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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Soldering Helping Hand
Adjustable crocodile clamps, soldering iron holder, LED light, magnifying lens.
Out of stockHelping Hands Magnifier Stand
Heavy-cast iron base, dual alligator clips, 2.5x glass magnifier + LED light.
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)
Electric Kettle Thermostat Switch T125 16A 250V Automatic Thermal Cut-Off Switch White
[Mechanical Switches] The Electric Kettle Thermostat Switch T125 is a high-quality temperature control switch used in electric kettles and various heating appliances. It incorporates a precision bimetal thermostat that senses temperature and automatically disconnects the heating element once the desired temperature is reached, helping prevent overheating and dry-boil conditions. Manufactured with heat-resistant engineering plastic and durable silver alloy contacts, the thermostat offers stable switching performance, excellent electrical reliability, and a long mechanical life. The white housing provides excellent heat resistance, electrical insulation, and durability for continuous use in household appliances. With a 16A current rating and 250V AC operating voltage, the thermostat is suitable for most standard electric kettles, hot water dispensers, electric boilers, and similar heating equipment. Its compact design allows quick installation and easy replacement of worn or damaged thermostat switches. 🔹 Key Features Automatic temperature control Built-in overheat protection Dry-boil safety protection Precision bimetal thermostat Rated for 16A current Heat-resistant white housing Silver alloy electrical contacts Stable and reliable switching performance Long electrical and mechanical life Easy installation and replacement 🔹 Technical Specifications Product Type: Electric Kettle Thermostat Switch Model: T125 Rated Voltage: 250V AC Rated Current: 16A Temperature Rating: T125 Switching Type: Automatic Thermal Cut-Off Contact Type: Normally Closed (NC) Reset Type: Automatic (Application Dependent) Mounting Type: Screw Mount Terminal Type: Quick Connect Terminals Housing Material: Heat-Resistant Engineering Plastic Housing Color: White Contact Material: Silver Alloy Operating Frequency: 50/60Hz Operating Temperature: Up to 125°C Ambient Rating 🔹 Applications Suitable for: Electric kettles Electric water boilers Tea makers Coffee makers Hot water dispensers Steam appliances Water heating equipment Household appliances Appliance repair and replacement 🔹 Package Includes 1 × Electric Kettle Thermostat Switch T125 16A White
Electric Kettle Thermostat Switch T125 16A 250V Automatic Thermal Cut-Off Switch Black
[Mechanical Switches] The Electric Kettle Thermostat Switch T125 is a high-quality temperature control switch used in electric kettles and various heating appliances. It incorporates a precision bimetal thermostat that senses temperature and automatically disconnects the heating element once the desired temperature is reached, helping prevent overheating and dry-boil conditions. Manufactured with heat-resistant engineering plastic and durable silver alloy contacts, the thermostat offers stable switching performance, excellent electrical reliability, and a long mechanical life. The black housing provides excellent heat resistance and durability for continuous use in household appliances. With a 16A current rating and 250V AC operating voltage, the thermostat is suitable for most standard electric kettles, hot water dispensers, electric boilers, and similar heating equipment. Its compact design allows quick installation and easy replacement of worn or damaged thermostat switches. 🔹 Key Features Automatic temperature control Built-in overheat protection Dry-boil safety protection High-quality bimetal thermostat Rated for 16A current Heat-resistant black housing Silver alloy electrical contacts Stable and reliable switching Long electrical and mechanical life Easy installation and replacement 🔹 Technical Specifications Product Type: Electric Kettle Thermostat Switch Model: T125 Rated Voltage: 250V AC Rated Current: 16A Temperature Rating: T125 Switching Type: Automatic Thermal Cut-Off Contact Type: Normally Closed (NC) Reset Type: Automatic (Application Dependent) Mounting Type: Screw Mount Terminal Type: Quick Connect Terminals Housing Material: Heat-Resistant Plastic Housing Color: Black Contact Material: Silver Alloy Operating Frequency: 50/60Hz Operating Temperature: Up to 125°C Ambient Rating 🔹 Applications Suitable for: Electric kettles Electric water boilers Tea makers Coffee makers Hot water dispensers Steam appliances Water heating equipment Household appliances Appliance repair and replacement 🔹 Package Includes 1 × Electric Kettle Thermostat Switch T125 16A Black
