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That looks sleek massive big awesome host. I am sure a heavy laser could be build.
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What duty cycle does the WF-501B Heatsink allow?
What is your preferred laser setup? Which diode and driver combo?
I would be using an M140 diode from DTR and a 1.25A Diode Driver from SL
I'd say you can run that for several minutes before needing to cool off. 1.2 Amps isn't too much.
Okay thanks. So what would the correlation be between the number if amps and the duty cycle? (Just so that I can get a clearer idea for future builds
I'm afraid I cannot give you any firm formula for it, it's more of a "gut feeling" from experience from working with those things.
It's like if you've ever asked a cook how long does something take. "Until it looks about right".
If you really want to calculate stuff, the heatsink's mass if aprox. 60-70 grams of aluminium, diode's thermal power output is aprox 10 Watts and it's maximum case temperature shouldn't exceed aprox 150°C maximum, with 100°C at all times should be preferable.
Reflow soldering happens at 180°C IIRC so by the time you get there, your laser's diode's die would've desoldered from it's pedestal.