Electronics Forum | Tue Nov 20 19:08:15 EST 2007 | Peter
Hello, I would like to ask for opinion on an epoxy application. We apply RTV to bond and secure 2 electronic devices on a PCB. But after noticing the RTV bond breaking off during vibration test, our customer has specs in a 5min 2-part epoxy (made
Electronics Forum | Mon Jul 18 12:24:53 EDT 2016 | oleksz
Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen
Electronics Forum | Mon Jan 09 23:24:47 EST 2017 | saju86ece
Hi, We are doing pin in paste reflow process in one our product ( but paste printed on bottom side of the board and top side will be assembled through hole component)in which faced cold solder issue in THT capacitor location after reflow. The solder
Electronics Forum | Mon Aug 24 23:44:08 EDT 2020 | kylehunter
Hey all, We recently purchased a second hand EBSO SPA-400 selective. Other than the normal pain of a used machine, everything seems to run OK. We ran some preliminary tests, with really bad results. There were tons of shorts and icicles. The only noz
Electronics Forum | Tue Dec 14 22:17:33 EST 1999 | Dave F
Armin: How ya doin� bud? CK gives good advice, but I'd like to take a bit of a different angle. Q1. For 0.7 mm (0.027in) diameter hole for vias, what�s the minimum annular ring for this hole diameter? Depends on what you�re trying to do. For in
Electronics Forum | Tue Jul 11 23:28:59 EDT 2006 | donb
Hi All, I have a continuing problem here with mis-alignment of parts on one of our Fuji CP-3 machines and I thought one of you esteemed engineering types may be able to give me a clue as to where the problem might lie. I have a Fuji trained enginee
Electronics Forum | Wed Nov 01 22:58:31 EST 2006 | davef
Durastone is commonly used in flooring. Durostone is a proprietary product of R�chling Permali Composites SA [be aware this is a French company] that many use for reflow and SMT process pallets. Suppliers are: * R�chling Permali Composites SA; Canog
Electronics Forum | Fri Feb 09 11:48:09 EST 2007 | realchunks
0.25mm tilt? That's pretty small depending on you BGA size. Is it failing? Or just your Q.E. being anal? What size BGA we talking about? What ball count? Just one board? Maybe cheaper to just repair. Now assuming there is NO part under the BGA
Electronics Forum | Thu Jul 07 19:39:18 EDT 2005 | darby
This is a very difficult question to answer as it will depend greatly on your component mix. I will presume that the CSM 84VZ is of the following configuration: 2 x RDC Synchro Heads. Heads 1 & 2. These are mechanically centering heads with a chucki
Electronics Forum | Wed Dec 09 14:33:02 EST 1998 | Dave F
1. What is your minimum dross generated that triggers you to procure an SRS? Your finance department probably has guidelines for the pay back of capital investments. Some companies use period of time to break-even. Others use a net present value
