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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.
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Big Dome Push Button - Red
Cool Components£7.99 inc VAT
£6.66 ex VATDESCRIPTION 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 VATSold out -
Logic Level Converter Bi-Directional (BOB-12009)
SparkFun£2.70 inc VAT
£2.25 ex VATDESCRIPTION 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...
View full details£2.70 inc VAT
£2.25 ex VATSale -
Digital RGB Addressable LED Weatherproof Strip 60 LED -1m (Adafruit NeoPixel Compatible)
Cool Components£11.39 inc VAT
£9.49 ex VATDESCRIPTION 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...
View full details£11.39 inc VAT
£9.49 ex VATSale -
Electronic Parts Kit
Cool Components£19.99 inc VAT
£16.66 ex VATDESCRIPTION This massive kit has 280 parts! The electronic parts kit is a comprehensive selection of components for making a wide variety of elect...
View full details£19.99 inc VAT
£16.66 ex VATSale -
Toggle Switch and Cover - Illuminated (Red) (COM-11310)
SparkFun£3.36 inc VAT
£2.80 ex VATDESCRIPTION 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...
View full details£3.36 inc VAT
£2.80 ex VATSale -
Momentary Push Button Switch - 12mm Square
Generic / OEM£0.46 inc VAT
£0.38 ex VATDESCRIPTION This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it 'clicks' really...
View full details£0.46 inc VAT
£0.38 ex VATSale -
Big Dome Push Button - Blue
Cool ComponentsOriginal Price £7.99 inc VATCurrent Price £3.07 inc VAT
£2.56 ex VATDESCRIPTION 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...
View full detailsOriginal Price £7.99 inc VATCurrent Price £3.07 inc VAT
£2.56 ex VATSave 62% -
Rotary Encoder - Illuminated (RGB) (COM-10982)
SparkFun£5.23 inc VAT
£4.36 ex VATDESCRIPTION Rotary encoders can be used similarly to potentiometers. The difference is that an encoder has full rotation without limits (It just go...
View full details£5.23 inc VAT
£4.36 ex VATSale -
Big Dome Push Button - Green
Cool Components£7.99 inc VAT
£6.66 ex VATDESCRIPTION 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 VATSale -
5V Step-Up/Step-Down Voltage Regulator S9V11F5
PololuOriginal Price £22.67 inc VATCurrent Price £16.38 inc VAT
£13.65 ex VATDESCRIPTION The 5V switching step-up/step-down voltage regulator S9V11F5 efficiently produces 5 V from input voltages between 2 V and 16 V. (Note:...
View full detailsOriginal Price £22.67 inc VATCurrent Price £16.38 inc VAT
£13.65 ex VATSave 28% -
TCA9548A I2C Multiplexer (ID: 2717)
Adafruit£6.91 inc VAT
£5.76 ex VATDESCRIPTION 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...
View full details£6.91 inc VAT
£5.76 ex VATSale -
Resistor Kit - 1/4W
Cool Components£13.00 inc VAT
£10.83 ex VATDESCRIPTION The Cool Components Resistor Kit contains over 400 0.25W resistors in a range of different values all packed in a reusable component bo...
View full details£13.00 inc VAT
£10.83 ex VATSold out -
White LED Backlight Module - Small 12mm x 40mm
Generic / OEMOriginal Price £1.79 inc VATCurrent Price £0.25 inc VAT
£0.21 ex VATDESCRIPTION These pretty strips of light are plastic diffused backlights, often seen in LCD displays. Normally they're tucked behind the LCD and sh...
View full detailsOriginal Price £1.79 inc VATCurrent Price £0.25 inc VAT
£0.21 ex VATSave 86% -
Rotary Potentiometer - 10k Ohm, Linear
Generic / OEMOriginal Price £1.98 inc VATCurrent Price £1.33 inc VAT
£1.11 ex VATDESCRIPTION An adjustable potentiometer can open up many interesting user interfaces. Turn the pot and the resistance changes. Connect VCC to an ou...
View full detailsOriginal Price £1.98 inc VATCurrent Price £1.33 inc VAT
£1.11 ex VATSave 33% -
5050 RGB LED with WS2812B Driver Chip
Generic / OEM£0.36 inc VAT
£0.30 ex VATDESCRIPTION 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 ...
View full details£0.36 inc VAT
£0.30 ex VATSale -
Switch - Mini SPDT Power
Generic / OEM£0.79 inc VAT
£0.66 ex VATDESCRIPTION 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...
View full details£0.79 inc VAT
£0.66 ex VATSold out -
DC Barrel Jack Adapter - Female (PRT-10288)
SparkFun£2.70 inc VAT
£2.25 ex VATDESCRIPTION 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...
View full details£2.70 inc VAT
£2.25 ex VATSale -
Adjustable 4-12V Step-Up/Step-Down Voltage Regulator S18V20ALV
Pololu£23.99 inc VAT
£19.99 ex VATDESCRIPTION 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 ...
View full details£23.99 inc VAT
£19.99 ex VATSale -
Big Dome Push Button - Yellow
Cool ComponentsOriginal Price £7.99 inc VATCurrent Price £3.07 inc VAT
£2.56 ex VATDESCRIPTION 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 detailsOriginal Price £7.99 inc VATCurrent Price £3.07 inc VAT
£2.56 ex VATSave 62% -
Big Dome Push Button - White
Cool Components£7.99 inc VAT
£6.66 ex VATDESCRIPTION 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 VATSold out -
Concave Arcade Button - Red
Generic / OEM£1.54 inc VAT
£1.28 ex VATDESCRIPTION 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 VATSold out -
Switch - Mini Tactile PCB
Generic / OEMOriginal Price £0.34 inc VATCurrent Price £0.19 inc VAT
£0.16 ex VATDESCRIPTION Miniature Single Pull Single Throw switches. These are high quality momentary on switches. Perfect as a tactile reset switch. Mounts di...
View full detailsOriginal Price £0.34 inc VATCurrent Price £0.19 inc VAT
£0.16 ex VATSave 44% -
Basic SPDT Relay Carrier with 5VDC Relay (Assembled)
Pololu£5.39 inc VAT
£4.49 ex VATDESCRIPTION The Pololu basic relay carrier modules allow simple control of a single-pole, double-throw (SPDT) switch from low-voltage, low-current ...
View full details£5.39 inc VAT
£4.49 ex VATSale -
Voltage Regulator - 5V
Generic / OEMOriginal Price £0.35 inc VATCurrent Price £0.16 inc VAT
£0.13 ex VATDESCRIPTIONThis 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 ...
View full detailsOriginal Price £0.35 inc VATCurrent Price £0.16 inc VAT
£0.13 ex VATSave 54%