Electronics Forum: warpage (Page 1 of 29)

warpage dtandard

Electronics Forum | Mon Aug 18 09:28:04 EDT 2008 | eyalg

The following standard is used to determine warpage: "High Temperature Package Warpage Measurement Methodology" JESD22B112

Board warpage

Electronics Forum | Mon Mar 03 10:31:57 EST 2003 | Tim Nicholson

Is there any standards for board warpage for surface mount boards?

PCB warpage

Electronics Forum | Thu Oct 14 04:28:29 EDT 1999 | Grace Chua

Hi there, I have quite a number of problematic bd due to warpage problem. I would like to know the method on how to measure PCB warpage, thus to decide on the dispositon of these boards. Another question, can these warp bd be rework/fix. Is there

Board warpage

Electronics Forum | Mon Mar 03 11:07:40 EST 2003 | MA/NY DDave

Hi In addition to what DaveF gave you which you should look at first Search the archives for warp bow twist warpage etc. A Lot of treads exist. Many of the larger OEM's and even the Mil have historically created their own documents for acceptable

BGA warpage

Electronics Forum | Wed Jan 20 13:07:16 EST 1999 | Robert Noory

I have received prototype PBGA (256 pins) devices from Motorola (actual part number = KXPC850ZT50). These parts seemed very warped on the edges. When I put the part on a plain surface, it rocks quite a bit when I press lightly on a corner. I have

BGA warpage

Electronics Forum | Wed Jan 13 19:13:59 EST 1999 | Michael Allen

Just a comment: we've seen PBGAs curl up at the corners, but only on prototype components that came off of a low-volume "prototype" line at our component supplier's lab (non-production overmold material was used). Production parts have not exhibite

Board warpage

Electronics Forum | Mon Mar 03 10:49:12 EST 2003 | davef

Look here: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=5943&mc=2

pwb warpage

Electronics Forum | Mon Feb 02 11:51:23 EST 2004 | prs

Hello, I'm working with Nelco 4000-13 material .031 thk and am experiencing some warping. the board is roughly 1" by 3" and the warping is in the long dimension. The grain on the panel is also in the long dimension. Any pointers or advice on contr

pwb warpage

Electronics Forum | Mon Feb 02 16:42:03 EST 2004 | davef

Bow & twist for bare boards and panels: IPC-A-610 1.5% for PTH only and 0.75% for SMT. So, what are you doing to these poor boards to make them warp?

pwb warpage

Electronics Forum | Mon Feb 02 22:05:35 EST 2004 | Dean

Hey Dave, you sound like my local board supplier...just kidding. Incomming inspection will protect you in these cases. Go no-go gauge is a simple as it gets.

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