Electronics Forum: crazing (Page 1 of 2)

Crazing or Delam - Thermal or Mechanical?

Electronics Forum | Thu Jun 18 07:04:12 EDT 2009 | davef

We'd call it delamination and ask our board fabrictor to come over and -off replacement baords.

Crazing or Delam - Thermal or Mechanical?

Electronics Forum | Thu Jun 18 00:16:47 EDT 2009 | boardhouse

Do you know what material type and brand was used. example: Isola IS410 Regards, Mike

Crazing or Delam - Thermal or Mechanical?

Electronics Forum | Fri Jun 19 07:28:56 EDT 2009 | mhunter

Thank you for your responses Davef and Boardhouse. The material used is Iteq Corporation IT-180. I performed more testing yesterday and found the following: I could insert Berg Pins into the assembly at various locations or a Pem. None of these

Immersion Ag

Electronics Forum | Sun May 12 22:01:44 EDT 2002 | ianchan

Hi mates, since I read about this immersion Ag plated PCB, was wondering if its so damm good, why so few people are using it? and why so long to market its PCBA application-virtues? feedback from bouncing this question around is Ag is prone to corr

Re: Measling

Electronics Forum | Mon Jul 12 13:06:32 EDT 1999 | Earl Moon

I had parts replaced on SMT PWBs and the repair created measling defects. Reliability Question: Q1. Can measling be aggrevated or grow over time due to temperature cycling and moisture. Customer environment is -62C to +85C. Thank

The next wave

Electronics Forum | Tue Aug 06 17:14:33 EDT 2002 | melo_guy

I thought this would be a good place to post to get input from the "trenches" as to what is going to be the next consumer fad? It seems like the market is in need of something new to instigate future consumption. I work for an electronic component

uv stable conformal coating

Electronics Forum | Tue Jan 13 16:40:03 EST 2004 | Jacob Lacourse

Hi folks, I have a conformal coating application where I need the coating to be UV stable for a number of years without any crazing or cracking of the coating. I have looked for such a coating and have come up empty handed. Much of the circuit boar

Re: Measling

Electronics Forum | Thu Oct 15 14:23:31 EDT 1998 | Earl Moon

I have a problem with measling on our PCB's. We saw it on our FR4 PCB's at final assembly yesterday. Is this a defect from the board vendor or something we did in our assembly process when building the PCA's (thru hole). Could the wave solder ma

Burn from Soldering Iron or Measling ??

Electronics Forum | Thu May 14 22:45:46 EDT 2009 | davef

You're correct. It's a peculiar looking defect. With measling, we expect to see discrete white spots or crosses just below the surface of the base material. We don't see that here. We do see a similar condition at almost every PTH in the picture, a

Crazing or Delam - Thermal or Mechanical?

Electronics Forum | Wed Jun 17 16:02:09 EDT 2009 | mhunter

Any thoughts on this will be appreciated, thanks in advance for reviewing. This assembly has been processed in our facility by going through a press operation (~ 1731 lbs), then into wave solder. Note the discoloration around the pemnut. The discol

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