better mouse bites

Watch out for Lyme disease - so be sure to disinfect the mouse bits prior to use...

John ;-#)#

All our mice go through a solvent wash.

That does indeed solve the problem...

John ;-#)

• First impression is the PCB material is crappy: i have never seen laminations like that before, and so many...

We did something similar when a memory chip went obsolete... trouble was that after reflow soldering, there were 'dry joints' on some of the 'pads' to the main pcb. Hand soldering was not an option as we had to do thousands... In the end, bad joints had to be touched up. Could be we missed some and they would have ended up as early field failures......

It's a perfectly fine 4-layer board from Cirexx. It's fabbed as a panel array, and we break apart the little tiles after assembly. I think we'll arrange to test and glob-top them before break-apart too.

Gotta make a test fixture with pogos.

We'll hand solder these baby boards to the main boards. I don't want to re-reflow them. This is high price stuff, and there are only 10 connections, so it's no big deal.

The real motivation here is to not have to rework a blown GaN fet; just replace the baby board. The BGA fets are fragile, so need to be glob-topped, so are impossible to rework.