Electronics Forum | Wed Apr 05 02:27:20 EDT 2017 | soldertraining
Excellent document link you have shared. High Frequency signals reflected on circuit board, meaning that the impedance (dynamic resistance) varies with respect to the sending component.
Electronics Forum | Thu May 20 08:51:29 EDT 2010 | jry74
A lot of our dewetting is happening on plastic body components, such as ICs. When they are manufactured, the molding process requires a mold release to make the part release after molding. Usually, the release agent is silicon based, but you can't
Electronics Forum | Tue Feb 18 18:33:57 EST 2020 | jerlong2020
I have used infrared imaging to find electrical shorts on logic boards between the 5 Volt buss and ground. You can power the electrical short up to draw 50 to 100 mA and then look for the warm spot in the infrared display.
Electronics Forum | Mon Feb 10 16:13:56 EST 2020 | john_kim
Hello, Would you please recommend a proven Short circuit tracer/finder ? From time to time, to fix defective boards, I need to find a source of bridge between Power and Ground. I had used a simple Shortsniffe, but it was very hard to trace the origi
Electronics Forum | Mon Apr 12 11:32:47 EDT 2004 | Luis Lazcano
Can you share some information on the hazardous materials and cleaning details for your manufacturing processes, please ? These are the questions I need to ask you: 1. Do you use brominated fire retardant in PWB material? If not, what other type
Electronics Forum | Mon Apr 12 22:50:46 EDT 2004 | davef
For more information on flame retardents, try these sites: * http://www.bsef.com * http://www.firesafety.org For the summary of a study into flame retardants try: http://www.surrey.ac.uk/PRC/ IVF carried out an international study on alternati
Electronics Forum | Thu May 09 17:28:33 EDT 2002 | davef
There is no IPC specification, nor should there be. * There are just too many peculiarities in the design and fabrication of PWB. * The issue is not defining how to store boards. The issue setting expectation for reliable products and allowing you th
Electronics Forum | Mon May 27 12:24:21 EDT 2002 | arcandspark
Carol, I beleive there is an IPC spec for Moisture control. We see all kinds of problems with boards coming from the vendors. We use to bake all bare fabs upon recieving them. This helped alot but waste time. We now rely on the board vendors to bake
Electronics Forum | Tue May 21 17:25:28 EDT 2002 | Carol Stirling
Hi Dave F, Thanks for the reply, the question was Customer driven. Could you clarify your recommendations for heat sealed moisture barrier bags please - does this include Nitrogen vac pack? Our production runs are small, so there is an investigat
Electronics Forum | Thu Jan 03 15:20:02 EST 2002 | Luis F. Otero
What method of depanelization is used to depanelize circuit boards made of flexable ribbon cable material.Any input welcomed. Luis F. Otero (915)-780-5504
Midwest Circuit Technology provides Carbide Router Bits and End Milling Cuters for use in PCB Depaneling equipment. We have over 35 years of supplying tools and machining experience in drilling, Routing, Test Fixture manufacture.
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