12 volt bi-pin light bulb types

Updated March 24, 2017

Bi-pin bulbs are tiny light bulbs with two prongs and specific pin spacing. They are identified by the space between the pins, the wattage and a voltage of between six and 120 volts. Halogen bi-pin bulbs are also known as JCD or JC lamps and are often used in display lighting or task lighting. The 12 volt LED and halogen bi-pin bulbs provide high illumination in a small space.

12 Volt LED Bi-Pin JC G4 Base

The 12 volt LED bi-pin JC G4 base light bulbs come in several wattages and have an average life of 35,000 hours. G4 indicates the pin spacing, which is 4mm (0.16 inch). The 12 volt LED bi-pin JC G4 can be used to replace some bi-pin halogen bulbs.

12 Volt Bi-Pin Halogen JC G4 Base

The 12 volt bi-pin halogen JC G4 light bulbs also have a pin spacing of 0.16 inch and have a 2,000-hour average rated life. Don't touch the glass when installing this bulb, as the chemical reaction with your skin oils may shorten the lamp life. The halogen JC G4 usually comes in a plastic container that can be used to install the bulb.

12 Volt Bi-Pin Halogen JC G6.35 Base

The 12 volt bi-pin halogen JC G6.35 base light bulbs have a pin spacing of 6.35mm (0.25 inch) and fit in wider sockets than the G4. This halogen bulb is also known as the GY5 and has an average rated life of 2,000 hours.

12 Volt Bi-Pin Halogen Axial Reflector G6.35 Base

The 12 Volt bi-pin halogen axial reflector light bulbs are designed for applications requiring a directed beam. Check the voltage on this bulb before buying it, as some 120 volt halogen lamps have the same 6.35mm (0.25 inch) pin spacing. The 12 volt bi-pin halogen axial reflector bulb features a small reflector integral to the lamp and has a 2,000-hour average rated life.

12 Volt LED Caravan 1.75 Watt Bi-Pin G4

The 12 volt LED 1.75 watt G4 caravan bi-pin light bulb is a suitable replacement for 12 volt LED DC fittings and 15 watt bi-pin halogen globes in caravans and boats. Using this bulb reduces power drain on you battery, and it emits light in 360 degrees. This bulb has an average lifespan of 50,000 hours.

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