Fluorescent Bulbs Base Types

All fluorescent lamps use the same technology but there are several different variations and sizes.

Fluorescent bulbs base types.

T5 fluorescent bulb 13 watt from ge pin spacing 5 mm. For alaska hawaii the base rate is 27 59 and surcharges may apply for larger orders. Frequently fluorescent bulbs will have either a single pin or bi pin two pin base type. Certain longer fluorescent led tubes will be assessed a shipping surcharge.

The most familiar is the edison screw base found on most incandescent bulbs and many halogen compact fluorescent hid and now led bulbs. Compact fluorescent plug in bases 2g7 2gx 7 2g11 g23 g24d 2 g24d 3 g24q 1 g24q 2 g24q 3 gx23 gx23 2 gx24q 1 gx24q 2 gx24q 3 gx24q 4 gx24q 5 miniature automotive bases. Lamps are typically identified by a code such as fxxty where f is for fluorescent the first number xx indicates either the power in watts or length in inches the t indicates that the shape of the bulb is tubular and the last number y is the diameter in eighths of an inch sometimes in millimeters rounded up to the nearest millimeter. This type of fluorescent tube lighting is the most popular because of its high cri and many color temperature options.

Medium standard base code. The most commonly available is the t8 bulbs. This is to cover all of the additional shipping materials that are needed to ensure a safe. However because the light industry likes mysterious codes you may also see e26 e12 e39 etc.

Look at your fixture to determine its base type. The common terms are medium intermediate candelabra and mogul. There are three common sizes shown in the chart the below. T8 lights are a good choice for an adjustable lighting system because of their color temperature range from a soft yellow white to bright daylight.

T8 fluorescent bulb 32 watt pin spacing 13mm sold in a wide range of color temperature and light output in lumens straight or u shaped. T12s are 1 5 inch diameter. Look at your fixture to determine its base type. E obviously is for edison.

Pin type bases are normally used for track lighting landscape bulbs. Most common light bulb uses including lamps recessed flush mount flood lights are going to have one of the first three base types shown above. Connects to a medium bi pin g13 base. Connects to miniature g5 base.

Some common bulbs that use this base are appliance bulbs or desk lamps. By eliminating bulbs that don t match your base type you are on the right track to finding the right type of fluorescent light bulb. The difference is in the diameter. For shipments to canada you can add some items to your cart to determine the shipping rate.

This is the most common light bulb base that you can buy and is used in hid cfl ccfl halogen and incandescent light bulbs. You can find this base on bulbs such as the t6 s11 and r12 but you will have to do a lot of searching to find these bulbs.