Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

You answered your own question, B4 works in combination with mcpcbs which have MOSFET, A4 works with standard mcpcbs like most other drivers.

https://led4power.com/product-category/mcpcbs-dtp-copper/3030-osram/

New 3030 DTP boards in 16mm and 20mm size, made specially for Osram white flat LEDs, but Osram has some other high power LEDs in that size too.

Reason for these boards over XP/3535 boards is that with XP boards white flat LED like to slide on one corner during reflow causing off-centered LED if it's not re-centered during reflow with tweezers.

For small qty this may be ok, but for me it was a PITA. With new 3030 boards there is no such problem since footprint is exact like it should be and LED is always nicely centered.

These PCBs have factory lapped bottom surface and they are fully gold plated, so price is little bit higher than nickel plated PCBs. Also PCBs in panel are separated by double V-cut for nicer and cleaner cut without notches, this also adds ~10-15% cost.

From now on I will only have white flat LEDs soldered on 3030 PCBs, I already changed listing for 20mm white flat 1 and 2, and will do the same for 16mm after few last pcs soldered on XP16 PCBs are sold.

:sunglasses:
I wish all those nice new products came in your shop all at once, I keep ordering things. Luckily shipping is very reasonable.

I was informed to post here to ask about X6 heatsinks

Get ready to order some 4040 PCBs for when the boost HX arrives :stuck_out_tongue:

Still need some time for release.

Thanks for sharing the link to that old thread!
Indeed a very good idea. :+1:

Hey that’s great!
I have a bunch of 1st generation Oslon squares that could use dedicated 3030 boards.
I will order some next time.

Nice! And Osram 850 and 940nm should be fine withe these :+1:

I demand mcpcb with centrally positioned SFT solderting pad and will not move from this thread until I get what I want :stuck_out_tongue:

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Man how I wish you got the FA1, FA4, FD1, or FD4 tint bin. I would have bought a bunch presoldered on your mighty mcpcbs for sure. Too bad the FC1 tint is above the BBL and I can’t get used to any emitter with greenish tints.

Wow...J5 bin, that’s good! FD1 instead of FC1 as tint bin would have been the icing on the cake. I‘m curious if there’s any green shift in those ones.

Unfortunately, you can't choose tint bins so tightly, so it's pure lottery.

Just saw your store L4P, the lighted tail switches are out of stock! Any idea when they’ll be back, mate?
Thanks!

I'm waiting for omten switches.

I’ve been hanging out waiting for the subzero switches :wink: Any late Xmas ideas on the way…?

Thank you !!! I noticed the store is closed, so I’ll wait for the reopening and for the switches to arrive to order some things! :+1:

Yes, store is now closed till 01/01/2019.

Have some rest meanwhile :wink: