Lamp Bulb Base Sizes

Types of light bulbs bases.

Lamp bulb base sizes.

Base type screw in bulbs use a base called an edison screw or es base. 1 888 455 2800 fax 1 508 363 2900. From top left to bottom right. Edison screw es is a standard lightbulb socket for electric light bulbs.

Fluorescent pin bases miniature bipin medium bipin single pin recessed double contact 4 pin single ended 4 pin 2gx 13 axial twist lock bases 10mm gu10 10mm gx10 24mm gu24 bi pin bases 4mm g4 4mm gu4 4mm gz4 5 3mm g5 3 5mm g5 5 3mm gu5 3 5 3mm gx5 3 5 3mm gy5 3 6 35mm g6 35 6 35mm gy6 35 6 35mm gz6 35 8mm gy8 8 5mm g8 5 9mm g9 9mm g9 pin. The first letter designates the shape or form of the base and the number represents the width of the base normally in millimeters. For bulbs powered by ac current the thread is generally connected to neutral and the. Candle bulbs this group of bulbs and candle leds is used in chandeliers outdoor lighting and small accent lamps.

This base was developed by thomas edison for the first light bulbs and is still in use today. For example a lamp with a medium base or e26 measures 26 millimeters 1 02 inches at its widest point on the base. The bulbs have right hand threaded metal bases caps which screw into matching threaded sockets lamp holders. The following is a list of common basic types presented on a size lamps.

A further explanation of the light bulb base sizes you can look at the letter number references e12 e17 and e26 to help understand a bulbs base style and size. It was developed by thomas edison patented in 1881 and was licensed in 1909 under general electric s mazda trademark. Bulbs with these bases are the most popular of all screw base bulbs. Vintage light bulbs add a decorative touch to the conventional light fixtures in your home.

E12 north america e11 in europe intermediate. Regardless of style the diameter of a lamp is expressed in millimeters. Led light bulbs we offer energy efficient money saving led bulbs in a wide range of base types for many different applications. Globe g bulbs have a full round shape and are available in various sizes.

E17 north america e14 small es ses in europe medium or. View all led bulbs. Other decorative light bulbs include candelabra bulbs that complement chandeliers sconces and ceiling fans. Also known as edison light bulbs they are distinguished by the antique style filament in the center these types of light bulbs come in a variety of sizes and shapes.

Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size.