Interesting, do you think the extra 40 mW will make much of a difference? I was just going by the fixed 445mA current buck drivers available from SL which are probably the most convenient to set up. I've messaged Lifetime about some heat sinks as well, the ones he has look like they would be a great fit for this build I have in mind.The best info I can give is I had this BDR-209 doing 700mW ish with a G2. It is in a small pen light host but using a 12mm Dtr copper module.
Yes it heats up somewhat quickly but iv'e had for a few years and maby 10 hours total with me etching popsicle sticks.
A C6 or 501B host should really be a good step up heatsink wise. Yes I would limit it around 700mW.
Thanks for the info! What about an Osram PLTB450B, as it's readily available in module from DTR. It looks like 1.8A will reach 2.1W but I'm not sure if that's overdriving the diode too much and 1.5A would be safer for that.Even at 400 mA these diodes are still being seriously over-driven. They are temperamental diodes and they fail the harder you push them and the less heat sinking you use. I have told you what has helped with my 405nm diode builds. At least they aren't expensive diodes, so if you have to replace a few they won't cost you at lot of money. A 2+ watt M140 445nm build is also a good burner. They hold up a lot better too.
Yes that PLTB450B1 is a good one. Iv'e had one going on 4 or 5 years in a 501B host set at 1.8A.Thanks for the info! What about an Osram PLTB450B, as it's readily available in module from DTR. It looks like 1.8A will reach 2.1W but I'm not sure if that's overdriving the diode too much and 1.5A would be safer for that.
Also let me know if I should make a different thread for these questions, I know we're way off topic from Greens now, lol.