All products · 23 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
2.25 Inch 4 Ohm 10 Watt Full Range Speaker with Neodymium Magnet
[Speakers] 2.25-Inch Speaker Driver • 4 Ohm Impedance • 10W Power Rating • Neodymium Magnet • Compact Full Range Audio Speaker The 2.25 Inch 4 Ohm 10 Watt Full Range Speaker with Neodymium Magnet is a compact and high-performance speaker driver designed for portable audio systems, DIY speaker projects, multimedia devices, embedded electronics, and custom sound enclosures. Featuring a powerful neodymium magnet, this speaker delivers clear vocals, balanced midrange, and improved bass response while maintaining a lightweight and compact design. With a 4 ohm impedance and 10 watt power rating, the speaker is suitable for use with small audio amplifiers, Bluetooth amplifier modules, DIY portable speakers, mini sound systems, toys, alarm systems, educational kits, and embedded electronic devices. The full-range design allows it to reproduce a wide spectrum of audio frequencies without requiring additional tweeters for many compact applications. Its durable construction and lightweight neodymium magnet assembly make it ideal for applications where both performance and space efficiency are important. ⭐ Features Compact 2.25-inch full range speaker Powerful neodymium magnet 4 ohm impedance 10 watt power rating Clear and balanced sound output Enhanced vocal clarity and midrange performance Lightweight and compact construction Easy to mount in custom enclosures Suitable for portable and embedded audio systems Ideal for DIY electronics and audio projects 📋 Technical Specifications Product Type: Full Range Speaker Driver Speaker Size: 2.25 Inch Impedance: 4 Ohm Power Rating: 10 Watt Magnet Type: Neodymium Speaker Type: Full Range Mounting Type: Enclosure / Panel Mount Application Type: Audio Output Frame Material: Metal Cone Material: Paper Composite Color: Black 🔧 Applications Suitable for: Portable Speaker Systems Bluetooth Speakers DIY Audio Projects Mini Sound Systems Multimedia Devices Toys and Educational Kits Alarm and Notification Systems Embedded Electronic Devices Mini Amplifiers Sound Modules Intercom Systems Custom Speaker Enclosures Robotics and Electronics Projects 📦 Package Includes 1 × 2.25 Inch 4 Ohm 10 Watt Full Range Speaker with Neodymium Magnet ⚠️ Precautions Do not exceed the 10W rated power. Use an amplifier compatible with 4 ohm speakers. Avoid exposure to moisture, water, and excessive dust. Mount the speaker securely to minimize unwanted vibration. Do not apply direct pressure to the speaker cone or surround.
3-in-1 Aluminum Heat Sink Set for Raspberry Pi 3
[Aluminium Heat Sink] ❄️ 3-in-1 Aluminum Heat Sink Set for Raspberry Pi 3 High-Quality Aluminum • Self-Adhesive Thermal Tape • Improved Cooling • Easy Installation The 3-in-1 Aluminum Heat Sink Set for Raspberry Pi 3 is a premium cooling accessory designed to improve heat dissipation and maintain stable operating temperatures for Raspberry Pi boards. Manufactured from high-quality aluminum, these heat sinks efficiently transfer heat away from critical components, helping improve performance and extend the life of your Raspberry Pi. The kit includes three aluminum heat sinks of different sizes to cool the processor, Ethernet/LAN controller, and other heat-generating ICs. Each heat sink comes pre-installed with a high-performance thermal adhesive backing, allowing quick and secure installation without the need for additional thermal paste or glue. By reducing operating temperatures, the heat sinks help prevent thermal throttling during continuous operation, making them ideal for overclocking, media centers, home servers, IoT applications, industrial automation, and embedded systems. ⭐ Features Premium-quality aluminum construction Excellent thermal conductivity Self-adhesive thermal tape for easy installation No thermal paste required Lightweight and durable Improves heat dissipation Reduces processor temperature Helps prevent thermal throttling Ideal for continuous operation and overclocking Designed specifically for Raspberry Pi boards Corrosion-resistant aluminum finish Easy peel-and-stick installation 📋 Technical Specifications Product Type: Aluminum Heat Sink Set Compatibility: Raspberry Pi 3 Model A, A+, B, B+ Material: Aluminum Color: Silver Quantity: 3 Heat Sinks Mounting Method: Self-Adhesive Thermal Tape Thermal Interface: Pre-applied Thermal Adhesive Cooling Type: Passive Cooling Weight: Lightweight Installation: Peel-and-Stick 🔧 Applications Suitable for: Raspberry Pi 3 Model B Raspberry Pi 3 Model B+ Raspberry Pi 3 Model A+ Raspberry Pi 3 Model A Raspberry Pi Media Center Home Automation Projects IoT Devices Embedded Systems Robotics Projects Industrial Controllers NAS Servers Retro Gaming Consoles AI Edge Computing Educational Projects DIY Electronics 📦 Package Includes 1 × Large Aluminum Heat Sink (CPU) 1 × Medium Aluminum Heat Sink (LAN/Ethernet Controller) 1 × Small Aluminum Heat Sink (Additional IC / Spare)
5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal
[Power Connector] 🔌 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male / Female) Standard DC Barrel Connector • 2-Pin Screw Terminal • Solder-Free Installation • Up to 5A Current Rating The 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal is a convenient and reliable connector designed for quick and secure DC power connections without soldering. Compatible with the industry-standard 5.5mm outer diameter and 2.1mm inner diameter barrel connector, it is widely used in CCTV camera installations, LED lighting, routers, power adapters, and DIY electronics projects. Available in Male and Female variants, this connector features a 2-pin screw terminal that allows wires to be connected easily using a screwdriver. The clearly marked positive (+) and negative (–) terminals help prevent wiring errors, making installation simple for both professionals and hobbyists. Manufactured with a durable ABS plastic housing and nickel-plated metal contacts, this connector provides reliable electrical performance, corrosion resistance, and long service life. Its reusable design makes it ideal for prototyping, repairs, and permanent installations. ⭐ Features Standard 5.5 × 2.1mm DC barrel connector Available in Male and Female versions 2-pin screw terminal for quick wire connection No soldering required Clearly marked positive (+) and negative (–) terminals Supports up to 5A current Durable ABS plastic housing Nickel-plated contacts for improved conductivity Secure and reusable connection Easy plug-and-play installation Suitable for 12V and 24V DC systems Ideal for DIY electronics and repair work 📋 Technical Specifications Product Type: DC Power Jack Plug with Screw Terminal Connector Type: Male / Female Barrel Size: 5.5mm (Outer) × 2.1mm (Inner) Terminal Type: 2-Pin Screw Terminal Rated Voltage: 0–30V DC Recommended Operating Voltage: 12V / 24V DC Maximum Current: Up to 5A Housing Material: ABS Plastic Contact Material: Nickel-Plated Metal Mounting Type: Inline Cable Mount Wire Compatibility: Up to 22 AWG Polarity Marking: Positive (+) / Negative (–) Operating Temperature: -20°C to +80°C 🔧 Applications Suitable for: CCTV Camera Power Connections LED Strip Lighting LED Sign Boards DC Power Adapters Routers and Modems Arduino Projects Raspberry Pi Projects DIY Electronics Battery Packs Power Distribution Systems Industrial Control Equipment Testing and Prototyping Electronic Repairs Low-Voltage DC Power Systems 📦 Package Includes 1 × 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male or Female variant as selected) ⚠️ Note Please select the required Male or Female connector variant before ordering. Verify polarity before connecting power to avoid damage to connected devices. Suitable for low-voltage DC applications only. Product appearance may vary slightly depending on the manufacturing batch.
3.7V BMS 1S 2A 18650 Lithium Battery Protection Board
[Lithium Battery Protection Board] The 1S 3.7V Lithium Battery Protection Board (BMS/PCM) is a compact battery management module designed specifically for single-cell lithium-ion batteries such as 18650, 14500, and similar 3.7V rechargeable cells. It continuously monitors battery voltage and current to ensure safe charging and discharging operations. In addition, the module provides multiple layers of protection including overcharge, over-discharge, overcurrent, and short-circuit protection. As a result, it helps extend battery life and improves the safety of battery-powered devices. Because of its compact size, the protection board can be easily integrated into DIY battery packs, portable electronics, LED lighting systems, and rechargeable battery projects. Furthermore, the board uses nickel-strip compatible terminals for easy battery pack assembly. The protection circuit is designed for long-term reliable operation and helps prevent damage caused by improper charging or excessive current draw. Moreover, it offers high voltage detection accuracy for improved battery management performance. ⚠️ Note: This protection board is designed for 3.7V Lithium-Ion batteries only and is not suitable for LiFePO4 batteries. 🔹 Key Features Single-cell (1S) lithium battery protection board Suitable for 18650 lithium-ion batteries Overcharge protection Over-discharge protection Overcurrent protection Short-circuit protection High voltage detection accuracy Compact and lightweight design Easy installation and integration Long operational life 🔹 Pin Configuration B+ : Battery Positive Terminal B- : Battery Negative Terminal P+ : Charge / Discharge Positive Terminal P- : Charge / Discharge Negative Terminal 🔹 Technical Specifications Product Type: Lithium Battery Protection Module (BMS/PCM) Battery Configuration: 1S (Single Cell) Compatible Battery Type: 3.7V Lithium-Ion (18650, 14500, etc.) Operating Voltage Range: 3.2V – 4.2V Overcharge Detection Voltage: 4.25 ± 0.05V Overcharge Release Voltage: 4.23 ± 0.05V Over-discharge Detection Voltage: 2.54 ± 0.1V Continuous Charge Current: 2A Continuous Discharge Current: 2A Maximum Supported Current: 2A – 5A Protection Functions: Overcharge, Over-discharge, Overcurrent, Short Circuit Terminal Type: Nickel Strip Compatible Board Life Expectancy: More than 20,000 Operating Hours 🔹 Applications This protection board is suitable for: 18650 battery packs Rechargeable lithium battery projects DIY power banks Portable electronics LED lighting systems Battery-powered devices Robotics projects Arduino and ESP32 power systems 🔹 Important Notes Not suitable for LiFePO4 batteries Not recommended for high-current motors above 4A Not suitable for electric bicycles or high-power battery packs Ensure correct polarity during installation Use only with compatible lithium-ion cells 🔹 Package Includes 1 × 1S 3.7V 2A Lithium-Ion Battery Protection Board (BMS/PCM)
5V 100mA 0.5W Mini Solar Panel 70x70mm Polycrystalline DIY Solar Cell Charger
[Solar Panel] The 5V 100mA 0.5W Mini Solar Panel is a compact and efficient photovoltaic module designed for small solar power applications and DIY renewable energy projects. Made using high-quality polycrystalline silicon, this solar panel converts sunlight into usable electrical energy with reliable performance. In addition, the panel delivers a stable 5V output with up to 100mA current, making it suitable for charging small batteries, powering low-power devices, and educational electronics projects. As a result, it is widely used in portable solar applications, science experiments, and DIY electronic systems. Because of its lightweight and compact design, the panel can be easily installed in limited spaces. Furthermore, the durable epoxy surface improves protection against moisture and environmental conditions, helping ensure long-term outdoor use. The solar panel features excellent low-light performance and high conversion efficiency for improved energy generation. Moreover, the exposed copper connection pads allow easy soldering and quick integration into custom electronic projects. This mini photovoltaic panel is commonly used in solar DIY kits, battery chargers, garden lighting, educational projects, portable electronics, and renewable energy systems. 🔹 Key Features High-efficiency polycrystalline solar panel Stable 5V output voltage Lightweight and compact design Excellent low-light performance Durable epoxy-coated surface Easy soldering connection pads Waterproof and long-lasting structure Suitable for DIY and educational projects 🔹 Technical Specifications Product Type: Mini Solar Panel Material: Polycrystalline Silicon Output Voltage: 5V Output Current: 0–100mA Rated Power: 0.5W Dimensions: 70mm × 70mm × 3mm Surface Type: Epoxy Coated Connection Type: Copper Tape Pads Application Type: Solar Charging / DIY Projects 🔹 Applications This mini solar panel is suitable for many applications, including: DIY solar projects Small battery charging Educational electronics kits Portable solar devices Garden lighting systems Renewable energy experiments Low-power electronics projects 🔹 Package Includes 1 × 5V 100mA 0.5W Mini Epoxy Solar Panel
10S 20A Lithium-ion BMS 18650 Battery Charging Board
[Lithium Battery Protection Board] Overview of this 10S 20A BMS 18650 Battery Charging Board Introducing 10S 20A BMS 18650 Battery Charging Board at best price in India. This 10S 20A BMS provides comprehensive protection and efficient management for 18650 lithium batteries. It offers critical safeguards against overcharging, over-discharging, and short circuits, ensuring battery safety and longevity. Ideal for high-power applications, this 10S BMS for 18650 lithium battery delivers reliable performance and durability. With its 20A current rating, the 20A BMS for 18650 lithium battery charger board supports demanding energy systems. The advanced circuitry ensures optimal charging and discharging, reducing heat and extending battery life. Its robust design and high-performance capabilities make it suitable for both professional and DIY projects. Upgrade your battery management with this efficient and dependable 10S 20A BMS 18650 Battery Charging Board. Features 20A High Current Support: Handles up to 20A continuous current, suitable for high-power applications. Ensures reliable energy delivery for demanding devices and systems. 10S Configuration: Designed for 10 series lithium-ion cells, providing balanced charging and discharging. Maintains cell balance for improved performance and battery lifespan. Advanced Protection Features: Includes protection against overcharge, overdischarge, short-circuits, and overcurrent. Enhances safety and prevents damage to the battery pack. Efficient Heat Management: Built with components that ensure effective heat dissipation during operation. Prevents overheating and maintains consistent performance under load. Compact and Durable Design: This 10S 20A BMS 18650 battery charging board fits easily into various battery setups and projects. Its durable built ensure reliability and long life in diverse condition. Specification No. Tested Item Criterion 1 Voltage Charging Voltage DC:42V CC/CV Blance Volatage for single cell 4.1V 2 Current Blance Current for single cell 40 ± 20 mA Current consumption <= 30µA Max continuous charging current 20A Max continuous discharging current 20A 3 Over Charge Protection Over charge detection voltage 4.25 ± 0.03V Over charge detection delay time <1000ms Over charge release voltage 4.15 ± 0.05V 4 Over discharge detection voltage Over Discharge Protection 2.7 ± 0.08V Over discharge detection delay time 1400ms Over discharge release voltage 3±0.08V 5 Over Current Protection Over current detection current (discharging) 20A±3A Release condition Cut load Over current detection delay time <1300ms 6 Short Circuit Protection Detection condition (120A) Exterior short circuit Release condition Cut short circuit Short circuit detection delay time 300us 7 Temperature Protection Temperature Protection Charging 50°C Discharging 70°C 8 Interior Resistance Main loop electrify resistance VC=4.2V,RDS≤60mΩ 9 Temperature Operating Temperature -45°C –+65°C Storage Temperature -45°C+85°C Package Includes: 1 X 10S 20A BMS 18650 Battery Charging Board
Rubber Passive Radiator Bass Vibration Plates
[Passive Radiator] The Oval Shape Passive Radiator Bass Diaphragm Rubber Speaker Plate is designed to enhance the low-frequency bass response of speaker systems without requiring additional power. Made from high-quality flexible rubber, this passive radiator works by using the air pressure generated inside the speaker enclosure to produce deep and powerful bass vibrations. Passive radiators act as an alternative to traditional bass reflex ports. Instead of allowing air to escape through a port, the radiator diaphragm vibrates in response to internal air pressure from the active driver, resulting in stronger bass performance, reduced distortion, and improved overall sound quality. These DIY speaker passive radiators are ideal for portable speakers, Bluetooth speakers, subwoofers, home audio systems, and custom speaker enclosures. Their lightweight yet durable construction ensures long-lasting operation and easy installation in a wide variety of audio projects. Available in sizes 4080, these passive radiators allow builders and audio enthusiasts to choose the right size for their speaker design and enclosure. Perfect for DIY speaker upgrades, custom audio builds, and professional speaker system enhancements, this rubber bass vibration plate delivers powerful bass performance without increasing power consumption. ⭐ Key Features Durable Rubber Construction for long-lasting use Enhances Bass Performance and low-frequency response Passive Operation – No Power Required Improves Sound Clarity and reduces distortion Lightweight and Compact Design Available in Sizes 4080 Ideal for DIY speaker projects and audio upgrades Easy to integrate into speaker enclosures 🔧 Technical Specifications Product Type: Passive Radiator / Bass Diaphragm Plate Shape: Oval Material: High-quality Rubber Function: Passive Bass Radiator Operation: Air-pressure driven vibration Available Sizes: 4080variants Installation Type: Speaker enclosure mounting Application: Audio speakers & subwoofer systems 🎯 Applications DIY speaker projects Portable Bluetooth speakers Home theater systems Subwoofer speaker boxes Custom speaker cabinets Audio system upgrades 📦 Package Includes 1 × Oval Shape Passive Radiator Bass Diaphragm Plate
Multitec 150B Wire Stripper and Cutter
[Cutter] This Multitec 150b Wire Stripper and Cutter is a High-grade alloy steel stripper/cutter ideal for professionals. The tool is suitable for the flush cutting action. The tool is mainly used to strip and cut the wire with a 12-24 gauge. The black oxide finish prevents corrosion. Based on the wire size, screws have to be adjusted. Features : An improved handle for extra comfort and grip. Sharp cutting edge. Suitable for industrial applications. H-8mm L-13cm W-80 gm. Fast cutting action with black oxide finish. Strips and cuts wire 12-24 gauge. Wire Gauge screw in slot holds stripping die to the proper size for repeated jobs and prevent nipped wire. Sharp cutting edges for all industrial uses. Package Includes : 1 x Multitec 150b Wire Stripper and Cutter
High power LED 20-100W lamp bead lens 44MM optical glass 90 degree led lens
[LED Lens] The 44mm High Power LED Lens Kit is designed for improving the light output and beam control of 20W to 100W integrated LED light sources. It includes a high-quality optical glass lens, reflective collimator, and metal fixing bracket for stable mounting. In addition, the lens provides a wide 90-degree light distribution, helping create uniform and efficient illumination. As a result, it is suitable for flood lighting, DIY LED lamps, spotlights, and industrial lighting systems. Because of its optical-grade glass construction, the lens delivers excellent light transmission and improved brightness. Furthermore, the included 50mm reflector helps focus and direct the LED beam more efficiently. The durable metal bracket ensures secure mounting and easy installation onto LED modules and heatsinks. Moreover, the compact design makes it suitable for custom lighting projects and high-power LED applications. This LED lens kit is widely used in flood lights, high-power LED lamps, DIY lighting systems, stage lighting, projection lighting, and industrial illumination projects. 🔹 Key Features Suitable for 20W to 100W high power LEDs High-quality optical glass lens Includes reflective collimator and fixing bracket Wide 90° beam angle design Efficient light focusing and distribution Durable metal reflector housing Easy installation and mounting Ideal for DIY and industrial lighting projects 🔹 Technical Specifications Product Type: High Power LED Lens Kit Lens Diameter: 44mm Reflector Diameter: 50mm Beam Angle: 60°–80° Lens Type: Optical Glass Lens Reflector Material: Metal Bracket Material: Metal Applicable LED Power: 20W–100W Light Angle: 90 Degrees Application Type: Integrated High Power LED Source 🔹 Applications This LED lens kit is suitable for many lighting applications, including: High power LED flood lights DIY LED lamps Spot lighting systems Stage lighting Industrial lighting Projection lighting projects Outdoor LED lighting systems 🔹 Package Includes 1 × 44mm Optical Glass Lens 1 × 50mm Reflector 1 × Metal Fixing Bracket
T Handle Connector for SB50 Anderson Connector – Grey
[Power Connector] T-Handle for SB50 Anderson Connector The T-Handle for SB50 Anderson Connector is a durable and convenient accessory designed to make connecting and disconnecting SB50-style 2-pole power connectors easier. Its ergonomic T-shaped design provides a firm grip and improved leverage, allowing the connector to be removed smoothly without pulling directly on the cables. ⭐ Key Features Designed for SB50 Anderson-style connectors Ergonomic T-shaped handle Provides a firm and comfortable grip Makes connector removal easier Helps reduce strain on connector cables Easy bolt-on installation Durable construction Suitable for frequent connector connection/disconnection 📋 Technical Specifications Product Type: Anderson Connector T-Handle Compatible Connector: SB50 Connector Type: 2-Pole Rated Current: Up to 50A for SB50 Handle Type: T-Shape Pull Handle Color: Grey Mounting: Bolt-On Application: Connector Insert & Pull 🔧 Applications Battery Packs Solar Power Systems Inverters UPS Systems Electric Vehicles Golf Carts Electric Scooters Trailers Caravan & RV Systems Automotive Power Connections DIY Battery Projects 📦 Package Includes 1 × T-Handle for SB50 Anderson Connector Mounting Bolts Nuts
3.2V BMS 1S 6A LFP 32650 4MOS Lithium Battery Protection Board
[Lithium Battery Protection Board] 🟦 3.2V BMS 1S 6A LFP 32650 4MOS Lithium Battery Protection Board Upgrade your LiFePO4 battery packs with the 3.2V 1S 6A BMS (Battery Management System) featuring a high-reliability 4-MOSFET protection circuit. Designed specifically for 32650 and 3.2V LFP single-cell lithium batteries, this protection board ensures long battery life, safe operation, and stable performance under various load conditions. The intelligent BMS module provides overcharge, over-discharge, overcurrent, and short-circuit protection, making it ideal for DIY battery packs, solar power systems, LED lighting, small motors, backup power, and custom electronics. With a compact, efficient, and durable design, this BMS offers excellent value for your LFP battery projects. ⭐ Key Features 1S LiFePO₄ Protection: Designed for 3.2V LFP batteries such as 32650/32700 single cells. 6A Continuous Discharge Current: Stable performance suitable for most medium-load devices. Advanced 4-MOS Protection: Ensures low resistance, high efficiency, and improved reliability. Full Safety Protection: Includes overcharge, over-discharge, overcurrent, and short-circuit protection. Compact & Easy to Use: Simple wiring makes it ideal for DIY power packs and electronics projects. High Durability: Built with premium components for long life and consistent performance. 🔧 Technical Specifications Type: 1S LiFePO4 Battery Protection Board Battery Type: 3.2V LiFePO₄ (LFP) Single Cell Continuous Discharge Current: 6A Protection Circuit: 4 MOSFET Overcharge Protection Voltage: ~3.60V (typical) Over-Discharge Protection Voltage: ~2.0–2.2V Overcurrent Protection: Yes Short-Circuit Protection: Yes Balancing: No (Standard 1S BMS) Application: 32650/32700 cell packs, DIY LFP projects, solar backup systems, LED drivers, portable devices 🎯 Best Uses 3.2V LFP battery packs 32650/32700 cell protection Solar energy storage Portable electronics & DIY projects LED lights & emergency lamps Robotics & embedded systems Power banks & backup supplies Wiring instructions: 3.2V and 3.7V wiring methods are consistent; B+ is connected to the positive terminal of the battery. B- Connected to the negative pole of the battery. P+ is the positive input of the battery pack input P- is the negative input of battery pack output Specification: 3.2V lithium iron phosphate battery protection board 4MOS: Overcharge detection voltage: 3.75±0.05V Overcharge release voltage: 3.75±0.05V Overdischarge detection voltage: 2.1V±0.1V Upper limit continuous current: 6A Overcurrent detection current: 7A Charging voltage: 3.6V Product size: ~35 * ~8 * ~2.2MM Package Include: 1 x 3.2V BMS 1S 6A LFP 32650 4MOS Lithium Battery Protection Board.
