Contact Us

TEL: +86-571-89285568
Fax: +86-571-88830060

Address: NO.111 Changda Road,Yuhang Economic Develpoment Zone,Hangzhou,China

Home > Knowledge > Content
Why is a bulb called A19 and A60 at the same time
Jan 25, 2018

Why is a bulb called A19 and A60 at the same time

  Many people who are just know the led bulb light will have a question about the name of the bulb.

Why is a bulb can be called two different name, and how these two name connected?

Here is the answer that will help you much.

Let's take the A19/A60 for example.

In the led lighting industry, A19 is usually used at the US market, and A60 are used at europe market.

19 stand for that 19 times of 1/8 inches, which when transferd to mm unit, it will become 60mm.

Let's calculate!

        19 * 1/8 * 25.4 ≈ 60mm

That't why a A19 bulb can also be called A60 bulb.

So on and so forth, G25 called G80, G30 called G95, G40 called G125.

Any further questions, please feel free to contact us.

Zhejiang Z-Light Optoelectronics Co., LTD, a professional LED filament lights manufacturer in Hangzhou, China.

Welcome to visit our factory!

Previous: LED filament Manufacturing introduction

Next: What is an led filament bulb