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Components

There are literally millions of passive and active electronic components, we stock the best and most popular for use in your projects.

Active electronic components in this category include analog to digital converters, voltage regulators, diodes, transistors and opto-isolators. The passive electronics components in this category comprise of super capacitors, resistors and potentiometers.

We have a great selection of the most popular programmable PIC micro controllers including ATMEL MCUs.

We stock the most commonly used switches and buttons, from big dome push buttons and arcade buttons to tactile switches and micro switches, plus a staggering array of LEDs.

  • Big Dome Push Button - Red - Buttons
    Sold out

    Big Dome Push Button - Red

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    11 reviews

    DESCRIPTION It's the end of the world, and you need a button to press. This is it. A 98mm diameter (outside diameter) dome illuminated push button ...

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    £7.99 inc VAT
    £6.66 ex VAT
    Sold out
  • Logic Level Converter Bi-Directional (Bob-12009) - Active Components

    Logic Level Converter Bi-Directional (BOB-12009)

    SparkFun
    £2.70 inc VAT
    £2.25 ex VAT
    7 reviews

    DESCRIPTION If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The bi-directional logic level conv...

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    £2.70 inc VAT
    £2.25 ex VAT
  • Digital Rgb Addressable Led Weatherproof Strip 60 Led -1M (Adafruit Neopixel Compatible) - Leds

    Digital RGB Addressable LED Weatherproof Strip 60 LED -1m (Adafruit NeoPixel Compatible)

    Cool Components
    £11.39 inc VAT
    £9.49 ex VAT
    8 reviews

    DESCRIPTION This is a 1 meter long flexible strip of 60 individually controllable RGB LEDs. Each 1 meter strip can be cut into sections and still w...

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    £11.39 inc VAT
    £9.49 ex VAT
  • Electronic Parts Kit - Passive Components

    Electronic Parts Kit

    Cool Components
    £19.99 inc VAT
    £16.66 ex VAT
    9 reviews

    DESCRIPTION This massive kit has 280 parts! The electronic parts kit is a comprehensive selection of components for making a wide variety of elect...

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    £19.99 inc VAT
    £16.66 ex VAT
  • Toggle Switch And Cover - Illuminated (Red) (Com-11310) - Buttons

    Toggle Switch and Cover - Illuminated (Red) (COM-11310)

    SparkFun
    £3.36 inc VAT
    £2.80 ex VAT
    4 reviews

    DESCRIPTION This simple on-off switch is rated for 20A at 12V but who cares about all that, it looks way awesome. These toggle switches come with t...

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    £3.36 inc VAT
    £2.80 ex VAT
  • Momentary Push Button Switch - 12Mm Square - Switches
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    Momentary Push Button Switch - 12mm Square

    Generic / OEM
    £0.46 inc VAT
    £0.38 ex VAT
    2 reviews

    DESCRIPTION This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it 'clicks' really...

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    £0.46 inc VAT
    £0.38 ex VAT
    Sold out
  • Big Dome Push Button - Blue - Switches
    Save 62%

    Big Dome Push Button - Blue

    Cool Components
    Original Price £7.99 inc VAT
    Current Price £3.07 inc VAT
    £2.56 ex VAT
    2 reviews

    DESCRIPTION It's the end of the world, and you need a button to press. This is it. A 100mm diameter (outside diameter) dome illuminated push button...

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    Original Price £7.99 inc VAT
    Current Price £3.07 inc VAT
    £2.56 ex VAT
    Save 62%
  • Rotary Encoder - Illuminated (Rgb) (Com-10982) - Switches

    Rotary Encoder - Illuminated (RGB) (COM-10982)

    SparkFun
    £5.23 inc VAT
    £4.36 ex VAT
    2 reviews

    DESCRIPTION Rotary encoders can be used similarly to potentiometers. The difference is that an encoder has full rotation without limits (It just go...

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    £5.23 inc VAT
    £4.36 ex VAT
  • Big Dome Push Button - Green - Switches

    Big Dome Push Button - Green

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    4 reviews

    DESCRIPTION It's the end of the world, and you need a button to press. This is it. A 98mm diameter (outside diameter) dome illuminated push button ...

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    £7.99 inc VAT
    £6.66 ex VAT
  • 5V Step-Up/step-Down Voltage Regulator S9V11F5 - Active Components
    Save 28%

    5V Step-Up/Step-Down Voltage Regulator S9V11F5

    Pololu
    Original Price £22.67 inc VAT
    Current Price £16.38 inc VAT
    £13.65 ex VAT
    5 reviews

    DESCRIPTION The 5V switching step-up/step-down voltage regulator S9V11F5 efficiently produces 5 V from input voltages between 2 V and 16 V. (Note:...

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    Original Price £22.67 inc VAT
    Current Price £16.38 inc VAT
    £13.65 ex VAT
    Save 28%
  • Tca9548A I2C Multiplexer (Id: 2717) - Active Components

    TCA9548A I2C Multiplexer (ID: 2717)

    Adafruit
    £6.91 inc VAT
    £5.76 ex VAT

    DESCRIPTION You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your Arduino when you realize "Uh oh, t...

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    £6.91 inc VAT
    £5.76 ex VAT
  • Resistor Kit - 1/4W - Component
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    Resistor Kit - 1/4W

    Cool Components
    £13.00 inc VAT
    £10.83 ex VAT
    6 reviews

    DESCRIPTION The Cool Components Resistor Kit contains over 400 0.25W resistors in a range of different values all packed in a reusable component bo...

