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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Out of stockThermal Grizzly Kryonaut 1 g
High-performance thermal paste, -250°C to 350°C operational range.
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
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)
3V 100mA LED Filament 45mm COB Edison Bulb Filament
[COB LED] The 3V 100mA LED Filament 45mm is a flexible COB LED light source designed for decorative lighting, Edison bulb restoration, DIY lamps, and creative illumination projects. Available in a variety of colors, it delivers bright and uniform light output while maintaining low power consumption. In addition, the filament provides 360-degree illumination, closely replicating the appearance of traditional Edison-style incandescent filaments. As a result, it is widely used in decorative bulbs, custom lighting fixtures, model lighting, art installations, and creative electronics projects. Because of its flexible substrate design, the filament can be slightly bent to fit custom enclosures and unique lighting arrangements. Furthermore, it produces minimal heat during operation, making it safe for compact and enclosed lighting applications. The advanced COB LED structure ensures consistent brightness, excellent efficiency, and long service life. Moreover, the solderable metal terminals allow quick integration into DIY electronics and lighting projects. 🔹 Key Features Available in multiple colors Bright and uniform light output COB LED filament design Low power consumption Excellent energy efficiency Minimal heat generation 360° illumination pattern Lightweight and compact structure Easy solderable metal terminals Long operational life 🔹 Technical Specifications Product Type: COB LED Filament Operating Voltage: 2.8V to 3.2V DC Rated Voltage: 3V DC Forward Current: 100mA (Maximum) Power Consumption: Approximately 0.3W Brightness: Approximately 80–100 Lumens per Watt Filament Type: COB (Chip-on-Board) LED Filament Base Material: Flexible Polymer Substrate Connection Type: Solderable Metal End-Caps led Length: 45mm Total Length: 55mm Filament Diameter: Approximately 2.0mm Terminal Size: Approximately 2mm × 2mm Weight: Less than 1g Available Colors: Warm White, Cool White, Red, Blue, Green (subject to availability) 🔹 Mechanical Specifications Filament construction Durable polymer substrate Highly resistant to mechanical shock Lightweight design Easy soldering connection terminals Suitable for custom lamp and lighting assemblies 🔹 Applications This LED filament is suitable for: Edison bulb repair and replacement Decorative LED lamps Custom lighting fixtures Battery-powered lighting projects Art installations Scale models and dioramas Display and showcase lighting Wearable electronics DIY electronics projects Creative lighting applications 🔹 Package Includes 1 × 3V 100mA LED Filament 38mm (Selected Color)
Keltron 3300uF 25V Radial Electrolytic Capacitor High Performance Capacitor
[Through Hole Capacitor] The Keltron 3300uF 25V Electrolytic Capacitor is a high-performance aluminum electrolytic capacitor designed for energy storage, voltage filtering, and ripple suppression applications. It is widely used in power supply circuits, audio amplifiers, inverter systems, battery chargers, and industrial electronics. In addition, the capacitor provides excellent filtering capability by reducing voltage fluctuations and unwanted electrical noise. As a result, it helps improve circuit stability and enhances overall system performance. Because of its 3300uF high capacitance value, the capacitor is ideal for smoothing DC power rails and handling transient current demands. Furthermore, the 25V DC voltage rating makes it suitable for a variety of low-voltage electronic applications. The radial lead design allows easy PCB installation and secure mounting. Moreover, Keltron capacitors are known for their dependable quality, stable electrical characteristics, and long operational life. This capacitor is commonly used in audio amplifier power supplies, SMPS circuits, LED power supplies, inverter systems, battery chargers, and DIY electronics projects. 🔹 Key Features Genuine Keltron capacitor High capacitance 3300uF value Rated voltage of 25V DC Excellent ripple filtering performance Suitable for audio and power supply circuits Low leakage current Long operational life Radial lead through-hole design Reliable and stable performance 🔹 Technical Specifications Brand: Keltron Product Type: Electrolytic Capacitor Capacitor Type: Aluminum Electrolytic Capacitance: 3300uF Rated Voltage: 25V DC Tolerance: ±20% Mounting Type: Through-Hole (Radial Lead) Polarized: Yes Lead Type: Radial Operating Temperature: Up to 105°C (Series Dependent) Application: Filtering, Decoupling, Energy Storage 🔹 Applications This capacitor is suitable for: Audio amplifier circuits Power supply filtering SMPS circuits Inverter systems Battery chargers LED driver circuits Industrial electronics DIY electronics projects Electronic repair applications 🔹 Package Includes 1 × Keltron 3300uF 25V Radial Electrolytic Capacitor
