Emisar D1S Oslon Black flat mod 340k+cd

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.

This is a rare occasion , since most people change battery from the tailcap side . Someone could add some (veeery little) medium strength threadlocker to be sure they won’t change battery from this side , and so it won’t wear off .

Yes but since the head isnt electrically connected to the driver I didnt need to change anything except reflow the LED.

I had to sand down the little centering ring for the led to get optimum focus and shave it out a bit to make the hole bigger so the black flat would fit, the black flat is a bit wider than the XP-L HI

simply put yes it is, I was expecting to have to isolate the MCPCB but I didn’t have to because of the isolation between the head and driver which made the build process a lot easier and quicker

Thanks! and thanks for the info I will check out that site you linked

precisely

originally I was going to use thermal epoxy on the bottom of the driver to isolate it but I didn’t need to because of the driver isolation, but my solution is not to unscrew the body from the head just use the tail cap which keeps the threads from ever getting worn down.

I made mine too some days ago , now I’m messing with the focus to get the optimal result :slight_smile:

Awesome! let me know the max cd you get out of yours I am curious how they compare

Thanks haha, it turned out awesome

That link is for “Automotive 5-Pin SMD T/R”….I don’t think it can reflow to your xpl mcbpc.

Arrow do have 2 -pin but not in stock. I got their email reply of 10 pieces for $21…. Seems good deal

Think I’ll pull the trigger soon :slight_smile:

That isolated head so you can use the Black Flat is already reason enough to buy a D1S. Great mod with awesome throw for such a small flashlight!

So true! Thanks and I’m glad you liked it

Nice find!!! This is great!!!..so the D1s and flat black are secretly the perfect match. I love how little spill the corona has now.

I’m still alil confused on how the head is electrically isolated. Is it simply the thick anodising emisar uses? Because I dont recall ever seeing a grommet or spacer in-between the head and body?

Definitely a match made in heaven, the thick anodization insulates the driver from the head because it’s simply push fit into the light so therefore the negative outer ring on the driver only makes contact with the body and it’s electrically isolated from the aluminum in the head, as we were saying before if you take apart the D1S from the top of the tube near the head the threads will wear off the anodizing from friction and will soon ground out to the head and ruin the connection once it wears off but you can take care of that by only unscrewing from the bottom of the tube.

Oh. Thank you Nicolicous. I scanned a datasheet, but didn't catch anything about that package. I'll add a note to my above post.

I wonder if D1 would work just as well… :slight_smile:

Oh wow just 3 or 4 days ago nearly 1000 pieces were in stock.