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    £13.00 inc VAT
    £10.83 ex VAT
    Sold out
  • White Led Backlight Module - Small 12Mm X 40Mm - Leds
    Save 86%

    White LED Backlight Module - Small 12mm x 40mm

    Generic / OEM
    Original Price £1.79 inc VAT
    Current Price £0.25 inc VAT
    £0.21 ex VAT
    7 reviews

    DESCRIPTION These pretty strips of light are plastic diffused backlights, often seen in LCD displays. Normally they're tucked behind the LCD and sh...

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    Original Price £1.79 inc VAT
    Current Price £0.25 inc VAT
    £0.21 ex VAT
    Save 86%
  • Rotary Potentiometer - 10K Ohm Linear - Passive Components
    Save 33%

    Rotary Potentiometer - 10k Ohm, Linear

    Generic / OEM
    Original Price £1.98 inc VAT
    Current Price £1.33 inc VAT
    £1.11 ex VAT
    3 reviews

    DESCRIPTION An adjustable potentiometer can open up many interesting user interfaces. Turn the pot and the resistance changes. Connect VCC to an ou...

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    Original Price £1.98 inc VAT
    Current Price £1.33 inc VAT
    £1.11 ex VAT
    Save 33%
  • 5050 Rgb Led With Ws2812B Driver Chip - Leds

    5050 RGB LED with WS2812B Driver Chip

    Generic / OEM
    £0.36 inc VAT
    £0.30 ex VAT
    6 reviews

    DESCRIPTION The 5050 RGB LEDs with WS2812B driver chip are a 4-pin version 5mm x 5mm in size. These programmable RGB LEDs are surface mounted and ...

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    £0.36 inc VAT
    £0.30 ex VAT
  • Switch - Mini Spdt Power - Buttons
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    Switch - Mini SPDT Power

    Generic / OEM
    £0.79 inc VAT
    £0.66 ex VAT
    1 review

    DESCRIPTION Simple SPDT Switch. Rated at 30V/200mA. The pins have .1" spacing - fits great into a breadboard! Use it as a power switch or general c...

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    £0.79 inc VAT
    £0.66 ex VAT
    Sold out
  • Dc Barrel Jack Adapter - Female (Prt-10288) - Cables And Adapters

    DC Barrel Jack Adapter - Female (PRT-10288)

    SparkFun
    £2.70 inc VAT
    £2.25 ex VAT
    1

    DESCRIPTION This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, ce...

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    £2.70 inc VAT
    £2.25 ex VAT
  • Adjustable 4-12V Step-Up/step-Down Voltage Regulator S18V20Alv - Active Components

    Adjustable 4-12V Step-Up/Step-Down Voltage Regulator S18V20ALV

    Pololu
    £23.99 inc VAT
    £19.99 ex VAT

    DESCRIPTION This powerful step-up/step-down regulator efficiently produces an adjustable 4 V to 12 V output from input voltages between 3 V and 30 ...

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    £23.99 inc VAT
    £19.99 ex VAT
  • Big Dome Push Button - Yellow - Switches
    Save 62%

    Big Dome Push Button - Yellow

    Cool Components
    Original Price £7.99 inc VAT
    Current Price £3.07 inc VAT
    £2.56 ex VAT

    DESCRIPTION It's the end of the world, and you need a button to press. This is it. A 98mm diameter (outside diameter) dome illuminated push button ...

    View full details
    Original Price £7.99 inc VAT
    Current Price £3.07 inc VAT
    £2.56 ex VAT
    Save 62%
  • Big Dome Push Button - White - Buttons
    Sold out

    Big Dome Push Button - White

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    1 review

    DESCRIPTION It's the end of the world, and you need a button to press. This is it. A 98mm diameter (outside diameter) dome illuminated push button ...

    View full details
    £7.99 inc VAT
    £6.66 ex VAT
    Sold out
  • Concave Arcade Button - Red - Buttons
    Sold out

    Concave Arcade Button - Red

    Generic / OEM
    £1.54 inc VAT
    £1.28 ex VAT

    DESCRIPTION This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing....

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    £1.54 inc VAT
    £1.28 ex VAT
    Sold out
  • Switch - Mini Tactile Pcb - Buttons
    Save 44%

    Switch - Mini Tactile PCB

    Generic / OEM
    Original Price £0.34 inc VAT
    Current Price £0.19 inc VAT
    £0.16 ex VAT
    1 review

    DESCRIPTION Miniature Single Pull Single Throw switches. These are high quality momentary on switches. Perfect as a tactile reset switch. Mounts di...

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    Original Price £0.34 inc VAT
    Current Price £0.19 inc VAT
    £0.16 ex VAT
    Save 44%
  • Basic Spdt Relay Carrier With 5Vdc Relay (Assembled) - Active Components

    Basic SPDT Relay Carrier with 5VDC Relay (Assembled)

    Pololu
    £5.39 inc VAT
    £4.49 ex VAT
    2 reviews

    DESCRIPTION The Pololu basic relay carrier modules allow simple control of a single-pole, double-throw (SPDT) switch from low-voltage, low-current ...

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    £5.39 inc VAT
    £4.49 ex VAT
  • Voltage Regulator - 5V - Active Components
    Save 54%

    Voltage Regulator - 5V

    Generic / OEM
    Original Price £0.35 inc VAT
    Current Price £0.16 inc VAT
    £0.13 ex VAT
    3 reviews

    DESCRIPTIONThis is a basic voltage regulator in a TO-220 package. It's perfect for reducing up to 35v down to a stable 5v supply with a very small ...

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    Original Price £0.35 inc VAT
    Current Price £0.16 inc VAT
    £0.13 ex VAT
    Save 54%