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#11125 |

The M140 is a good diode and was very popular with the diy community until the more powerful ndb7875 took that throne. Because the specs are so close, the test load should work just fine as it is described in the guide. The guide instructions should apply BUT the current setting should be set between 1.1 and 1.2 amps and voltage setting to 5 volts. The settings for the 2.8w ndb7875 are too high for the M140. I’m assuming you have your diode already housed with a lens attached right? Glad to help.I’d like to see more pics of working laser setups so please post once you’re making some smoke;)