10-in-1 USB & Type-C Digital Tester – IPS Voltmeter, Ammeter, Impedance & Capacity Meter
[Ammeter and Voltmeter] The 10-in-1 USB & Type-C Digital Power Tester is a multifunction USB measurement instrument developed for engineers, technicians, hobbyists, and electronics enthusiasts. It accurately monitors USB charging performance while providing comprehensive electrical measurements for USB-A and USB Type-C devices. Equipped with a bright IPS true-color LCD display, the tester simultaneously displays ten important charging parameters including Voltage, Current, Power, Capacity (mAh), Energy (mWh), Cable Resistance, Temperature, Charging Time, D+ Voltage, and D− Voltage. The tester features both USB-A and USB Type-C input/output interfaces, allowing compatibility with traditional USB chargers as well as modern USB-C Power Delivery devices. It supports testing of fast chargers, mobile phones, tablets, laptops, power banks, USB cables, and various USB-powered electronics. With support for measurements up to 150W and 5A, this tester is suitable for high-power USB-C PD chargers while consuming less than 20mA of operating current. Built-in control buttons allow users to switch display modes, perform fast-charge diagnostics, and manage measurement functions easily. Its compact design makes it an excellent tool for electronics repair, charger verification, cable testing, battery capacity measurement, laboratory work, and DIY electronics projects. 🔹 Key Features Dual Interface: USB-A & USB Type-C Input/Output Supports USB PD and Fast Charging IPS Full Color LCD Display Measures Voltage, Current and Power Capacity (mAh) & Energy (mWh) Measurement Cable Resistance (Impedance) Measurement Internal Temperature Monitoring USB D+ / D− Voltage Detection Charging Timer Function High Accuracy Measurement Low Self Power Consumption Compact Portable Design Easy Operation with Dedicated Function Buttons 🔹 Technical Specifications Product Type: USB Digital Power Tester Display: IPS True Color LCD Input Interface: USB-A / USB Type-C Output Interface: USB-A / USB Type-C Maximum Power Measurement: 150W Maximum Current: 5A Voltage Measurement: USB Standard & USB-C PD Power Measurement Range: 0–150W Current Measurement: Up to 5A Capacity Measurement: mAh Energy Measurement: mWh Impedance Measurement Range: 1–999.9Ω Temperature Measurement: 0°C to 80°C USB D+ Voltage Range: 0–2.99V USB D− Voltage Range: 0–2.99V Timer Range: 999 Hours 59 Minutes Refresh Rate: Approximately 500ms Self Power Consumption: <20mA Operating Buttons: Mode / Power Dimensions: 76.9 × 38 × 11 mm 🔹 Applications This USB tester is suitable for: USB charger testing USB-C PD charger testing Power bank capacity testing Mobile charger verification Fast charging protocol diagnostics USB cable resistance testing Laptop USB-C charger testing Electronics repair DIY electronics projects Laboratory measurements Battery charging analysis Quality inspection of USB power supplies 🔹 Package Includes 1 × 10-in-1 USB & Type-C Digital Power Tester 🔹 Frequently Asked Questions (FAQ) What does "10-in-1" mean? It measures ten important parameters: Voltage, Current, Power, Capacity, Energy, Impedance, Temperature, Charging Time, D+ Voltage, and D− Voltage. Does it support both USB-A and USB Type-C? Yes. It features both USB-A and USB Type-C input and output interfaces. What is the maximum power it can measure? Up to 150W. What is the maximum current supported? Up to 5A. Can it test USB-C laptop chargers? Yes. It supports high-power USB-C PD chargers up to 150W. Can it measure charging cable quality? Yes. It measures cable impedance from 1Ω to 999.9Ω. Does it display temperature? Yes. It includes an internal temperature sensor with a range of 0°C to 80°C. Does it require batteries? No. It is powered directly from the connected USB source. Can it measure power bank capacity? Yes. It records charging capacity in mAh and mWh. Does it support fast charging protocols? Yes. It can monitor USB D+ and D− voltages, helping identify fast charging protocol handshakes.
