Electronics Forum | Tue Dec 30 20:48:31 EST 1997 | Tom Gervascio
Has anyone had any experience with thermal shocking and cracking of SMD capacitors during the rework process? My company was advised to preheat capacitors to 125 C at a rate of 2 C/sec before replacing them onto boards. Would this maybe degrade c
Electronics Forum | Thu Jan 01 13:04:42 EST 1998 | scott cook
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Sat Jan 03 18:13:58 EST 1998 | David Jacks
Tom: You are right. Pre-heating is just as necessary in rework as it is in intiial production. Zephyrtronics produces an economical convective bottom side pre-heater known as an airbath. This product ramps the substrate and assembly at 2-4 degrees
Electronics Forum | Wed Dec 31 10:09:27 EST 1997 | Ken Daniels
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Wed Dec 31 08:55:09 EST 1997 | justin medernach
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Sun Jan 11 11:28:14 EST 1998 | Bob Willis
Most componnent cracking is mechanicaly produced a guide to causes of capacitor damage is included as a download file on my web page www.bobwillis.co.uk I feel that the supplier is looking to blame some one else. IPC make comment on pre heating chip
Electronics Forum | Sun Jan 11 11:28:12 EST 1998 | Bob Willis
Most componnent cracking is mechanicaly produced a guide to causes of capacitor damage is included as a download file on my web page www.bobwillis.co.uk I feel that the supplier is looking to blame some one else. IPC make comment on pre heating chip
Electronics Forum | Wed Dec 31 23:02:19 EST 1997 | Scott McKee
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Sat Nov 03 05:41:07 EST 2001 | Ben
Hi Could somesomeone help to let me know can bare PCB (FR4) is damaged by thermal shock? Can difference of CTE from copper or solder to FR4 damage PCB from apply heat too fast? Any specification or standard can i refer? Thank you Ben
Electronics Forum | Mon Nov 05 20:34:03 EST 2001 | davef
What�s the problem? There area many heat related failure mechanisms in bare boards. You can damage boards with heat several ways. A couple favorites [Don�t try this at home. Perform on a closed track by professional solders only.] are: * Put a
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