Electronics Forum | Wed May 21 09:31:09 EDT 2003 | caldon
I need to first understand what "Peeled the BGA off" means. Was heat used? was this the pry and lift method? We had shorts under some BGA's we have and the solder was bridging from lead to lead but not on the board level at the FR4 on the BGA creati
Electronics Forum | Wed Oct 29 23:40:29 EST 2003 | ppcbs
We here at Precision PCB Services, Inc. Perform selective ball removal. We just completed a job today where we removed 4 balls, and then installed traces to dog-bone the pads at two locations on 30 BGA's. An eaisier and more cost effective solutio
Electronics Forum | Mon May 03 17:12:08 EDT 2004 | pjc
here are more selective laser soldering system suppliers: http://www.seica.com/en2/a30firefly.html http://www.rpsautomation.com/products/opus_4.htm http://www.mta.ch/e/sold/index.htm http://www.novolas.com/pages/index.cfm?vDom=2&vSpr=2&vRub=299 http
Electronics Forum | Mon Jun 28 10:02:06 EDT 2004 | fmonette
The answer is yes, it is possibly a moisture-related problem. You can confirm this by baking your parts at 125C for 48 hours (ref. J-STD-033A, table 4-1). For more technical background on this issue I recommend you read the following paper : Impac
Electronics Forum | Mon Oct 25 17:55:47 EDT 2004 | Mike
Circuit Science, Inc. Plymouth, MN Mike Dupont / Sale Mgr. www.circuitscience.com miked@circuitscience.com Please send me an email and we will take a look at your pcb. We have been in the PCB industry for over 30 years. 2 layer boards - 18 lay
Electronics Forum | Mon Oct 03 21:15:16 EDT 2005 | adlsmt
Its a single board, one up. 4 layer, pretty simple, no large copper pours. We get these consigned from our customer so I cant work that end of it but wanted to make sure to cover everything I can. The oven it runs in was just checked out by the facto
Electronics Forum | Thu Mar 15 00:53:06 EDT 2018 | dpalombo
We are looking for a domestic contract assembler that has experience placing Zierick pins onto IMS boards. Specifically we need to place the A1, A2, A3 and A4 pins of any length. Information on the pins can be found here: http://www.zierick.com/pa
Electronics Forum | Sun Feb 17 17:55:21 EST 2019 | davef
Each time that you cook imm surfaces, you give-up coating thickness. Spec IAg can take maybe 4 thermal cycles ... [that's what I remember but those could be PbSn, not SAC cycles]. Anyhow, the more that you decrease coating thickness, the more that Cu
Electronics Forum | Fri Feb 26 08:30:10 EST 2010 | davef
Low cost prototyping * TWS Automation Quadra [www.tws-automation.com 39 0585 634758] * Versatronic RV4 [VSMT Solutions Ltd; 6 Dean Way, Aston Clinton, Aylesbury HP22 5GB, Buckinghamshire; 01296 630341 F01296 632144 http://www.vsmt.co.uk; David Clemen
Electronics Forum | Wed Feb 21 19:46:13 EST 2001 | Dave E
u" are smaller. 1uM = 39.4u" and so 3-7uM = 118-275u" Then some articles or specs really confuse things by mixing mm and uM or using u all by itself... http://www.circuitree.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2133,11666,00.h
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