Electronics Forum: patches (Page 1 of 8)


Electronics Forum | Fri Nov 12 09:57:37 EST 1999 | Wolfgang Busko

A question arouses if it�s suitable with quality standards to solder a chip component onto another double-whopper-like to perform a patch. Often done in prototyping but is it also suitable for patches on boards already out in the field ? Any suggest

Re: patches

Electronics Forum | Fri Nov 12 15:08:46 EST 1999 | Gordon O'Hare

This is crazy

Re: patches

Electronics Forum | Fri Nov 12 16:15:19 EST 1999 | Bob P.

I agree with Gordon!!

Re: patches

Electronics Forum | Fri Nov 12 14:36:15 EST 1999 | Dave F

Good suggestion Brian!!!! Two companies that screen ECOs onto unpopulated boards are: ASI 8 Winn Ave Hudson, NH 03051 603-889-1999 www.additive.com Artie Desmaris Conductive Circuits 602.986.8939 fax0008 www.conductivecircuits.com Ta Dave F

Re: patches

Electronics Forum | Fri Nov 12 16:33:30 EST 1999 | John Thorup

Gordon and Bob I had to go back and read the previous postings again after reading yours and I must say that I still don't understand...please enlighten us John Thorup

Re: patches

Electronics Forum | Fri Nov 12 10:36:33 EST 1999 | Dave F

Wolfgang: Sure, stacking chip components is common practice in prototyping, as you say, but it's not good practice for production work. Documentation: * ANSI-IPC-275 does not allow stacking * MIL-STD-2000A does not allow stacking * J-STD-001B is u

Re: patches

Electronics Forum | Sun Nov 14 11:45:08 EST 1999 | Jeff Ferry

Back to Wolfgang's original request. Stacking chip components is just one of many unusual mods that are being added to IPC 7711 Rework of Electronic Assemblies. While some may deem this technique unacceptable, it is a relatively common practices

Re: patches

Electronics Forum | Fri Nov 12 13:05:36 EST 1999 | Brian W.

As a CM, I have had customers stack components as a temporary measure of incorporating an ECO. Most of the time, it includes using an adhesive to secure the component. Cost of material already in-house is the major factor when this occurs. Even th

Uneven Wave Solder Contact Patch

Electronics Forum | Fri Apr 12 07:40:50 EDT 2019 | krob

We have found that our wave solder will produce worse hole fill/top side fillets nearest the conveyor, on most boards. I believe this is due in part to the smaller contact patches near the conveyor fingers. What could cause this reduced contact

Leaking Wave Solder Pot Electrovert Stainless/SN100C

Electronics Forum | Thu Sep 03 10:13:38 EDT 2009 | markgray

Our wave started leaking a year ago. We welded, patched inside and outside the pot with metal patch. This works if you leave your wave on all of the time. If you turn your pot on and off consantly, the temperature cycles will bring the crack back. Ty

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