AC-DC 100-220V to 12V 1.3A 15.6W SMPS Power Supply Module Switching Power Board
[SMPS] The AC-DC 100-220V to 12V 1.3A 15.6W SMPS Power Supply Module is a compact switching power supply designed to provide a stable and regulated 12V DC output from standard AC mains input. With high conversion efficiency and built-in protection features, it is suitable for a wide range of electronic and industrial applications. In addition, the module accepts a broad 100V to 220V AC input range, making it compatible with various power systems. As a result, it can be used in DIY electronics, automation systems, LED lighting projects, CCTV installations, and embedded devices. Because of its efficient SMPS design, the module offers low power loss and reduced heat generation. Furthermore, the compact PCB layout allows easy integration into projects where space is limited. The power supply includes protection against overcurrent and short circuits, helping improve operational safety and reliability. Moreover, the regulated 12V output ensures stable performance for connected devices and electronic circuits. This power module is widely used in LED strips, surveillance systems, smart home devices, industrial control systems, communication equipment, and DIY electronics projects. 🔹 Key Features Wide AC input voltage range Stable regulated 12V DC output Maximum output current of 1.3A High-efficiency switching power supply design Compact and lightweight module Built-in overcurrent protection Built-in short-circuit protection Low heat generation Reliable and long-lasting performance Easy integration into electronic projects 🔹 Technical Specifications Product Type: AC-DC SMPS Power Supply Module Input Voltage Range: 100V – 220V AC Input Frequency: 50Hz – 60Hz Output Voltage: 12V DC Output Current: 1.3A Output Power: 15.6W Efficiency: Up to 86% Overcurrent Protection: Yes Short Circuit Protection: Yes Operating Temperature: -20°C to +80°C Dimensions: 96 × 32 × 16 mm Weight: Approximately 43g 🔹 Applications This SMPS module is suitable for: LED strip lighting CCTV camera systems Smart home devices Automation projects Industrial control systems Communication equipment Arduino projects ESP32 and IoT systems DIY electronics projects 🔹 Package Includes 1 × AC-DC 100-220V to 12V 1.3A 15.6W SMPS Power Supply Module
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
4S 20A 18650 Lithium Battery Protection Board
[Lithium Battery Protection Board] The HXYP-4S-BM20 4S 20A Lithium Battery Protection Board (BMS) is a compact and reliable battery management system designed specifically for 3.7V lithium-ion 18650 rechargeable cells. This board provides complete protection and safe operation for building 4-cell (4S) battery packs with a nominal output voltage of up to 14.8V and a full charge voltage of 16.8V. Featuring a square, lightweight, and portable design, this protection board is easy to integrate into custom battery packs and compact enclosures. It allows you to connect four 18650 lithium cells simultaneously and ensures balanced and safe charging and discharging. The board includes multiple built-in safety protections such as over-charge protection, over-discharge protection, over-current protection, and short-circuit protection, helping to extend battery life and prevent damage or hazardous conditions. This module is ideal for use in DIY battery packs, power tools, solar storage systems, electric scooters, backup power supplies, robotics, and other lithium battery applications. ⭐ Key Features ✔ Designed for 4S (4-cell) 18650 lithium-ion battery packs ✔ Supports continuous current up to 15A ✔ Built-in protection for over-charge, over-discharge, over-current & short circuit ✔ Compact square PCB design – easy to install ✔ Low power consumption with ultra-low quiescent current ✔ Increases battery safety, reliability, and lifespan 🔧 Technical Specifications Model: HXYP-4S-BM20 Battery Type: 3.7V Li-ion (18650 rechargeable cells) Configuration: 4S (4 cells in series) Charging Voltage: 16.8V Maximum Continuous Current: 15A Maximum Peak Current: 20A Over-Charge Voltage: 4.25 ± 0.05V per cell Over-Discharge Voltage: 2.5 ± 0.05V per cell Quiescent Current: < 30 µA Board Size: 3.6 × 3.6 cm Country of Origin: China 🎯 Applications DIY lithium battery packs Power tools & backup batteries Solar energy storage systems Electric scooters & e-bikes Robotics & embedded systems UPS & portable power stations 🔹 Battery Connection Terminals on Board Usually marked as: B- → Battery Pack Negative (Cell 1 –) B1 → Connection between Cell 1 & Cell 2 B2 → Connection between Cell 2 & Cell 3 B3 → Connection between Cell 3 & Cell 4 B+ → Battery Pack Positive (Cell 4 +) 🔹 Output / Charge Terminals P- → Load / Charger Negative P+ → Load / Charger Positive (same as B+) 🔧 Step-by-Step Wiring Connect 4 cells in series: Cell order:Cell1 → Cell2 → Cell3 → Cell4 Then wire as: Cell1 negative → B- Cell1 positive / Cell2 negative → B1 Cell2 positive / Cell3 negative → B2 Cell3 positive / Cell4 negative → B3 Cell4 positive → B+ For charging & discharging: Charger / Load positive → P+ (or B+) Charger / Load negative → P- ⚠️ Safety Tips Always connect balance wires before main power wires Use proper insulated wires and nickel strips Do not short any terminals Use a 16.8V Li-ion charger for 4S packs Ensure BMS current rating matches your load 📦 Package Includes 1 × -4S-BM20 4S 20A Lithium Battery Protection Board (BMS) * Product Images are shown for illustrative purposes only and may differ from actual product.
