New VirEnce MCPCB for E17/E21/119/144/233U

That, I can’t tell you yet :wink:

Ever wondering why this budget friendly Sn96,5Ag3,5 with superior thermal conductivity 78 W/M.K is not so popular?
Here’s the answer: http://www.psma.com/ul_files/forums/leadfree/aim_lead_free_guide.pdf
The short answer is it has somewhat troublesome wetting ability. Not a good thing for automated soldering. But for us who really likes to spend hours just to get perfect reflow, this should not be a major problem. The jump from ~50 W/M.K to 78 W/M.K is indeed worth the hassles.

- Clemence

Eye candy

Nice render, time for and avatar picture change?

Ah, Forgot that. Thanks Jos

The PEEK screw and 12 W/M.K thermal pad samples are on their way to my workshop……
Will be a great chrismast gift!

- Clemence

Any updates on the PCBs and screws?

The screw samples are still on holiday trip to my country. Just received the expensive thermal pad samples this afternoon.
12 W/M.K 0,5mm thick, not bad eh?

0.5mm thick copper tracing??

OMD, I wish… :smiley:
No, it’s the thermal pads to insulate the MCPCB from the base

Ah, completely mistunderstood it then, or it was wishful thinking :slight_smile:

FYI,the next VirEnce will be 3 oz thick minimum.

I’m an SI person, had to look that up: 3 oz = 0.1mm sounds good :slight_smile:
I could not find back what the copper thickness of my 119 boards are, but a common thickness for Kerui seems 0.036mm, that makes your tracing 3 times as thick.

I’m an SI person too. It’s just Oz is a universal unit used in many copper tracing industries. Yes, It was hard to convince them to make 3 oz for me. I had to insist on it (at additional charge). I haven’t place the order yet, even though I made them busy for weeks :smiley:
They have one of the best customer service in the industry.

Great, thanks!
When will you get samples of the PCBs?

Later when the high season ended I guess. Too many unexpected expenses for now :wink:

The samples just arrived


Features:

  • PEEK screw: continuously usable up to 248C (480F). Resist most chemicals (highly resistant to salt, acid, and alkali)
    Datasheet: PEEK screws

- Thermal pad: thermal conductivity12 W/M.K; thermal resistance 0,12 C/W; electrically insulator; compressible down to 30% (0,5mm down to 0,15mm)
Datasheet: TG-X

Estimated price

- 21mm x 0,5mm thermal pad: USD 5 - 5,2/pc

- 17mm x 0,5mm thermal pad: USD 3,7 - 3,9/pc

  • M3 x 0,5 x 8 PEEK screw: USD 2,8-3/pc

- Clemence

Any updates?

Not yet. This is harder than I though. But there’s a good progress going on

Thanks, Clemence. My 144a build is all ready to go minus the board. Hoping that everything will go smoothly and they will be available by the end of February/early March.