Electronics Forum: iron (Page 61 of 71)

Teflon Vs Fibreglass

Electronics Forum | Thu Apr 25 20:41:07 EDT 2002 | davef

Oh great!!! You do calibrations, what once a year? And NOW yer in a BIG �time is critical� rush. �Speed in reply is appreciated.� And why couldn�t you have asked this question 6 months ago? Just what have you been doing since the last calibratio

Sn/Pb diffusion

Electronics Forum | Mon Apr 29 22:32:59 EDT 2002 | davef

See, I didn�t bite on you zinc diffusion trick that you tried to pull last week. Understand, in this response, I am NOT trying to bust you. I�m trying to determine what you are looking to understand. [Some times I get so locked into talking a cert

Is there a medical rating and standards for PCB components

Electronics Forum | Wed Aug 07 11:55:31 EDT 2002 | slthomas

Ron, have a look at http://www.fda.gov/cdrh/dsma/cgmphome.html It would be a nightmare, if your plant is not structured to support it. It's a huge pain in the fanny even when you (alledgedly) are. I'm not sure what you're pursuing, but if you're c

Contract Manufacturing

Electronics Forum | Sun Aug 11 22:28:07 EDT 2002 | jersbo

a: charges are typically set by how many different part numbers you have(setup).. and how many placements there are(ie number of locations parts are to be placed) if there are 3 machines inline that does not matter.. its the amount of parts placed an

Old threads

Electronics Forum | Fri Sep 20 11:52:04 EDT 2002 | kenbliss

Hi Brian I see no reason why people cannot register, so the forum can be controlled. If they have legitimate business to discuss why would they not be willing to register. I think the responses from regulars to sales types are excessively abrasive

BGA attach eval.

Electronics Forum | Tue Apr 01 09:58:52 EST 2003 | davef

You're entirely correct. The gold is most likely gone away. [Don't forget you can check if the surface is still solderable with a hand soldering iron.] We're not sure it it will give you the results you seek, but consider using a dye penetrant fai

BGA attach eval.

Electronics Forum | Thu Apr 03 09:48:31 EST 2003 | davef

R1: Contacting Altera to find out if the BGA pads are gold. D1: Bet money the pads were ENIG. R2: Contacting Altera to find out if they use abrasives. D2: If abrasives were the problem, you�d see it in many pads, especially those close to the probl

Ceramic Caps

Electronics Forum | Tue Feb 24 09:52:14 EST 2004 | davef

First, two points about hole / barrel fill are: * A filled hole is an excellent indicator of the optimum process and optimum quality PCB. * The study that showed that holes need not be filled was paid for by the US Army and performed by Lockheed in

Wavesolder PCBs encounter pinholes

Electronics Forum | Wed Jul 21 13:18:19 EDT 2004 | patrickbruneel

Thomas, The first thing I would suggest you to do is identify the type of problem your dealing with �pinhole� or �blowhole� before you can take the appropriate action to correct the problem. A pinhole is a void or cavity caused by non-wettable part

Solder pot contamination

Electronics Forum | Mon Aug 09 20:47:21 EDT 2004 | KEN

I think OA flux left on the pot would quickly looses its activity and become part of the dross waste stream, and smoke stream for that matter. Also, if your wave is setup properly your selective pallets will scour (push) the top of the lambda wav


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