Electronics Forum: having (Page 1136 of 3473)

First piece inspection, 0402

Electronics Forum | Tue Jan 08 17:25:17 EST 2002 | davef

Stephano: Since you have not thought through this, it indicates that your discrepancy reporting and resolution process probably requires critical review. Consider highlighting this issue to your quality assurance staff.

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 17:03:44 EST 2002 | rob_thomas

We follow IPC-2221 recommendations for Au and don't have a problem as long as the Ni is under 150 microinches.This ensures a consistent process for us.Also we do plasma clean after SMt and prior to wirebond.That makes a big difference. Rob

Recomandation for purchase of SMT lines

Electronics Forum | Thu Jan 10 07:08:04 EST 2002 | Dmitry

Hi! Try Philips / Assembleon http://www.assembleon.com and DEK http://www.dek.com. I have experience with them and like their service very much! They are very attentive and professional, even if you are located in CIS countries.

Contract Manufacturing in USA

Electronics Forum | Thu Jan 10 12:02:14 EST 2002 | mparker

What is the expected volume to be outsourced to the US and where are your distribution sources? Do you have a particular US region in mind? I'm in Northern California - if you are interested in producing here, we can talk further offline.

BGA solder joint integrity

Electronics Forum | Tue Jan 15 12:20:16 EST 2002 | cfraser

This sounds like it could possibly be a case of Black Pad. We have had a few issuses with this in the past as well. Who the PWB vendor? I also recommend searching the archives and doing some solder samples with nonpopulated boards

SMT Line Test

Electronics Forum | Wed Jan 16 13:09:41 EST 2002 | jhingtgen

Yannick, I have been involved in a stencil consortium that looked at stencil design, technology, and paste as variables. This material will be presented at APEX 2002 in San Diego next week. This work was done by Rochester Institute of Technology i

reflow temp/ic damage

Electronics Forum | Tue Jan 22 20:37:48 EST 2002 | davef

Try: * Searching the fine SMTnet Archives. We have ground profiling, thermocouple attach, etc. to pulps. * Buying [ http://www.ipc.org ] IPC-7530 - Guidelines for Temperature Profiling for Mass Soldering (Reflow and Wave)

Any Ideas?

Electronics Forum | Sun Jan 27 16:19:09 EST 2002 | Rix

Does anyone have a good idea of a simple (GCSE standard) electronics project for a product that can solve a problem, e.g. Temperature controlled fan to cool down a PC. Please post your ideas. thanx

Effect of PWB vias on solder ball temperature

Electronics Forum | Wed Jan 30 06:45:01 EST 2002 | yaq

Hi, Has anyone done some research (measurement/simulation) on the effect of PWB vias on solder ball temperature of the component? Would this have some effect on solder joint reliability especially during power cycling? Any comments will be appreciat

GDM paste dispensing

Electronics Forum | Wed Jan 30 09:37:28 EST 2002 | clarkk

Does anyone out there have experience dispensing solder paste with a Universal GDM (4716AL) with positive displacement pumps? I'd like to hear any comments on the success or failure of the machine to dispense consistently, effect of temperature varia


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