Electronics Forum | Fri Jul 16 11:27:57 EDT 2010 | davef
Consider: * Bow & Twist IPC-TM-650; Method 2.4.22 * Previous threads on SMTnet, like: http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=54498
Electronics Forum | Tue Aug 24 17:59:10 EDT 2010 | davef
A board support must be used to prevent bowing of the board during insertion of the sockets. It should have a flat surface with holes or a channel large enough to receive the sockets during installation. [Tyco AUGAT HOLTITE Socket Application Note 11
Electronics Forum | Mon Aug 27 16:40:15 EDT 2012 | cobham1
Ran them with stiffners and I worried about moving parts also but had the stiffners cut so that they could only go on so far which made it ok because The distance from the stiffners and parts was 1/16 of an inch no problem with movement.
Electronics Forum | Thu Apr 28 17:00:28 EDT 2016 | thejedeye
That is a large board, maybe some supports to help with bow. http://www.nozzleforled.info/ezload-pcb-support-modules.html
Electronics Forum | Wed Aug 19 13:52:11 EDT 2020 | goldendragon
Hello guys, Please help me how to parallel the width chain, it is bow out in the middle and keep dropped the board in oven, I can't find anything there that I can manually adjust the middle width to the same size with the entrance and exit. HELP!!! T
Electronics Forum | Thu Aug 10 11:56:25 EDT 2023 | leeg
For which connectors? We are using a Andon BGA connector and are having a few issues with solderability and occasionaly bow / warp?
Electronics Forum | Thu May 18 20:47:14 EDT 2000 | Dave F
Ed: It might be possible, never tried tho, but if an engineer wandered in, talking about it ... Printing: Makes me pretty nervous, because punched boards are not planar, don�t stay planar, and are inconsistently not planar. If I could work-out th
Electronics Forum | Fri May 19 10:39:19 EDT 2000 | Boca
Ed, I workded with punch and replace fabs yeeeeears ago, major pain! Dave's right, planarity is the biggest problem, then inconsistent retention in the panel, then ANY retention in the panel. If you can get paste on them, you may be able to place
Electronics Forum | Fri May 19 10:41:06 EDT 2000 | Boca
Ed, I workded with punch and replace fabs yeeeeears ago, major pain! Dave's right, planarity is the biggest problem, then inconsistent retention in the panel, then ANY retention in the panel. If you can get paste on them, you may be able to place
Electronics Forum | Fri Apr 20 05:32:39 EDT 2001 | dougie
Hi, I've just splashed out �60 on IPC-A-600F trying to find out the formula for measuring the bow and twist of raw PCB's. Much to my dismay there are 10 lines on the subject in the whole standard. Worse still is that it tells me nothing I don't alre
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