Fluorescent Bulbs Base Types

Linear fluorescent tubes are the most common type of fluorescent lamps.

Fluorescent bulbs base types.

The common terms are medium intermediate candelabra and mogul. Also what is the shape of your bulb. 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. This type of fluorescent tube lighting is the most popular because of its high cri and many color temperature options.

Connects to a medium bi pin g13 base. E obviously is for edison. 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.

This is the most common light bulb base that you can buy and is used in hid cfl ccfl halogen and incandescent light bulbs. Some common bulbs that use this base are appliance bulbs or desk lamps. For alaska hawaii the base rate is 27 59 and surcharges may apply for larger orders. T12s are 1 5 inch diameter.

T5 fluorescent bulb 13 watt from ge pin spacing 5 mm. However because the light industry likes mysterious codes you may also see e26 e12 e39 etc. The most commonly available is the t8 bulbs. Look at your fixture to determine its base type.

Connects to miniature g5 base. Some will have a recessed double contact. Look at your fixture to determine its base type. 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.

Medium standard base code. 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. 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. 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.

There are three common sizes shown in the chart the below. 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. Pin type bases are normally used for track lighting landscape bulbs. All fluorescent lamps use the same technology but there are several different variations and sizes.

Frequently fluorescent bulbs will have either a single pin or bi pin two pin base type. The difference is in the diameter.