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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
    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
  • 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

    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
  • Big Dome Push Button - Blue - Switches
    Save 62%

    Big Dome Push Button - Blue

    Cool Components
    £7.99 inc VAT
    £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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    £7.99 inc VAT
    £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 ...

    View full details
    £7.99 inc VAT
    £6.66 ex VAT
  • Switch - Mini Spdt Power - Buttons

    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
  • Big Dome Push Button - Yellow - Switches
    Save 62%

    Big Dome Push Button - Yellow

    Cool Components
    £7.99 inc VAT
    £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
    £7.99 inc VAT
    £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
    £0.34 inc VAT
    £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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    £0.34 inc VAT
    £0.19 inc VAT
    £0.16 ex VAT
    Save 44%
  • Concave Arcade Button - Green - Buttons
    Save 68%

    Concave Arcade Button - Green

    Generic / OEM
    £1.54 inc VAT
    £0.50 inc VAT
    £0.42 ex VAT
    2 reviews

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

    View full details
    £1.54 inc VAT
    £0.50 inc VAT
    £0.42 ex VAT
    Save 68%
  • Big Dome Push Button - Red With Clear Case Rim - Buttons
    Sold out

    Big Dome Push Button - Red with Clear Case Rim

    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 (outside diameter) dome illuminated push button with a cl...

    View full details
    £7.99 inc VAT
    £6.66 ex VAT
    Sold out
  • Thumb Joystick - Buttons

    Thumb Joystick

    Generic / OEM
    £3.36 inc VAT
    £2.80 ex VAT

    DESCRIPTION This is a joystick very similar to the 'analogue' joysticks on PS2 (PlayStation 2) controllers. Directional movements are simply two p...

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    £3.36 inc VAT
    £2.80 ex VAT
  • Tactile Button Assortment - Buttons

    Tactile Button Assortment

    Generic / OEM
    £6.13 inc VAT
    £5.11 ex VAT

    DESCRIPTION These tactile buttons are great for all sorts of projects. This assortment comes with 2 of each of 6 different colours for a total of ...

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    £6.13 inc VAT
    £5.11 ex VAT
  • Concave Arcade Button - White - Buttons
    Sold out

    Concave Arcade Button - White

    Generic / OEM
    £1.54 inc VAT
    £1.28 ex VAT
    1 review

    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....

    View full details
    £1.54 inc VAT
    £1.28 ex VAT
    Sold out
  • Mini Illuminated Momentary Pushbutton - Blue Power Symbol - Switches
    Save 24%

    Mini Illuminated Momentary Pushbutton - Blue Power Symbol

    Generic / OEM
    £1.96 inc VAT
    £1.48 inc VAT
    £1.23 ex VAT

    DESCRIPTION This mini illuminated momentary power button with a blue power symbol is a breadboard-friendly tactile switch that has a built-in LED. ...

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    £1.96 inc VAT
    £1.48 inc VAT
    £1.23 ex VAT
    Save 24%
  • Concave Arcade Button - Blue - Buttons
    Sold out

    Concave Arcade Button - Blue

    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....

    View full details
    £1.54 inc VAT
    £1.28 ex VAT
    Sold out
  • Concave Arcade Button - Yellow - Buttons
    Save 68%

    Concave Arcade Button - Yellow

    Generic / OEM
    £1.54 inc VAT
    £0.50 inc VAT
    £0.42 ex VAT
    1 review

    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....

    View full details
    £1.54 inc VAT
    £0.50 inc VAT
    £0.42 ex VAT
    Save 68%
  • Mini Microswitch - Spdt (Offset Lever 2-Pack) - Switches

    Mini Microswitch - SPDT (Offset Lever, 2-Pack)

    Generic / OEM
    £3.36 inc VAT
    £2.80 ex VAT
    4 reviews

    DESCRIPTION This is a 3-terminal microswitch two pack, each equipped with a 20mm offset lever actuator. These switches have a great 'clicky' sound ...

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    £3.36 inc VAT
    £2.80 ex VAT
  • Concave Arcade Button - Black - Buttons
    Sold out

    Concave Arcade Button - Black

    Generic / OEM
    £1.54 inc VAT
    £1.28 ex VAT
    2 reviews

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

    View full details
    £1.54 inc VAT
    £1.28 ex VAT
    Sold out
  • Tactile Switch Buttons (6Mm Slim) X 5 Pack - Buttons
    Save 6%

    Tactile Switch Buttons (6mm slim) x 5 pack

    Generic / OEM
    £1.00 inc VAT
    £0.94 inc VAT
    £0.78 ex VAT

    DESCRIPTION Slim clicky momentary switches are standard input "buttons" on electronic projects. These are half the width of classic 6mm tactile swi...

