eBay
Listing is for a single 1.5W-2W M140 445nm blue laser diode mounted in a 12mm x 30mm copper module with leads attached. 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-1 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.

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 -



If this is your first laser build here is a great place to start.


 

Diodes are current hungry and as they heat up their internal resistance is lowered causing them to want to draw more current. Don't attempt to connect the diode directly to a fixed voltage source like a battery. You must use a laser driver with the current set to 1.8A or under or you diode will suffer thermal runaway and die. For more info on the reason for a constant current driver see this thread.



Here is the Pinout for the diode


If you are looking for a host here are some of the more popular host/heatsink kits that will work with these diodes and if you want something that is not listed in those links that I show in my tutorials below shoot me a message and I can point you in the right direction for them.;)




1.8W A-Type M140 445nm Laser Diode







This is 700mA it was just flashing between 6/7 at the time the picture was taken and I did not notice it.


















Here is it running @ 1.8A W/G-2 and a large heatsink.

Here is one of my favorite hosts. The Sirius 1-C





 

Here is a list of tutorials I have made and experiments that can help give you ideas for your next project.


 










Shipping is Free in the US
International
First Class mail "Not Tracked" Delivery estimate is 10-30 business days most falling around 15.
or
Express 5-7 day Tracked with Delivery Confirmation.(Recommended) 




*Disclamer*

By purchasing these diodes you are agreeing to the following.
- You are over 18 years of age . 

- You understand that these components that are mentioned above are dangerous when not properly assembled into a finished product. 

- You will use these as components and properly incorporate them into a finished product. 

- You will use these diodes/modules in a safe and responsible manner and for a legal purpose. 

- You are legally responsible for the use of these components, improper use of these components or their end products. 

- You are legally responsible for any injury to anybody resulting from the use of or assembly of these components or their finished products. 

- You Accept this diode/module as a COMPONENT for integration in a system of YOUR OWN design and will be legally responsible from any and all LIABILITIES These Diodes and Modules are sold solely as a component for incorporation into the customer's end products. Therefore, this diode/module is exempt from compliance with the appropriate requirements of FDA 21CFR, section 1040.10 and 1040.11 for complete products.