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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
BC557 PNP General Purpose Transistor – TO-92-3 Package
[Transistor] BC557 PNP General Purpose Transistor – TO-92-3 Package BC557 PNP General Purpose Transistor 45V 100mA BC557 is a semiconductor device used to amplify or switch electronic signals and electrical power. This transistor composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. This product is known as BC557, BC557BTA, BC557ATA, BC557BTF, BC557B, BC557C, BC557A, BC557CBK, BC557BBK Features: Low current (max. 100 mA) Low voltage (max. 65 V). Low error voltage Fast switching speed Full-voltage operation High power and current handling capability Features/Specs: Product Type: BJTs – Bipolar Transistors Transistor Polarity: PNP Configuration: Single Collector- Emitter Voltage VCEO Max: 45 V Collector- Base Voltage VCBO: 50 V Emitter- Base Voltage VEBO: 5 V Pd – Power Dissipation: 500 mW Gain Bandwidth Product fT: 100 MHz DC Collector/Base Gain hFE Min: 125 DC Current Gain hFE Max: 125 at 2 mA, 5 V Minimum Operating Temperature: – 65°C Maximum Operating Temperature: + 150°C Mounting Style: Through Hole Package/Case: TO-92-3 Applications: Driver Modules like Relay Driver, LED driver etc.. Amplifier modules like Audio amplifiers, signal Amplifier etc.. Darlington pair Datasheet: BC557 PNP Transistor Package Includes: 1 x BC557 PNP General Purpose Transistor – TO-92-3 Package Note: Product Images are shown for illustrative purposes only and may differ from actual product
GL-12 840 Points Solderless Breadboard
[Breadboard and Zero PCBs] A GL-12 840 Points Solderless Breadboard is an invaluable tool for experimenting with circuit designs whether in the R&D or university lab. A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components. Parts will not be damaged so they will be available for re-use afterward. 840 Tie points – 128 Groups of 5 connected terminals, 8 Bus of 25 connected terminals Reusable for fast build a prototype of an electronic circuit – will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components – No soldering required – Can modify or revise the circuits easily Fit for jumper wire of 0.8mm diameter – Standard 2.54mm hole spacing Adhesive sheet on the back side of the board – Multiple breadboards can be spliced together too. Features: 100% brand new and high quality Practical and useful Solderless breadboard with 840 points Completely reusable and have a self-adhesive back Easy component placement Package Includes: 1 x GL-12 840 Points Solderless Breadboard
BC547 NPN Good Quality General Purpose Transistor Rapid Make
[Transistor] BC547 NPN General Purpose Transistor TO-92 Package NPN transistor in a TO-92; SOT54 plastic package. PNP complements: BC556 and BC557. This device is designed for switching and amplifier applications.BC547 is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits. APPLICATIONS: General-purpose switching and amplification Features/Specs: Part No: C-TBC547B Brand: CDIL Transistor Polarity: NPN Collector-Base Voltage: 50VDC Collector-Emitter Voltage: 45VDC Emitter-Base Voltage: 6VDC Continuous Collector Current: 100mA Output Capacitance: 4.5pF Transition Frequency: 300MHz DC Current Gain: 110-800 Operating Temperature Range: -55 – 150°C Power Dissipation: 625mW Low error voltage Fast switching speed Full-voltage operation High power and current handling capability Package: TO-92 Material: Plastic Package
Small Aluminium Heat Sink for TO-220 Package Black
[Aluminium Heat Sink] Heat Sink-TO220 Package- Black Anodized Heatsink to dissipate heat from any TO-220 package like 7805 voltage Regulators, Mosfets, transistors, etc. Generally used to keep voltage regulators and motor drivers cool, and efficient, and increases the reliability of the components. Feature/Specs: Package: TO220 PI49 Material: Aluminum Color: BLACK Processing method: Extruded Uses in Regulator, Mosfet, IGBT, High Power Transistor, IC, VGA, LED, RAM, Prevents overheating of the board, etc. Absorbs heat quickly Fast cooling High-temperature dissipation Quantity of blade: 4 Size: 22mm Blade thickness: 1mm Dimensions: 22 x 16 x12.5mm Approx Weight: 17gm Package Includes: 1x Heat Sink-TO220 Package-PI49 Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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
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.
Out of stockMini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560
[Brushed DC motor Driver] Mini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560 is a Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC and stepping motors) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz. Features: Enable facility. Overtemperature protection. Logical “0” input voltage up to 1.5V(High noise immunity). Internal clamp diodes. Package Includes: 1 x Mini Motor Drive Shield Expansion Board L293D Module.
Solderless 400 pin breadboard – Normal Quality
[Breadboard and Zero PCBs] 400 Tie Points – Solderless Breadboard is a high-quality breadboard with power lanes and printed top face for easy prototyping. A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components. It is Reusable for fast build a prototype of an electronic circuit – will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components – No soldering required – Can modify or revise the circuits easily Fit for jumper wire of 0.8mm diameter – Standard 2.54mm hole spacing Adhesive sheet on the backside of the board – Multiple breadboards can be spliced together too. Specifications and features: 400 tie points 1 Double strip, Total 300 tie points 2 Power lanes, Total 100 tie points in power lanes Perfect for Arduino shield prototyping and testing Plastic housing, metal contact clips Package Includes: 1 x 400 pin breadboard – Normal Quality – Without Packing
Out of stock170 pts Mini Breadboard SYB-170 White
[Breadboard and Zero PCBs] The SYB-170 Mini Solderless Breadboard is named for its 170 tie points. It has 17 columns of 10 holes, which are separated into two pairs by a central notch, and labeled 1 to 17. Each column is also labeled, with a letter from A to J to that they can be easily referenced in instructions ( like the squares on a chess board ). It has a peel and sticks adhesive backing as well as two mounting holes for M2 screws so you can anchor it down. This solderless, re-usable breadboard is made from sturdy ABS plastic housing. Great for prototyping, testing and creating add-on modules or new circuits. It’s standard nickel plated spring clips ensure longevity and firm grip. As a single unit, the PTBB-170W provides one large (170) tie-point IC circuit terminal strip. If you run out of space, the PTBB-400W can be pair with additional breadboards (below) to accommodate larger projects. Works with LEDs, transistors, diodes, capacitors, and resistors. Features : Use: experimental, testing, robot Matching jumper, diameter 0.8mm Accepts 20-29 AWG wire sizes. Adhesive-backed for permanent mounting. Phosphor bronze nickel plated spring clips Package Includes : 1 x 170 pts Mini Breadboard SYB-170 White
MB102 830 Points Solderless Prototype PCB Breadboard High Quality
[Breadboard and Zero PCBs] Mb102 Bread Board 830 Solder-less Points Ideal for Experimenting With Circuit Design In Labs Compatible with resistance, diodes, transistors, LED’s, Capacitors and other types of electronic components Colored coordinates for easy components placement. Accept a variety of wire sizes 20-29 AWG An MB102 830 Points Solderless Prototype PCB Breadboard is an invaluable tool for experimenting with circuit designs whether in the R&D or university lab. A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components. NOTE: The breadboard is slightly concave at the base. Note: The product is shown in the above images may be varied in terms of the brand. Features : Mb102 Bread Board 830 Solder-less Points Ideal for Experimenting With Circuit Design In Labs Compatible with resistance, diodes, transistors, LED’s, Capacitors and other types of electronic components Completely reusable Colored coordinates for easy components placement. Phosphor bronze nickel plated spring clips. Accept a variety of wire sizes 20-29 AWG Package Includes : 1 x Piece Brand New MB102 Breadboard