The laser diode pinout is the guide for us to how to connect the diodes. It may be different according to the laser diode module number. You can see it the following drawing. The 1 is LD anode +, the 3 is LD cathode – , the 2 is to connect the laser diode case.

The lengths of the Pin diodes are different , but some of the applications need shorter pin lengths, then we cut them to shorter.

When we see these cut pin laser diodes, then they’re used second hand laser diodes. They’re not Totally brand New .

All Kinds of Laser Diodes at BeamQ

2 pin diodes:

Some of the 2 pin diodes are made by 3 pin diodes , just cut off 1 pin .

3 pin diodes:

Most of the laser diodes are 3 pin, most of the wavelengths and output powers have 3 pins leads.

4 pin diodes

Some of the laser enthusiasts get the laser diodes for the DVD. how to get know the dvd laser diode pinout ? Most of the dvd laser diodes are 405nm, search the module number on google, and you will find the datasheet for the laser diodes, then you can find the dvd laser diode pinout in the datasheet.

4 pin laser diode pinout，

4 pin flat laser diode pinout，

dvd player 4 pin laser diode pinout

Video Guide about laser diode pinout .

If you’re searching laser diode pinout, you may get more information about how to build a laser here at instructables .