What do the numbers on bulbs mean?

The code number of a bulb consists of a letter or letters followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. The mosts commonly used household bulb is the A-19. The bulb is “A” type and the diameter would be 23/8″.

What does BC mean in bulbs?

With its familiar “push and twist” action, the “bayonet cap” (also known as BC or B22d cap) is used on most regular light bulbs. It is 22mm in diameter and with two locating lugs.

What are 1141 bulbs used for?

The SYLVANIA 1141 Long Life Mini Bulb makes a perfect direct replacement solution for directional lighting including parking, turning, and backup lights.

How do I identify my bulb?

Bulbs shapes have an alphanumeric code. The letter tells you the general shape of the bulb and number tells you the width or diameter of the largest part of the bulb in eighths of an inch. For example, the common and well-known standard light bulb for a table lamp is also referred to as an “A19”.

Are BC bulbs being phased out?

Light Bulb Technology Incandescent bulbs and halogen bulbs have now been phased out and are no longer being manufactured, so you won’t be able to buy these any longer. LED light bulbs are your best course of action as they are the most energy-efficient and last the longest.

What are the lumens of a 1141 bulb?

For example, if you are replacing an 1141 bulb, the chart above shows the average output of an 1141 is 142 lumens.

How do I know what size light bulb to get?

Bulb sizing is very straightforward and simple, it is based on the diameter of the bulb at its widest point, measured in eighths of an inch (⅛”). For example, the designation “T12” indicates a tubular bulb that is 12 eighths of an inch (12/8”) in diameter (or 1 ½”).

Is B22 standard bayonet?

B22 Bayonet Bulbs This is one of the most common bases for ‘Type A light bulbs’ in the U.K. A bayonet fitting bulb has 2 pins that stick out of the side, and has a base diameter of 22 mm.