Listing is for a single 2W M140 445nm blue laser diode mounted in a 12mm x 30mm copper module with leads attached. The M140 projector yields two types of diodes the A-Type and the M-Type. The A-Type land between 1.5W and 2W and the M-Type do 2W+. Some sellers don't bother sorting and just leave it as luck of the draw for the customer. If the listing does not state if it is an A-type or M-type then it is most likely a random pick.The copper module upgrade provides a huge
improvement in thermal
conductivity over the standard brass module for moving the heat away from the diode to your heatsink which gives a much more stable output from the diode. Please Note this module comes with an acrylic lens in it to keep dust out. It can not handle the power
this unit can put out. It will keep contaminates out of the
module until you are ready to put yours glass lens in. Replace with your glass lens
of choice before powering the module. The best options are the Aixiz
405/445 Glass
Lens or the 405 G-2 Lens. If you need a lens with the unit I do offer this unit in a combo with a three element or with the G-2. See my other listings.
Save yourself the headache of pressing and soldering. Just add host, heatsink, glass lens and proper laser driver set to no more than 1.8A.
Don't attempt to connect the diode directly to a fixed voltage source like a battery. The diode requires a proper laser driver to operate. I offer a fixed X-Drive laser driver set to 1.8A for this diode. You can find it here.
I also have options for this diode in modules with the driver installed see these
If your application is for CNC Engraving check out my CNC page with lots of links to tutorials and recommend parts, software and modulating drivers suitable for CNC.
There are many other proper laser drivers but be careful a lot of sellers here are offering LED drivers as a laser driver which can damage or cause shortened life to the diode. LED drivers are not laser drivers. LED's are tough as nails but laser diodes are much more sensitive and need extra features like soft start, overshoot protection and a very low noise output that are standard on laser drivers but not included on LED drivers. I have seen a a few tutorials for building a "cheap laser" with this LED driver but it is a bad idea as I see it causing a lot of diode deaths. If you do use a LED driver you do so at your own risk.
Wire assignment is:
Red +
Black -