4mm Solder Wick / Desoldering Braid – 1.2 Meter Copper Wick
[Desoldering Wick] 4mm Solder Wick / Desoldering Braid – 1.2 Meter Copper Wick The 4mm Solder Wick / Desoldering Braid is a practical electronics rework tool designed for removing unwanted solder from PCBs, electronic components, solder pads, and circuit boards. Made from finely braided copper strands, the wick absorbs molten solder efficiently when heated with a soldering iron, helping clean solder bridges and excess solder. Also known as desoldering braid or solder removal wick, it is especially useful during PCB repair, SMD rework, component replacement, and general electronics servicing. Its compact 4mm width makes it suitable for a wide range of soldering and desoldering applications. ⭐ Key Features High-quality braided copper desoldering wick Helps remove excess and unwanted solder 4mm width for versatile electronics work Easy to use with a soldering iron Helps remove solder bridges from PCB pads Suitable for SMD and through-hole components Flexible copper braid for precise desoldering Ideal for electronics repair and rework 📋 Technical Specifications Product Type: Solder Wick / Desoldering Braid Width: 4mm Length: 1.2 Meter Material: Copper Application: Solder Removal / Electronics Rework Form: Braided Copper Wick 🔧 Applications PCB Repair SMD Rework Through-Hole Component Desoldering Motherboard Repair Solder Bridge Removal Removing Excess Solder IC & Component Replacement Electronics Repair DIY Soldering Projects General Electronic Servicing 📦 Package Includes 1 × 4mm Solder Desoldering Wick – 1.2 Meter ⚠️ Note Product images are shown for illustrative purposes only and may differ slightly from the actual product in terms of packaging, color, or appearance.
Type-C USB Ultrasonic Mist Maker Humidifier – 5V Atomizer Module with 108KHz Disc & PCB
[Ultrasonic Sensor] The Type-C USB Ultrasonic Mist Maker Humidifier Module is a compact and efficient atomization device designed for humidification and mist generation applications. It uses advanced ultrasonic technology to produce a fine and continuous mist, helping improve air moisture and indoor comfort. In addition, the module operates using a 108KHz high-frequency ceramic atomizer disc, which ensures stable mist generation with low noise and efficient performance. As a result, it is suitable for personal humidifiers, aroma diffusers, facial beauty equipment, and DIY mist projects. Because of its convenient Type-C USB power interface, the module can be powered easily using USB adapters, power banks, laptops, and other 5V USB power sources. Furthermore, the compact PCB design allows easy integration into portable and custom-built humidifier systems. The module also features low power consumption and reliable operation for continuous use. Moreover, the built-in safety protection helps automatically stop operation when the water level becomes too low. This ultrasonic mist maker is widely used in humidifiers, mist generators, aromatherapy devices, beauty care equipment, and medical atomization systems. 🔹 Key Features Ultrasonic mist generation technology 108KHz ceramic atomizer disc Convenient Type-C USB power input Fine and continuous mist output Compact and lightweight design Low power consumption Quiet operation Automatic low water protection Suitable for DIY humidifier projects 🔹 Technical Specifications Product Type: Ultrasonic Mist Maker Module Input Voltage: 5V DC Power Interface: Type-C USB Operating Frequency: 108KHz Atomization Mode: Continuous Power Consumption: Less than 3W Mist Output: Adjustable Operating Temperature: 5°C to 45°C Storage Temperature: -10°C to 60°C Material: PCB + Ceramic Atomization Film Humidity Range: Non-Condensing Application Type: Humidifier / Mist Generator 🔹 Applications This ultrasonic mist maker module is suitable for many applications, including: Portable humidifiers DIY mist generators Aroma diffusers Facial beauty equipment Medical liquid atomizers Air moisture control systems Decorative mist projects 🔹 Package Includes 1 × Humidifier Driver Board 1 × 16mm Atomizer Plate 1 × Cotton Stick Stand 1 × Cotton Stick
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
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
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.