130mm PVC Heat Shrink Sleeve Blue for Lithium Cell Battery Pack (In Meters)
[Sleeves] 130mm Blue PVC Heat Shrinkable Lay Flat Tube for Battery Pack The 130mm Blue PVC Heat Shrinkable Lay Flat Tube is designed for safely covering and insulating DIY battery packs, lithium-ion battery packs, LiFePO₄ battery packs, and other electronic assemblies. Heat shrink tubing provides an additional protective layer around the battery pack, helping prevent accidental short circuits, abrasion, dust, and moisture exposure while giving the finished battery pack a clean and professional appearance. The lay-flat construction makes the sleeve easy to cut and position around battery packs of different shapes and sizes. When heated using a suitable heat gun, the PVC material contracts around the battery pack to provide a snug and secure covering. For improved durability, multiple layers can be used on battery packs with sharp corners or edges. A thin foam layer may also be placed around the battery pack before shrinking to help reduce stress and cracking over time. ⭐ Key Features 130mm lay-flat PVC heat shrink sleeve Blue color Designed for battery pack covering and insulation Helps protect against accidental short circuits Provides a clean and professional battery pack finish Flexible and easy to cut Heat-shrinkable PVC construction Suitable for single or multiple-layer applications Ideal for DIY battery pack assembly 📋 Technical Specifications Product Type: PVC Heat Shrinkable Lay Flat Tube Width: 130mm Color: Blue Material: Poly Vinyl Chloride (PVC) Shrinkage: Approx. 9%–21%, depending on size Tensile Strength: ≥4000 Pa/m² Form: Lay Flat Tube / Sleeve Application: Battery Pack Covering & Insulation 🔧 Applications 18650 Battery Packs 21700 Battery Packs Lithium-Ion Battery Packs LiFePO₄ Battery Packs DIY Battery Packs Electric Bicycle Batteries Electric Scooter Batteries Power Bank Assembly Portable Power Stations Battery Module Insulation Electronic Assembly Protection ⚠️ Usage Precautions Use a suitable heat gun for shrinking. Apply heat evenly around the sleeve to avoid overheating. Do not apply excessive heat directly to lithium battery cells. Ensure the battery pack is properly insulated before shrinking. Measure the battery pack before selecting the sleeve size. 📦 Package Includes 1 × 130mm Blue PVC Heat Shrinkable Lay Flat Tube for Battery Pack
Out of stockIRF740 MOSFET – 400V 10A N-Channel Power MOSFET TO-220
[Mosfet] IRF740 MOSFET – N-Channel Transistor IRF740 is type of N-Channel enhancement mode power field effect transistors which are using planar, DMOS technology. This advanced technology has been especially tailored to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse in the avalanche and commutation mode. These devices are well suited for high efficiency switch mode power supplies and electronic lamp ballasts based on half bridge.. Specifications Drain-Source Volt (Vds): 400V Drain-Gate Volt (Vdg): 400V Gate-Source Volt (Vgs): 20V Drain Current (Id): 10A Power Dissipation (Ptot): 125W Type: N-Channel Features Low gate charge Low Crss (typical 35 pF) Fast switching 100% avalanche tested Improved dv/dt capability Lead-Free, RoHS Compliant
3 Pin Super Deluxe IEC Computer Power Cable 1.75 Meter for PC, SMPS, Printer & Monitor (Black)
[Power Cord] The 3 Pin Super Deluxe IEC Computer Power Cable is a durable and reliable power cord designed for electronic devices such as desktop computers, monitors, printers, UPS systems, and SMPS power supplies. It provides stable power transmission and secure connectivity for everyday use. This cable features a standard IEC C13 connector, which is commonly used in computers and office equipment. In addition, the strong outer insulation improves flexibility and protects the cable from daily wear and bending. Because of its high-quality copper conductor and sturdy build, the cable delivers reliable performance for both home and office setups. Furthermore, the 1.75-meter length offers convenient reach and better cable management. The plug-and-play design makes installation simple and quick without requiring any additional tools. 🔹 Key Features Standard 3 Pin IEC power cable Compatible with PCs, monitors, printers, and SMPS Durable and flexible cable design Stable and secure power connection Extended 1.75-meter cable length Plug-and-play operation High-quality insulation for improved safety 🔹 Technical Specifications Parameter Specification Connector Type IEC C13 Input Plug 3 Pin AC Plug Cable Length 1.75 Meter Color Black Cable Type Computer Power Cable Application PC / Printer / Monitor / SMPS 🔹 Applications Desktop computers SMPS power supplies LED monitors Printers UPS systems Office electronics 🔹 Package Includes 1 × 3 Pin IEC Computer Power Cable (1.75 Meter)
Small Aluminium Heat Sink for TO-220 Package
[Aluminium Heat Sink] Small Aluminium Heat Sink for TO-220 Package The Small Aluminium Heat Sink for TO-220 Package is a compact passive cooling component designed for TO-220 package transistors, voltage regulators, MOSFETs, and other low-power semiconductor devices. It helps transfer heat away from the electronic component and dissipate it into the surrounding air, helping maintain a safer operating temperature. A matching product listing confirms that this heatsink is intended for low-power dissipation and includes a mounting hole for securing a transistor or voltage regulator. Its compact size makes it particularly useful where PCB space is limited. The heatsink is made from aluminium and has a 1mm material thickness, with overall dimensions of 15 × 9 × 19mm. ⭐ Key Features Designed for TO-220 package components Made from aluminium Compact and lightweight construction Suitable for low-power heat dissipation Helps reduce semiconductor operating temperature Mounting hole for securing compatible components Suitable for transistors, voltage regulators and similar devices Easy to install on electronic components Ideal for PCB and DIY electronics projects 📋 Technical Specifications Product Type: Aluminium Heat Sink Application: TO-220 Package Material: Aluminium Length: 15mm Width: 9mm Height: 19mm Thickness: 1mm Dimensions: 15 × 9 × 19mm Weight: Approximately 1g Mounting: Screw Mount Heat Dissipation: Passive / Natural Convection Application Type: Low-Power Semiconductor Cooling The dimensions and approximately 1g weight are listed by the corresponding product listing. 🔧 Applications TO-220 Transistors Voltage Regulators MOSFETs Power Transistors Linear Regulators Small Power Supply Circuits Arduino Projects DIY Electronics PCB Projects Embedded Electronics General Semiconductor Cooling 🛠️ Installation Place the heatsink against the heat-producing surface of the compatible TO-220 component and secure it through the mounting hole using an appropriate screw and nut. For improved thermal transfer, a suitable thermal interface material or thermal compound can be used between the component and heatsink where appropriate. Ensure that the heatsink does not accidentally create an electrical short between component terminals or other PCB traces. 📦 Package Includes 1 × Small Aluminium Heat Sink for TO-220 Package ⚠️ Precautions Use only with components that are mechanically compatible with the heatsink. Ensure the heatsink is securely mounted. Check for possible electrical contact between the heatsink and component terminals. Use thermal compound or an appropriate thermal interface where required. This is intended for low-power heat dissipation; higher-power applications may require a larger heatsink or forced-air cooling.
10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module XL4016
[Step Down Buck Converter] 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module XL4016 The 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module is a high-power adjustable buck converter designed for applications requiring regulated output voltage and controlled output current. It can be used as a high-power LED driver, battery charging module, regulated power supply, and vehicle power supply. The module features independent CV (Constant Voltage) and CC (Constant Current) adjustment using onboard 3296 multi-turn potentiometers, allowing precise adjustment of the output voltage and current. A dual heatsink design helps dissipate heat from the power components during high-power operation. With a maximum advertised power rating of up to 300W, the module is suitable for high-power applications when adequate cooling and an appropriate input supply are provided. For continuous high-current operation, additional forced-air cooling is recommended. ⭐ Key Features Up to 300W output power 10A maximum output current Adjustable constant voltage and constant current CV and CC independent adjustment Output voltage continuously adjustable Typical output voltage range: 1.25V–35V High-power DC-DC step-down/buck converter Dual heatsink design for improved heat dissipation Independent heatsink for MOSFET/Schottky diode section 3296 multi-turn potentiometers for precise adjustment High-frequency capacitors for reduced output ripple Large Sendust core Double pure-copper winding Suitable for LED driver and battery charging applications Additional cooling recommended for continuous high-power operation 📋 Technical Specifications Product Type: DC-DC Step-Down Buck Converter Function: Constant Voltage / Constant Current Maximum Output Power: Up to 300W Maximum Output Current: 10A Recommended Continuous Current: Up to approximately 8A with additional cooling Output Voltage: Continuously adjustable, approximately 1.25V–35V Minimum Voltage Difference: Approximately 1V Adjustment: CV / CC Multi-Turn Potentiometers Potentiometer Type: 3296 Multi-Turn Operating Temperature: -40°C to +85°C Output Ripple: Approximately 50mV under the stated test conditions Cooling: Dual Heatsink Additional Cooling: Cooling fan recommended for continuous high-power operation Converter Type: Step-Down / Buck 🔧 Applications High-Power LED Driver Constant Current LED Power Supply Lithium Battery Charging Lead-Acid Battery Charging Ni-Cd / Ni-MH Battery Charging 6V Battery Charging 12V Battery Charging 14V Battery Charging 24V Battery Charging Solar Panel Power Systems Wind Generator Applications Vehicle-Mounted Power Supply Laptop Power Supply Regulated DC Power Supply Low-Voltage Power Supply Systems 🎛️ CV & CC Adjustment The module has two independent multi-turn adjustment potentiometers: CV (Constant Voltage): Adjusts the required output voltage. CC (Constant Current): Adjusts the maximum/constant output current. Turn the potentiometers clockwise to increase and anticlockwise to decrease the corresponding setting. Use a reliable multimeter while adjusting the output voltage and current. 🔋 Battery Charger Application Determine the required battery charging voltage and charging current. Connect a suitable DC input supply to the module while observing correct polarity. Use the CV adjustment to set the required charging voltage. Use the CC adjustment to set the required charging current. Connect the battery to the output while observing correct polarity. Monitor the charging process and ensure the voltage and current remain within the battery manufacturer's specifications. 💡 Constant Current LED Driver Application Determine the LED's required operating current and maximum operating voltage. Adjust the output voltage to a low safe level before connecting the LED. Use the CC adjustment to set the required LED current. Adjust the CV setting according to the LED's required operating voltage. Connect the LED and verify the output voltage and current with a multimeter. 🛠️ Adjustment Instructions If the output voltage initially follows the input voltage and cannot be adjusted, turn the appropriate potentiometer counterclockwise for multiple turns and then adjust again. Turn the adjustment potentiometers clockwise to increase and anticlockwise to decrease. Always use a multimeter when setting voltage or current. The potentiometer closest to the output side is specified for CC/current adjustment. The potentiometer closest to the input side is specified for CV/voltage adjustment. 📦 Package Includes 1 × 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module ⚠️ Precautions This is a step-down (buck) converter; the input voltage must be higher than the required output voltage. Do not exceed the module's maximum voltage, current, or power limits. 300W is the maximum advertised power rating; actual continuous power depends on input voltage, output voltage, current, efficiency, and cooling. For continuous high-current operation, use a cooling fan with the heatsink. Do not short-circuit the output. Observe correct input and output polarity. Use appropriate protection when charging batteries. Never leave a battery charging unattended. Ensure the module's heatsink does not become excessively hot during operation.
