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6.35mm pin spacing, commonly used in pendants, desk lamps, accent, display, and general lighting.

Click to read more about the GY6.35

Brief history:

The bi-pin was created by Canadian inventor Reginald Fessenden working for Westinghouse in the late 19th Century when Thomas Edison would not allow another electrical company the right to use his screw-base light bulb design. The bi-pin was then patented to overcome this restriction and provide power to the 1893 World’s Fair in Chicago. In modern times, bi-pins are used in halogen fixtures and some types of fluorescent lights.

Under the IEC code system A GY6.35 base code represents a bi-pin base with a 6.35mm pin spread and a 1.25mm-diameter pin. The difference between a G6.35 and a GY6.35 lamp base is the diameter of the pins. Pins can be placed closer together to prevent over-lamping, which is when a high-wattage bulb is inserted in a socket made for a lower-wattage LED, heating up the lamp housing and causing a fire hazard. Standard GY6.35 LEDs operate on 12V DC voltage.

How they’re used:

The GY6.35 bases are normally used for small halogen bulbs. The GY6.35 LED is used in workspace lamps, pendants, and accent lights like task lights and recessed lights. These GY6.35 LEDs are also used for: Floor lamps, under-cabinet lighting, chandeliers, ceiling lights, track, and studio lighting. GY6.35 light bulbs are used for smaller lighting systems with low voltage power supplies available.

Why you want them:

GY6.35 LED bulbs are replacements for halogen bulbs. GY6.35 LED bulbs (12V) are energy-efficient since they use less power than halogen lights. They also don’t release as much heat as halogens. The average life of a GY6.35 light bulb is over 25,000 hours and doesn’t contain any toxic chemicals that can harm your health.

You can decide on the light intensity of your GY6.35 light bulb. EmeryAllen supplies a wide range of LED lights. Generally, people focus on wattage when they measure the brightness of a bulb. However, it’s different for LED bulbs. The actual brightness of LED bulbs is measured in lumens. For example, a 2.4w GY6.35 LED bulb with 150 lumens produces a similar light intensity to a 20w standard light bulb. GY6.35 LED bulbs are also dimmable, allowing you to adjust the light intensity of a room for the ideal ambiance.

GY6.35 Halogen bulbs can be replaced with GY6.35 LED bulbs easily. There are a few things to consider when replacing your halogen light:

Voltage and Transformer:

A GY6.35 LED bulb operates on a 12V DC. While the mains voltage around the world is 120 or 220-240 volts, you cannot directly connect the GY6.35 led with this voltage. You would need a transformer to convert the voltage down to 12V, though existing 12V fixtures would have accounted for this.


While replacing 12v halogen lights with GY6.35 LED bulbs 12v, you must ensure that the GY6.35 light bulbs are compatible with the lighting fixtures, and not a different style 12V bulb.


Do not forget to check the wattage of the fixture where the halogen lights were installed. Take note of your halogen wattage and find a compatible GY6.35 LED at EmeryAllen. For example, a 20-Watt halogen bulb should be replaced by a 2-4 Watt GY6.35 LED.

If you have any questions about our GY6.35 bulbs or our other products, feel free to contact us.