I just finished up modding my D1S with a Oslon black flat , all i did was reflow the LED on to the xp board that came in the light. I put the MCPCB back into the light, shaved down the centering ring to fit the new LED and viola it worked!, it now produces 345kcd and ~707 lumens comapred to the 140kcd and 1200 lumens. LAZER BEAM TIME
EDIT: I just read here that there are what sounds like higher binned ones at mouser and digikey, but I can't seem to find them. I can't seem to match up the manufacture's part number to the datasheet. The listed specs appear to indicated the highest light output, but also highest Vf. They are only showing max's though. So not sure about that.
EDIT2: Please disregard the struck out text. Member Nicolicous alerted in Post 31 below that this is a 5-pin package that may not be compatible with XP based.
The explanation : the driver’s ground , isn’t connected (electrically) to the head , but only the tube is , that carries the Battery (-) .
That allows the head to be connected with Led (-) without causing issues on the driver .
Annnnnd thank you very much for that clear explanation, I couldn’t for the life of me figure how it was possible.
You couldn’t do that in, say, a C8…
Now I have to order some black flat :person_facepalming:
True about the head being isolated from battery negative. I didn’t think of that. But I wouldn’t necessarily rely on this method of isolation because if the anodization of the tube threads wears off it’s no longer isolated.
A method to isolate the MCPCB from the shelf that’s worked well for me when I was experimenting with making XD16 arrays is using narrow strips of kapton as spacers under the MCPCB. A couple small strips (~2mm x 15mm) near opposite edges of the MCPCB prevent any metal to metal contact. Put the strips on the MCPCB and use ceramic thermal paste as usual. The kapton thickness is only 50microns so it’s practically not adding any thickness to the thermal paste junction.