XT60 Male Female Bullet Connector Plug For Lipo Battery RC Drone FPV Racing Multi Rotor
[Power Connector] Product Description The XT60 Connector (Male & Female Pair) is a high-quality, reliable power connector designed for high-current applications up to 60A. Widely used in RC models, drones, battery packs, and power systems, this connector ensures secure and efficient power transfer. Built with gold-plated copper contacts, the XT60 provides low resistance, minimal heat generation, and excellent conductivity, making it ideal for demanding electrical applications. The polarized design prevents reverse connections, ensuring safe and error-free usage. Its durable high-temperature nylon housing and precision-engineered fit guarantee strong, stable connections even under heavy loads and vibrations. ⚡ Key Features 🔌 High Current Capacity (60A)Handles continuous high current with excellent performance. 🛡️ Polarized Design for SafetyPrevents incorrect connections and ensures proper polarity. 🔥 Gold-Plated ContactsProvides low resistance, high conductivity, and reduced heat. 🧩 Strong & Secure FitPrecision mold design ensures tight, gap-free connections. 💧 Improved Solder ProtectionRear concave design allows deeper heat shrink placement for better insulation. ⚙️ Durable High-Temperature HousingWithstands temperatures from -20°C to 120°C. 🔧 Easy to Solder & UseWide terminals and 180° tail design make wiring simple. 📊 Specifications Specification Description Connector Type XT60 (Male + Female) Current Rating 60A (Up to 80A continuous possible) Peak Current Up to 120A Voltage Rating DC 1000V Material Gold-Plated Copper Housing Material High-Temp Nylon Plastic Temperature Range -20°C to 120°C Design Polarized, Anti-slip 🔧 Applications 🚁 RC Drones & Aircraft🚗 RC Cars & Robotics🔋 Lithium Battery Packs (Li-ion / LiPo)🔌 Power Distribution Systems⚡ Battery Chargers & Controllers🧪 DIY Electronics Projects 📦 Package Includes 1 × XT60 Male Connector1 × XT60 Female Connector
Out of stockESP-12F ESP8266 Wifi Wireless IoT Board Module
[ESP Modules] The ESP-12F ESP8266 WiFi Module is a powerful and low-cost WiFi transceiver module designed for Internet of Things (IoT) applications. Built around the ESP8266 SoC, this module integrates a full TCP/IP protocol stack, enabling microcontrollers to connect directly to WiFi networks. With its integrated 32-bit RISC processor, on-chip memory, and multiple communication interfaces, the ESP-12F module can either host an application independently or act as a WiFi adapter for another microcontroller such as Arduino, Raspberry Pi, or STM32. Each module is typically shipped with AT command firmware, allowing easy communication through UART serial interface. This means developers can quickly add WiFi functionality to existing hardware without complex programming. The ESP-12F version improves performance compared to earlier modules by offering: Stronger WiFi signal output Improved anti-interference capability Optimized PCB antenna design Better impedance matching The module supports station mode, soft-AP mode, and combined AP + station mode, making it highly versatile for IoT networking. Because of its high integration, small size, and low power consumption, the ESP-12F module is widely used in: IoT devices Home automation systems Smart appliances Wireless sensor networks Industrial monitoring systems ⭐ Key Features Based on ESP8266 SoC Built-in TCP/IP protocol stack Integrated 2.4GHz WiFi Supports Station / SoftAP / Station + AP modes Pre-programmed AT command firmware Compact SMD design Strong PCB antenna Low power consumption Multiple communication interfaces 🔧 Technical Specifications Model: ESP-12F Chipset: ESP8266 WiFi Standard: IEEE 802.11 b/g/n Frequency: 2.4 GHz Operating Voltage: 3.3V Maximum Current: ~240mA Standby Power: < 1mW Interface: UART / SPI / SDIO Baud Rate: 115200 (default) Communication Format: 8N1 Security: WPA / WPA2 Package Type: 32-Pin QFN Output Power: +19.5 dBm 📡 Supported Interfaces UART SPI SDIO 1.1 / 2.0 I2S (audio interface) Multiple GPIO pins 🎯 Applications IoT projects Smart home automation Wireless sensor networks Arduino WiFi connectivity Remote monitoring systems Industrial IoT applications 📦 Package Includes 1 × ESP-12F ESP8266 WiFi Module
Out of stockLM741 Operational amplifier IC
[Semiconductor ICs] DESCRIPTION:- This IC 741 is 8 pins Operational Amplifier. The LM741 series are general-purpose operational amplifiers which feature improved performance over industry standards like the LM709. They are direct, plug-in replacements for the 709C, LM201, MC1439, and 748 in most applications. LM741 Pin Configuration:- Pin Number Pin Name Description 1, 5 OFFSET NULL Pin used to remove the offset voltage and balance input voltage. 2 INPUT- Inverting signal Input 3 INPUT+ Non-Inverting signal Input 4 V- Ground or Negative Supply Voltage 6 OUTPUT The output of op amp 7 V+ Positive Supply Voltage 8 NC Not connected LM741 Op-Amp IC Features and Specifications:- LM741 has only one op-amp inside, there are some op-amp IC’s having more than one op-amp like LM358, LM148, LM248, LM348 Provided with short circuit and overload protection. Low power consumption. Large common mode rejection ratio (CMRR) and differential voltage ranges. No external frequency compensation is required. Prevent from latch-up when the common-mode range is exceeded. Minimum, normal and maximum Power Consumption for this IC is ±10v, ±15v and ±22v respectively. Operating temperature should be -50 to 125 ˚C. Supply current – 1.7 to 2.8mA. Soldering pin temperature – PDIP package – 260 ˚C (for 10 seconds – prescribed) TO-99 and CDIP – 300 ˚C (for 10 seconds – prescribed) Available packages: TO-99, CDIP & PDIP Brief Description:- An LM741 operational amplifier is a DC-coupled high gain electronic voltage amplifier. It has only one op-amp inside. An operational amplifier IC is used as a comparator which compares the two signal, the inverting and non-inverting signal. The main function of this IC is to do the mathematical operation in various circuits. Op-amps have large gain and usually used as Voltage Amplifier. The LM741 can operate with a single or dual power supply voltage. Package Includes :- 1 x LM 741 Oerational Amplifire IC
Out of stockIC 74HC32 Quad 2-Input/Gate Dip
