UNIVERSAL-SOLDER Electronics Ltd
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Laser Diode 5mW 650nm
Glen Leinweber (verified owner) – December 13, 2020
An internal 91 ohm series resistor limits current to the laser diode (which consumes about 2V). Operating current is about 30mA with a 5V supply. Very simple: Red wire to +5V, Blue wire to 0V. Rotating lens holder can focus the beam. Lens quality could be better, but for this price, a very good deal.
m.p (verified owner) – May 1, 2021
Picked up a few of these recently to use with some homemade light pipes. So far they’ve all worked great, don’t heat up, and seem to play nicely with a PWM signal. Good buy.
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