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    £1.00 inc VAT
    £0.94 inc VAT
    £0.78 ex VAT
    Save 6%
  • Big Dome Push Button - Green With Clear Case Rim - Buttons
    Save 23%

    Big Dome Push Button - Green with Clear Case Rim

    Cool Components
    £3.98 inc VAT
    £3.07 inc VAT
    £2.56 ex VAT
    1 review

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

    View full details
    £3.98 inc VAT
    £3.07 inc VAT
    £2.56 ex VAT
    Save 23%
  • Zippyy Ball Handle Arcade Joystick - Switches
    Sold out

    Zippyy Ball Handle Arcade Joystick

    Generic / OEM
    £11.99 inc VAT
    £9.99 ex VAT
    1 review

    DESCRIPTION 4-way Pacman type arcade joystick. Heavy duty design gives this joystick a great feel! FEATURES ABS plastic and a solid alloy constru...

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    £11.99 inc VAT
    £9.99 ex VAT
    Sold out
  • 5-Way Tactile Switch - Buttons

    5-way Tactile Switch

    Generic / OEM
    £2.48 inc VAT
    £2.07 ex VAT

    DESCRIPTION Sometimes you want a small input and a single button just won't cut it. A 5-way tactile switch allows for a joystick-like interface in...

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    £2.48 inc VAT
    £2.07 ex VAT
  • Big Dome Push Button - Blue With Clear Case Rim - Buttons
    Save 23%

    Big Dome Push Button - Blue with Clear Case Rim

    Cool Components
    £3.98 inc VAT
    £3.07 inc VAT
    £2.56 ex VAT
    1 review

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

    View full details
    £3.98 inc VAT
    £3.07 inc VAT
    £2.56 ex VAT
    Save 23%
  • Tactile Buttons X4 - Buttons
    Save 22%

    Tactile Buttons x4

    Cool Components
    £6.13 inc VAT
    £4.78 inc VAT
    £3.98 ex VAT

    DESCRIPTION Colours may vary from image shown.

    £6.13 inc VAT
    £4.78 inc VAT
    £3.98 ex VAT
    Save 22%
  • Switch - 4 Way Dip - Switches
    Save 47%

    Switch - 4 Way, DIP

    Generic / OEM
    £0.72 inc VAT
    £0.38 inc VAT
    £0.32 ex VAT
    1 review

    DESCRIPTION This 4 way DIP switch has 4 slider switches and enables you to customise the behaviour of electronic devices for specific situations. I...

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    £0.72 inc VAT
    £0.38 inc VAT
    £0.32 ex VAT
    Save 47%
  • Big Dome Push Button - White With Clear Case Rim - Buttons
    Sold out

    Big Dome Push Button - White with Clear Case Rim

    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 (outside diameter) dome illuminated push button with a cl...

    View full details
    £7.99 inc VAT
    £6.66 ex VAT
    Sold out
  • Big Dome Push Button - Yellow With Clear Case Rim - Buttons
    Save 23%

    Big Dome Push Button - Yellow with Clear Case Rim

    Cool Components
    £3.98 inc VAT
    £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 (outside diameter) dome illuminated push button with a cl...

    View full details
    £3.98 inc VAT
    £3.07 inc VAT
    £2.56 ex VAT
    Save 23%
  • Breakout Board For Thumb Joystick (Bob-09110) - Buttons

    Breakout Board for Thumb Joystick (BOB-09110)

    SparkFun
    £1.85 inc VAT
    £1.54 ex VAT

    DESCRIPTION This is the breakout board for the thumb joystick. Pins are broken out to a 0.1" header and the board includes 4 mounting holes in the ...

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    £1.85 inc VAT
    £1.54 ex VAT
  • Button Pad 4X4 - Led Compatible (Com-07835) - Buttons

    Button Pad 4x4 - LED Compatible (COM-07835)

    SparkFun
    £5.77 inc VAT
    £4.81 ex VAT

    DESCRIPTION This is a translucent silicon rubber button pad with 16 buttons originally inspired by the folks at monome.org. Each button has a hole ...

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    £5.77 inc VAT
    £4.81 ex VAT
  • Button Pad 2X2 - Breakout Pcb (Com-09277) - Buttons
    Save 22%

    Button Pad 2x2 - Breakout PCB (COM-09277)

    SparkFun
    £4.68 inc VAT
    £3.65 inc VAT
    £3.04 ex VAT

    DESCRIPTION This is a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors are sold...