[Logic Gates IC] The ACT32 is an advanced high-speed CMOS QUAD 2-INPUT OR GATE fabricated with sub-micron silicon gate and double-layer metal wiring C2 MOS technology. It is ideal for low power applications maintaining high-speed operation similar to equivalent Bipolar Schottky TTL. The internal circuit is composed of 2 stages including buffer output, which enables high noise immunity and stable output. The device is designed to interface directly with High-Speed CMOS systems with TTL, NMOS, and CMOS output voltage levels. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. Features: HIGH SPEED: tPD = 4.5 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA = 25 C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN), VIL = 0.8V (MAX) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH|=IOL =24 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 32 IMPROVED LATCH-UP IMMUNITY Package Includes: 1 x 74ACT32 Dip IC Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stockATmel MCU ATMEGA16U2 MEGA 2560 R3 Improved Version CH340G Board
[Arduino Boards] The ATmel MCU ATMEGA16U2 MEGA 2560 R3 Improved Version CH340G Board is a micro-controller board base on the ATmega2560. It has a USB host interface to connect with Android based phones, base on the MAX3421e IC. It has 54 digital input/output pins (of which 15 can be used as PWM outputs); 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator; a USB connection, a power jack, an ICSP header, and a reset button. The MEGA ADK is base on the Mega 2560. Similar to the Mega 2560 and Uno, it features an ATmega8U2 program as a USB-to-serial converter. Revision 3 of the Mega ADK board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU(Device Firmware Upgrade) mode. The board has the following new features: 1.0 pin-out: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In the future, shields will be compatible both with the board that uses the AVR, which operate with 5V and with the Arduino Due which operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes. Stronger RESET circuit. The Mega Arduino R3 Android Accessory Development Kit (ADK) can be powered via a USB connection or with an external power supply. The power source is selected automatically. External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm centre-positive plug into the board’s power jack. Leads from a battery can be inserted in the GND and Vin pin headers of the POWER connector. Because the Mega R3 Android Accessory Development Kit (ADK) is a USB Host, the phone will attempt to draw power from it when it needs to charge. When the ADK is powered over USB, 500mA total is available for the phone and board. Package Includes : 1 x Mega R3 Android Accessory Development Kit (ADK) board.
Out of stock32650/32700 3.2V Rechargeable 6000mAh LifePO4 Battery Cell for Solar
[LiFePO4 Battery Cell] The 32700 / 32650 3.2V 6000mAh LiFePO4 Battery Cell is a high-performance rechargeable lithium iron phosphate (LFP) battery designed for applications requiring stable voltage, long cycle life, and high current capability. With a massive 6000mAh capacity, this cylindrical battery provides reliable and long-lasting power for solar systems, RC transmitters, DIY battery packs, portable devices, backup systems, and industrial applications. LiFePO4 chemistry offers superior safety, thermal stability, and longer cycle life compared to traditional lithium-ion batteries. Datasheet: Click here 🔹 Key Features Nominal Voltage: 3.2V High Capacity: 6000mAh Lithium Iron Phosphate (LiFePO4 / LFP) chemistry Long cycle life (2000+ cycles typical) High thermal stability & improved safety Low self-discharge rate Flat-top design Suitable for high-drain applications 🔹 Technical Specifications Battery Type: LiFePO4 (Lithium Iron Phosphate) Model Size: 32700 / 32650 Nominal Voltage: 3.2V Fully Charged Voltage: 3.6V – 3.65V ⚠ (Not 4.2V) Capacity: 6000mAh Discharge Cutoff Voltage: 2.5V Cycle Life: 2000+ cycles Shape: Cylindrical Terminal Type: Flat Top Chemistry: LFP 🔹 Applications Solar energy storage 4S 12.8V LiFePO4 battery packs RC transmitters / receivers Electric vehicles & scooters DIY power banks Backup power systems Portable electronics Industrial battery packs 🔹 Package Includes 1 × 32700 or 32650 3.2V 6000mAh LiFePO4 Battery Cell ⚠ Color and print may vary by batch. ⚠ IMPORTANT SAFETY INSTRUCTIONS Never discharge below 2.5V under load. Charge only to 3.65V maximum. Use LiFePO4 compatible charger only (3.6V/3.65V CC-CV type). Do not short-circuit terminals. Do not mix old and new cells. Do not expose to heat or fire. Store at approx 3.2V–3.3V (storage voltage) in cool dry place. Charge immediately after deep discharge. Never charge unattended. ⚠ Do NOT charge to 4.2V — this is for Li-ion cells, NOT LiFePO4.
150W DC-DC Boost Converter 10-32V to 12-35V 6A Adjustable Step-Up Power Supply Module
[Step UP Buck Converter] The 150W DC-DC Step-Up Boost Converter Module is a high-efficiency adjustable voltage regulator designed to increase input voltage to a higher output voltage. It accepts an input range of 10V to 32V DC and boosts it to an adjustable output between 12V and 35V DC. This module supports up to 150W maximum power output with a peak current of 6A, making it suitable for powering high-power electronics and DIY projects. The board includes a large heatsink for improved thermal performance, ensuring stable operation even under higher loads. Additionally, the onboard multi-turn potentiometer allows precise voltage adjustment, making it suitable for laboratory power supplies and custom electronics. Because of its high efficiency and compact design, this boost converter is widely used in battery-powered devices, solar systems, LED drivers, automotive electronics, and DIY power supply projects. 🔹 Key Features High-power 150W DC-DC boost converter Wide input voltage range 10V–32V Adjustable output voltage 12V–35V Maximum output current 6A High efficiency conversion up to 94% Large aluminum heatsink for better cooling Multi-turn potentiometer for precise voltage adjustment Compact and easy to install 🔹 Technical Specifications Parameter Specification Module Type DC-DC Step-Up Boost Converter Maximum Power 150W Input Voltage 10V – 32V DC Output Voltage 12V – 35V DC Adjustable Maximum Output Current 6A Conversion Efficiency Up to 94% Cooling Aluminum heatsink Adjustment Multi-turn potentiometer 🔹 Applications This boost converter module is suitable for many electronic systems including: DIY adjustable power supplies Solar power systems LED drivers Battery charging systems Automotive electronics Robotics projects Electronics testing equipment 🔹 Package Includes 1 × 150W DC-DC Step-Up Boost Converter Module