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Passive

Passive components: resistors, capacitors, diodes, LEDs, potentiometers, fuses, crystals, buzzers, speakers, relays, magnets and heat sinks.

The everyday parts on every circuit board: 1/4W resistors from 10Ω to 1MΩ, ceramic and electrolytic capacitors, 1N4007, 1N4148 and Schottky diodes, 5mm and RGB LEDs, potentiometers and presets, glass and car fuses, 16MHz crystals, buzzers, small speakers, PCB relays and heat sinks.

Choosing values

Pick resistors by resistance and power rating, capacitors by capacitance and a voltage rating above your circuit’s voltage (electrolytics are polarised, so mind the stripe), and diodes by current and reverse voltage. Browse diodes, LEDs, potentiometers, capacitors, fuses, speakers and crystals and buzzers.

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