3.5W NDB7A75 445nm Laser Diode AKA NDB7K75

NDB7A75 3.5W 445nm Laser Diode

3.5A Recommended Operating Current 4A Max.

3.5W NDB7A75 445nm Laser Diode

These diodes are comfortable running @ 3.5A for a very stable continuous duty cycle application output and 4A for shorter duty cycle applications.

4.5A would be an absolute max for shorter duty cycle application with a lower life expectancy.

Here is a quick video.

Community Testing Thread

The divergence of the diode Is about 2X that of the M/A140 and NDB7875 diodes. 

But about 1/2 that of diodes like the NUBM44-V2 and NUBM08's.

This diode is my favorite for high power 445nm-455nm blue diodes.

Now on to some more power tests.

DTR-3E-B Three Element Glass Lens

DTR-G-2 High Transmission Single Element Glass Lens

Copper Modules Are 

C1100 99.9% Pure Copper

Lens Threading M9X0.5mm

12mm Copper Modules

20mm Copper Modules

25mm Copper Modules

20mm and 25mm module Driver Shelf Back Half

Machined pocket provides a shelf that can be used to thermally bond a compact laser driver.

Max dimensions 16.65mm X 12.00mm X 7.00mm

Drivers I carry that fit: ACS4500BU, ACS5500BU, ACS1500SE, LDSE500, Flexdrive, Nano, SXD Super X-Drive,

Drivers that can be thermally sinked by flat mounting.

20mm and 25mm Copper Modules W/Driver

Units can be powered with any 6.5V-12V Power Source(4A+ Discharge Capable) 

Examples:Variable Power Supply, 9V/12V 4A+ Wall Adapter, Two 3.7V Li-Iion's In Series, ect...

Power & Stability Test DTR-G-2, 20mm Version Mounted In SK-20 XYZ Heatsink

PWN/TTL

Modulation Frequency: Up to 1kHz 

Enable Pin is High "ON" Minimum 1.6V to a MAX of 12V

Enable Pin is Low "OFF" 0.6V or lower

12V MAX the enable pin can take.

CNC Engraving/Cutting. 

Best option DTR-G-2 with a 30mm working distance from the aperture of the laser to the work with good ventilation.