16mm Ultrasonic Humidifier Atomizer Disc Piezoelectric Mist Maker Transducer Module 108KHz
[Ultrasonic Sensor] The 16mm Ultrasonic Humidifier Atomization Module is a high-efficiency piezoelectric transducer designed for mist generation and humidification applications. It operates using ultrasonic vibration technology to convert water into ultra-fine mist particles quickly and efficiently. In addition, the module works on the principle of ultrasonic cavitation, where high-frequency sound waves generate rapid compression and rarefaction inside the water. As a result, microscopic water droplets are released into the air as cool mist. Because of its 108KHz resonant frequency, the atomizer produces fine and uniform fog particles while maintaining low noise operation. Furthermore, the compact 16mm design allows easy integration into humidifiers, aroma diffusers, medical atomizers, and DIY mist generation systems. The atomization disc is built using durable piezoelectric material for long operational life and stable performance. Moreover, the module consumes very little power while providing efficient mist output. ⚠️ Note: This atomizer module requires a compatible ultrasonic driver board for operation. The driver circuit is not included in the package and must be purchased separately. This ultrasonic humidifier module is widely used in humidifiers, beauty care devices, medical atomization equipment, aroma diffusers, and DIY electronics projects. 🔹 Key Features 16mm ultrasonic atomizer disc High-frequency 108KHz operation Fine and uniform mist generation Low noise operation Small fog particle output Long operational life High stability performance Low power consumption Suitable for humidifier and mist maker projects 🔹 Technical Specifications Product Type: Ultrasonic Atomizer Transducer Module Atomizer Diameter: 16mm Operating Voltage: DC 3.7V –5V Resonant Frequency: 108KHz Resonant Impedance: < 2 Ohms Coupling Factor: > 52% Electrostatic Capacity: 3000pF Spray Quantity: > 110mL/h Operation Type: Ultrasonic Piezoelectric Atomization Fog Particle Type: Ultra-Fine Mist Noise Level: Low Noise Operation Material: Piezoelectric Ceramic + Metal 🔹 Working Principle The ultrasonic atomizer uses a piezoelectric transducer immersed in water. When driven at high frequency, the transducer creates rapid mechanical oscillations that generate cavitation bubbles and surface waves. Consequently, microscopic water droplets are released into the air as cool mist with minimal energy consumption. 🔹 Applications This ultrasonic atomizer module is suitable for many applications, including: Humidifiers Mist makers Aroma diffusers Medical atomizers Facial beauty equipment DIY humidification projects Decorative fog systems 🔹 Package Includes 1 × 16mm Ultrasonic Humidifier Atomization Sensor Module
Out of stockN20 12V 100rpm Micro Metal Gear DC Motor(High Torque) With JST Wire & Dust Cover
[Gear Motor] Overview of this N20 6-12V 100RPM metal gear motor Introducing the N20 6-12V 100rpm Micro Metal Gear DC Motor with High Torque, featuring exceptional durability and performance. This N20 metal gear motor boasts high torque. It also make it an ideal choice for various device who need robust and high rotational power. It is also built with a dust cover and a JST wire. This N20 6-12V dc gear motor also ensure protection against external elements for long life. Engineered for efficiency, the N20 6-12V 100RPM metal gear motor is designed to deliver a consistent and powerful rotational force. Its high torque capabilities make it perfect for applications demanding reliability, such as robotics, DIY projects, or small machinery. The inclusion of a dust cover enhances the motor’s resilience, ensuring it remains operational in challenging conditions. It also come with waterproof and dustproof features. This N20 100RPM dc gear motor stands out as a durable and versatile solution for your high torque needs. Trust the N20 6-12V dc gear motor with dust cover to provide a dependable and durable solution for your projects. And combine high torque performance with protective features for long life. Features High Torque Performance: The N20 6-12V 100RPM metal gear motor stands out with its high torque capabilities. And also ensure it can easily handle device who need robust and powerful rotational force. Dust Cover Protection: It also Feature a built in dust cover. This N20 dc gear motor is well protected against external particles. The dust cover also ensure the motor work in various environment. Waterproof Design: With a waterproof design, the N20 100RPM dc gear motor is ready to perform in harsh conditions. Its waterproof features add an extra layer of durability, making it a versatile solution for applications where exposure to liquids is a concern. JST Wire Connectivity: The N20 6-12V 100RPM metal gear motor comes equipped with a JST wire. And also provide a easy and secure connection for