Listing is for a single new 3.8mm Osram PL520B 120mW 520nm single mode laser diode. 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. For drop in ready units that have the diode in modules with the driver installed and glass lens see these. 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 laser 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 to save cost since they are not necessary when driving a LED. 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 and any build using it will have reduced life or even risk immediate damage to the laser diode. Also LED Driver Scope Test on it. Please do your homework or shoot me a message if confused by the many offerings of "cheap drivers" as risking an expensive diode to save on a bargain driver is just not worth it. If you do use a LED driver you do so at your own risk. Diode should be properly heatsinked and driven with a laser driver set to a no more than 300mA. Here is a list of tutorials I have made and experiments that can help give you ideas for your next project. 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) |