DC Power Connector Male 5.5mm × 2.1mm Barrel Plug
[Power Connector] DC Power Connector Male 5.5mm × 2.1mm Barrel Plug 5.5×2.1mm DC Barrel Plug • Male Power Connector • Solder Type • Black Housing • DIY & Power Supply Applications The DC Power Connector Male 5.5mm × 2.1mm Barrel Plug is a reliable and easy-to-use connector designed for DC power supply, CCTV systems, LED lighting, routers, adapters, Arduino projects, and DIY electronics applications. Compatible with standard 5.5mm outer diameter and 2.1mm inner diameter DC barrel jacks, this connector provides a secure and stable power connection for low-voltage DC devices. The connector features a solder-type terminal design, allowing wires to be permanently connected for a durable electrical connection. The outer shell unscrews easily to expose the solder terminals and built-in strain relief, helping prevent cable damage and improving long-term reliability. Made from high-quality plastic and metal materials, this DC barrel plug is suitable for 6V to 30V DC applications up to 1A, making it ideal for custom power cables, electronics repairs, prototyping, and power distribution projects. ⭐ Features Standard 5.5mm × 2.1mm DC barrel plug Male connector Compatible with standard 5.5×2.1mm female DC jacks Solder-type terminals for secure wire connection Built-in strain relief for cable protection Durable plastic housing with metal contacts Easy assembly with screw-on outer shell Reliable and stable power connection Suitable for 6V–30V DC applications Compact and lightweight design Ideal for DIY electronics and power supply projects 📋 Technical Specifications Product Type: DC Power Barrel Plug Connector Type: Male Barrel Size: 5.5mm (Outer) × 2.1mm (Inner) Connection Type: Solder Terminal Voltage Rating: 6V–30V DC Current Rating: Up to 1A Polarity: Center Positive Compatible Housing Material: Plastic Contact Material: Metal Color: Black Mounting Type: Cable Mount 🔧 Applications DC Power Supplies CCTV Camera Installations LED Strip Lighting Routers and Modems Arduino and ESP32 Projects DIY Electronics Power Adapters Battery Packs Electronic Repairs Prototyping Robotics Projects Custom DC Power Cables Low-Voltage DC Systems 📦 Package Includes 1 × DC Power Connector Male 5.5mm × 2.1mm Barrel Plug ⚠️ Note Verify polarity before connecting power. Ensure solder joints are properly insulated. Not suitable for applications exceeding the rated current. Product appearance may vary slightly depending on the manufacturing batch.
Holder Spacer for Cell Cylindrical Single Li-Ion 18650 Battery
[Lithium Battery Holder] The 18650 Single Lithium Battery Spacer Holder is a high-quality hard plastic separator designed for securely holding a single 18650 lithium-ion battery cell. It helps maintain proper spacing between cells while improving battery pack organization, safety, and assembly efficiency. In addition, the spacer features a precision-molded design that allows easy insertion and removal of battery cells. As a result, it simplifies battery pack construction for both hobbyists and professional users. Because of its durable hard plastic construction, the holder can withstand normal operating temperatures and mechanical stress. Furthermore, it provides better airflow between cells, helping improve heat dissipation in battery pack assemblies. The modular interlocking design allows multiple spacers to be connected together. Therefore, users can easily create custom battery pack configurations such as 2S, 3S, 4S, and larger battery arrangements. This battery spacer is widely used in DIY battery packs, power banks, solar energy storage systems, electric vehicles, UPS systems, and lithium battery projects. 🔹 Key Features Designed for single 18650 battery cell High-quality hard plastic construction Precision-molded design Interlocking modular structure Easy battery installation and removal Improves battery organization Provides cell spacing for better cooling Durable and long-lasting design Suitable for DIY battery pack assembly 🔹 Technical Specifications Product Type: Battery Spacer Holder Battery Compatibility: 18650 Lithium-Ion Cells Capacity: 1 Cell Material: High-Quality Hard Plastic Color: Black (may vary by batch) Mounting Style: Interlocking Modular Design Heat Resistance: Suitable for battery pack applications Reusable: Yes Application: Battery Pack Assembly and Cell Separation 🔹 Applications This battery spacer holder is suitable for: DIY lithium battery packs Power bank projects Solar battery storage systems Electric vehicle battery packs UPS battery assemblies Battery repair projects Robotics power systems Electronics hobby projects 🔹 Package Includes 1 × 18650 Single Cell Battery Spacer Holder