easy use in electronic project. This feature streamlines the setup process, making it user-friendly for both hobbyists and professionals. Versatile Applications: Designed for versatility, this N20 dc gear motor is suitable for a range of applications, including robotics, DIY projects, and small machine. Its adaptability and durability make it a go-to choice for various projects where high rotational power is important. Specification Specification Description Stall Current (A) 0.75 Rated Torque (kg-cm) 0.97 Stall Torque (Kg-Cm) 3.0 Motor Body Size (Diameter) 12mm Operating Voltage (VDC) 6 – 12 Rated Operating Voltage (VDC) 12 No Load Speed (RPM) 100 Rated Speed (RPM) 100 Shaft Type D-type, Single Side Shaft Diameter (mm) 3 Weight (gm) 12 Output Axial Length (mm) 10 Fuselage w/o Shaft Length (mm) 26 Screw Size M3 Protection Dust cover Main use of this N20 6-12V 100RMP waterproof dustproof dc gear motor Robotics Projects: The N20 6-12V 100RPM metal gear motor is also use for precise rotational movements in robotics device, offering high torque and reliability. DIY Electronics: DIY enthusiasts can also use high torque performance of this dc gear motor in various electronic projects. Small Machinery: The N20 motor with its high torque is perfect for applications in small machine. And provide efficient and dependable rotational power. Automation Systems: This motor easily fit into automation systems, contributing to enhanced machine performance with its robust and controlled rotational power. Educational Purposes: In education labs and projects, the N20 100RPM dc gear motor serves as a valuable tool. And also allow students to gain hands on experience and insights into motor mechanics and applications.
LM358P PDIP-8 High Gain Operational Amplifier
[Logic Gates IC] Description These devices consist of two independent, high-gain, frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages. Operation from split supplies also is possible if the difference between the two supplies is 3 V to 32 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. The low supply-current drain is independent of the magnitude of the supply voltage. Note: Product may vary from images shown in terms of brand name according to the availability. Package Includes: 1 x LM358P PDIP-8 High Gain Operational Amplifier
NE5532 2.1 Channel Tone Preamplifier Board Audio Equalizer Subwoofer Preamp Tone Control Bass Pre Amplifier DC10-24V
[Amplifier Board] Product Introduction The product innovation uses a single power supply, which can share power with the power amplifier board. It is very convenient to use NE5532 as the operational amplifier. The operational amplifier IC base is welded to facilitate the replacement of the operational amplifier, and improve the playability. All CBB capacitors are Philips capacitors, and Potentiometer are high-quality platform produced sealed Potentiometer. You can check our others amplifier boards here. Product parameters Product name: 2.1 channel front stage board Frequency adjustment range: 22Hz-300Hz Power supply voltage: DC10-24V Operational amplifier model: NE5532 Board size: 82x30mm Number of channels: single/dual channel input possible Board thickness: 1.6mm Audio input: onboard terminal Centre-to-centre distance of Potentiometer: 3cm * 3cm
220uf / 25v Electrolytic Capacitor-Keltron
[Through Hole Capacitor] The KELTRON 220uF 25V Electrolytic Capacitor is a high-quality aluminum electrolytic capacitor designed for filtering, coupling, decoupling, and energy storage applications in electronic circuits. It is widely used in power supplies, audio amplifiers, control circuits, and industrial electronic equipment. In addition, the capacitor effectively smooths DC voltage and suppresses unwanted electrical noise. As a result, it helps improve circuit stability and overall system performance. Because of its 220uF capacitance value, the capacitor provides reliable energy storage and transient suppression for low-voltage electronic circuits. Furthermore, the 25V DC rating makes it suitable for various power supply and signal processing applications. The radial lead design allows easy PCB installation and secure mounting. Moreover, KELTRON capacitors are known for their dependable performance, long operational life, and stable electrical characteristics. This capacitor is commonly used in audio amplifiers, SMPS power supplies, battery chargers, LED drivers, inverter circuits, and DIY electronics projects. 🔹 Key Features Genuine KELTRON capacitor High-quality aluminum electrolytic construction 220uF capacitance value 25V DC rated voltage Excellent filtering and decoupling performance Low leakage current Long operational life Easy PCB mounting Suitable for power supply and audio applications 🔹 Technical Specifications Brand: KELTRON Product Type: Electrolytic Capacitor Capacitor Type: Aluminum Electrolytic Capacitance: 220uF Rated Voltage: 25V DC Tolerance: ±20% Mounting Type: Through-Hole (Radial Lead) Polarized: Yes Lead Type: Radial Operating Temperature: Up to 105°C (Series Dependent) Application: Filtering, Decoupling, Energy Storage 🔹 Applications This capacitor is suitable for: Power supply filtering Audio amplifier circuits SMPS power supplies LED driver circuits Battery chargers Inverter circuits Industrial electronics DIY electronics projects Electronic repair applications 🔹 Package Includes 1 × KELTRON 220uF 25V Electrolytic Capacitor
470uF 25V Radial Electrolytic Capacitor High Performance Capacitor KELTRON
[Through Hole Capacitor] The KELTRON 470uF 25V Electrolytic Capacitor is a reliable aluminum electrolytic capacitor designed for filtering, energy storage, and decoupling applications in electronic circuits. It is commonly used in power supplies, audio equipment, control circuits, and electronic repair work. In addition, the capacitor helps smooth voltage fluctuations and suppress unwanted electrical noise. As a result, it improves circuit stability and enhances the performance of electronic devices. Because of its 470uF capacitance value, the capacitor provides effective filtering for DC power rails and transient suppression applications. Furthermore, the 25V voltage rating makes it suitable for low-voltage power supplies, amplifier circuits, and embedded electronics projects. The radial lead design allows convenient PCB installation and secure mounting. Moreover, the high-quality aluminum electrolytic construction offers dependable performance and long service life. This capacitor is widely used in audio amplifiers, SMPS circuits, LED drivers, battery chargers, Arduino projects, and industrial electronic equipment. 🔹 Key Features High-quality aluminum electrolytic capacitor 470uF capacitance value 25V DC voltage rating Excellent filtering and decoupling performance Helps reduce voltage ripple and noise Suitable for audio and power supply applications Radial lead through-hole design Reliable long operational life Easy PCB installation 🔹 Technical Specifications Product Type: Electrolytic Capacitor Capacitor Type: Aluminum Electrolytic Capacitance: 470uF Rated Voltage: 25V DC Tolerance: ±20% Mounting Type: Through-Hole (Radial Lead) Polarized: Yes Operating Temperature: -40°C to +105°C (varies by series) Lead Type: Radial Leads Application: Filtering, Decoupling, Energy Storage 🔹 Applications This capacitor is suitable for: Power supply filtering Audio amplifier circuits SMPS power supplies LED driver circuits Battery chargers DC voltage smoothing Arduino and microcontroller projects Industrial electronics Electronic repair applications 🔹 Package Includes 1 × 470uF 25V Radial Electrolytic Capacitor
Keltron 2200uF 25V Radial Electrolytic Capacitor High Performance Capacitor
[Through Hole Capacitor] The 2200uF 25V Electrolytic Capacitor is a high-capacitance aluminum electrolytic capacitor designed for energy storage, voltage filtering, and decoupling applications. It is widely used in power supplies, audio amplifiers, industrial electronics, and electronic repair projects. In addition, the capacitor provides excellent ripple current handling and stable electrical performance. As a result, it effectively reduces voltage fluctuations, suppresses electrical noise, and improves overall circuit reliability. Because of its 2200uF capacitance, this capacitor can store a significant amount of electrical energy for smoothing DC outputs and reducing transient voltage spikes. Furthermore, the 25V rated voltage makes it suitable for a wide range of low-voltage power supply applications. The radial lead design allows easy PCB mounting and convenient installation. Moreover, the capacitor is manufactured using high-quality aluminum electrolytic technology to ensure long service life and dependable operation. This capacitor is commonly used in SMPS power supplies, audio amplifiers, inverter circuits, battery chargers, LED drivers, Arduino projects, and general electronic circuits. 🔹 Key Features High capacitance 2200uF value Rated voltage of 25V DC Radial lead electrolytic capacitor Excellent filtering and decoupling performance Low impedance design High ripple current capability Reliable long operational life Suitable for power supply and audio applications Easy PCB mounting 🔹 Technical Specifications Product Type: Aluminum Electrolytic Capacitor Capacitance: 2200uF Rated Voltage: 25V DC Tolerance: ±20% Mounting Type: Through-Hole (Radial Lead) Capacitor Type: Polarized Electrolytic Operating Temperature: -40°C to +105°C (varies by manufacturer series) Lead Spacing: Typically 7.5mm – 10mm (varies by batch) Application: Filtering, Decoupling, Energy Storage Series Resistance: Low ESR (depends on series) 🔹 Applications This capacitor is suitable for: Audio amplifier circuits Power supply filtering SMPS circuits Voltage stabilization circuits Battery chargers Inverter systems LED driver circuits DIY electronics projects Industrial electronic equipment Electronic repair work 🔹 Package Includes 1 × 2200uF 25V Radial Electrolytic Capacitor
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