BEK Electrolytic Capacitor mounted on a yellow baseplate with sockets to accommodate the connection of 4mm plug leads. Excellent for component investigation and general circuit work.Capacitor: 100µF 25V Electrolytic WARNING: This device stores electrical energy in an electric field and can become harmful if it is not used appropriately. Electrolytic capacitors are polarised devices. The voltage connected to the anode (+) must be higher than the voltage connected to the cathode (-). If a voltage is connected in reverse polarity the component will fail; this may cause overheating and explosion.