Electronics Forum | Mon Feb 05 17:18:53 EST 2001 | davef
Wha, Nellie!!! Delamination & Blistering IPC-A-600D Although it may occasionally occur because of a severe process breakdown, delamination and blistering occurs as a result of an inherent weakness of the material. Either condition represents a brea
Electronics Forum | Tue Mar 23 14:08:57 EDT 2010 | davef
You have what looks to be blisters/delamination. Use IPC-A-600F as a guideline for acceptance. Usually, we start from the opinion that blisters/delamination as a fabrication issue, even if it appears during solder processing. Often blisters/delam
Electronics Forum | Mon May 14 22:24:11 EDT 2001 | davef
The time over liquidous of the profile seems short. But then again, who knows? Based on what you told us, I'm guessing at a board fabrication problem, either measling or delamination. Probably the former, rather than the latter. [Now, we remember
Electronics Forum | Mon Jun 08 13:26:59 EDT 1998 | D.Hammond
I work QA at an OEM in Alberta, Canada. I saw earlier posts on the smtnet regarding PCB haloing criteria. I am currently in a dispute with my PCB vendor over the acceptability of haloing (delamination) around plated through holes and vias on a lot of
Electronics Forum | Mon Jun 08 15:00:08 EDT 1998 | Earl Moon
| I work QA at an OEM in Alberta, Canada. I saw earlier posts on the smtnet regarding PCB haloing criteria. I am currently in a dispute with my PCB vendor over the acceptability of haloing (delamination) around plated through holes and vias on a lot
Electronics Forum | Mon Jun 08 15:01:02 EDT 1998 | D.Lange
| I work QA at an OEM in Alberta, Canada. I saw earlier posts on the smtnet regarding PCB haloing criteria. I am currently in a dispute with my PCB vendor over the acceptability of haloing (delamination) around plated through holes and vias on a lot
Electronics Forum | Tue Jul 27 17:47:36 EDT 1999 | Earl Moon
| While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That would
Electronics Forum | Wed Jul 28 12:02:48 EDT 1999 | Wolfgang Busko
| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou
Electronics Forum | Wed Jul 28 16:36:30 EDT 1999 | Earl Moon
| | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That w
Electronics Forum | Sat Jan 16 02:43:21 EST 1999 | Earl Moon
| Hello, | | We are qualifying new sources of PWB vendors. We've got the first lot of "produciton" boards in and we want to put them through the paces before turing the vendors on. | | So far, the tests I can think of performing, and that we have
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