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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

    Big Dome Push Button - Red

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    6

    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
  • Logic Level Converter Bi-Directional (Bob-12009) - Active Components

    Logic Level Converter Bi-Directional (BOB-12009)

    SparkFun
    £2.39 inc VAT
    £1.99 ex VAT
    1

    DESCRIPTIONIf 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 conver...

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    £2.39 inc VAT
    £1.99 ex VAT
  • Big Dome Push Button - Blue - Switches

    Big Dome Push Button - Blue

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    2

    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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    £7.99 inc VAT
    £6.66 ex VAT
  • Big Dome Push Button - Green - Switches

    Big Dome Push Button - Green

    Cool Components
    £7.99 inc VAT
    £6.66 ex VAT
    3

    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
  • Rotary Encoder - Illuminated (Rgb) (Com-10982) - Switches

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

    SparkFun
    £4.94 inc VAT
    £4.12 ex VAT

    DESCRIPTIONRotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just ...

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    £4.94 inc VAT
    £4.12 ex VAT
  • Resistor Kit - 1/4W (500 Total) (Com-10969) - Kits

    Resistor Kit - 1/4W (500 total) (COM-10969)

    SparkFun
    £8.51 inc VAT
    £7.09 ex VAT
    4

    DESCRIPTION This resistor kit comes with 25 each of 20 different resistor values (including 0Ω links!). All of these resistors are stapled into a ...

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    £8.51 inc VAT
    £7.09 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
    £17.99 inc VAT
    £14.99 ex VAT
    3

    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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    £17.99 inc VAT
    £14.99 ex VAT
  • Momentary Push Button Switch - 12Mm Square - Switches

    Momentary Push Button Switch - 12mm Square

    Generic / OEM
    £0.46 inc VAT
    £0.38 ex VAT
    1

    DESCRIPTIONThis 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
  • Toggle Switch And Cover - Illuminated (Red) (Com-11310) - Buttons

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

    SparkFun
    £2.83 inc VAT
    £2.36 ex VAT
    4

    DESCRIPTIONThis 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 th...

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    £2.83 inc VAT
    £2.36 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
    £13.67 inc VAT
    £11.39 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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    £13.67 inc VAT
    £11.39 ex VAT
  • Rotary Potentiometer - 10K Ohm Linear - Passive Components

    Rotary Potentiometer - 10k Ohm, Linear

    Generic / OEM
    £1.44 inc VAT
    £1.20 ex VAT
    2

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

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    £1.44 inc VAT
    £1.20 ex VAT
  • 5V Step-Up/step-Down Voltage Regulator S9V11F5 - Active Components

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

    Pololu
    £5.41 inc VAT
    £4.51 ex VAT
    2

    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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    £5.41 inc VAT
    £4.51 ex VAT
  • Tca9548A I2C Multiplexer (Id: 2717) - Active Components

    TCA9548A I2C Multiplexer (ID: 2717)

    Adafruit
    £6.91 inc VAT
    £5.76 ex VAT

    DESCRIPTIONYou 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, thi...

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    £6.91 inc VAT
    £5.76 ex VAT
  • Big Dome Push Button - Yellow - Switches

    Big Dome Push Button - Yellow

    Cool Components
    £7.99 inc VAT
    £6.66 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
    £7.99 inc VAT
    £6.66 ex VAT
  • White Led Backlight Module - Small 12Mm X 40Mm - Leds

    White LED Backlight Module - Small 12mm x 40mm

    Generic / OEM
    £1.79 inc VAT
    £1.49 ex VAT
    3

    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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    £1.79 inc VAT
    £1.49 ex VAT