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    £4.68 inc VAT
    £3.65 inc VAT
    £3.04 ex VAT
    Save 22%
  • Microswitch - Spdt - Switches
    Save 71%

    Microswitch - SPDT

    Generic / OEM
    £0.48 inc VAT
    £0.14 inc VAT
    £0.12 ex VAT
    1 review

    DESCRIPTION This is a 3-terminal microswitch. These switches have a great 'clicky' sound to them with a nice tactile feel and are perfect when used...

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    £0.48 inc VAT
    £0.14 inc VAT
    £0.12 ex VAT
    Save 71%
  • Unipolar Hall Effect Switch (H501) - Component
    Sold out

    Unipolar Hall Effect Switch (H501)

    PIC
    £2.45 inc VAT
    £2.04 ex VAT

    DESCRIPTION ON when exposed to a sufficiently strong magnetic south pole, OFF when the magnetic field strength is reduced. Sensitivity is at its hi...

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    £2.45 inc VAT
    £2.04 ex VAT
    Sold out
  • Led Tactile Button - Blue (Com-10443) - Leds
    Save 21%

    LED Tactile Button - Blue (COM-10443)

    SparkFun
    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT

    DESCRIPTION This is a simple LED-illuminated tactile button with a clear cap. It's just like a basic tactile button, but it lights up blue! So now...

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    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT
    Save 21%
  • Button Pad 4X4 - Breakout Pcb (Com-08033) - Buttons

    Button Pad 4x4 - Breakout PCB (COM-08033)

    SparkFun
    £7.91 inc VAT
    £6.59 ex VAT

    DESCRIPTION This is a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors are sold...

    View full details
    £7.91 inc VAT
    £6.59 ex VAT
  • Tilt Switch - 15 Degrees - Buttons
    Save 17%

    Tilt Switch - 15 degrees

    Generic / OEM
    £2.23 inc VAT
    £1.84 inc VAT
    £1.53 ex VAT

    DESCRIPTION These operate when tilted from the horizontal position. The switch movement required to cause contact change is called the differential...

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    £2.23 inc VAT
    £1.84 inc VAT
    £1.53 ex VAT
    Save 17%
  • Right Angle Tactile Button (Com-10791) - Buttons
    Save 23%

    Right Angle Tactile Button (COM-10791)

    SparkFun
    £0.40 inc VAT
    £0.31 inc VAT
    £0.26 ex VAT
    1 review

    DESCRIPTION This right-angle tactile switch has a great 'click' to it. Also, because it's a through-hole design it's very sturdy. Mount it on the ...

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    £0.40 inc VAT
    £0.31 inc VAT
    £0.26 ex VAT
    Save 23%
  • Led Tactile Button - Red (Com-10442) - Leds
    Save 21%

    LED Tactile Button - Red (COM-10442)

    SparkFun
    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT

    DESCRIPTION This is a simple LED-illuminated tactile button with a red cap. It's just like a basic tactile button, but it lights up red! So now yo...

    View full details
    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT
    Save 21%
  • Led Tactile Button - Green (Com-10440) - Leds
    Save 21%

    LED Tactile Button - Green (COM-10440)

    SparkFun
    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT

    DESCRIPTION This is a simple LED-illuminated tactile button with a green cap. It's just like a basic tactile button, but it lights up green! So no...

    View full details
    £2.30 inc VAT
    £1.81 inc VAT
    £1.51 ex VAT
    Save 21%
  • Led Tactile Button Breakout - Leds

    LED Tactile Button Breakout

    Generic / OEM
    £1.45 inc VAT
    £1.21 ex VAT
    1 review

    DESCRIPTION This simple breakout board makes it easy to use our LED tactile switches on a breadboard, or on your next project. Please Note: Popula...

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    £1.45 inc VAT
    £1.21 ex VAT
  • Switch - Tactile 4.3Mm Spno - Switches
    Sold out

    Switch - Tactile 4.3mm SPNO

    MULTICOMP
    £0.49 inc VAT
    £0.41 ex VAT

    DESCRIPTION The MCDTS2 series Tactile Switch with SPNO (single pole normally open) contact arrangement and silver-clad brass terminals. Due to the ...

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    £0.49 inc VAT
    £0.41 ex VAT
    Sold out
  • Motorized Slide Potentiometer - 10KΩ Linear with 5V DC Motor - Component

    Motorized Slide Potentiometer - 10KΩ Linear with 5V DC Motor

    Adafruit
    £26.99 inc VAT
    £22.49 ex VAT

    DESCRIPTION This linear slide potentiometer comes with an added kick - it's not just a plain old slide pot! Underneath is mounted a slim geared DC ...

    View full details
    £26.99 inc VAT
    £22.49 ex VAT