Electronics Forum | Tue Jan 12 09:59:13 EST 1999 | Russ Steiner
| I know that static concerns are very important in your work. Are static concerns eliminated by the antic-static devices you wear or which are in your environment, or do the hand tools you use, such as picks, tweezers and brushes, need to be anti-st
Electronics Forum | Thu Dec 17 17:34:26 EST 1998 | Earl Moon
| Has any anyone established / published quality standards for BGA solder joints? Is IPC-A-610 in process of adding standards for BGAs? | The debate continues. I have felt for some time a maximum 20% voiding is allowable under certain conditions (w
Electronics Forum | Tue Oct 15 10:12:44 EDT 2002 | davef
1) Do people always bake, sometimes or never? Does this depend on whether MS sensitive components are near the rework site? If a BGA is to be removed and reballed, baking is a no-brainer. Sometimes, based on the proximity of the MS components. >2)
Electronics Forum | Thu Jun 23 20:09:03 EDT 2005 | Stefan
Optimizers for pick and place machines are very specific for the type and model of the machine you are using. A chip-shooter will run at optimal speed with the same type of nozzle and minimal table movement. Most X-Y tables have a faster X-axis than
Electronics Forum | Mon Dec 18 16:13:15 EST 2006 | darby
AJ, No overprint. We have components in very close proximity that precluded that. Also we have differing areas of thermal relief for the pads from a large backplane, from none at all to open blocks to individual pad relief. After a few more experimen
Electronics Forum | Sat Aug 23 08:43:32 EDT 2008 | davef
Ugh, there are more reasons that immersion silver [IAg] to go yellowish than pigs at the county fair. That aside, sulphur is one of the reasons, as you say. The sulphur can be from a variety of sources, such as: * Pollution in the air * Ill advised p
Electronics Forum | Wed Mar 31 06:08:45 EDT 2010 | miroyu
Hi everyone ! I started to program quad 4C for the first time and have some problems. First, board detection LED and proximity Led (on the front panel) are not lightning whatever I do! Second problem is I teach machine board size, nozzle locations
Electronics Forum | Thu Aug 30 13:26:40 EDT 2012 | joeherz
Appreciate all the replies. We have a good system in place with ESD tile floor, grounded systems/benches/etc and heel and wrist strap usage and monitoring. Good training program as well. We've recently upgraded to the 2007 version of the ANSI 20.2
Electronics Forum | Wed Apr 02 09:45:25 EDT 2014 | swag
Not sure what kind of humidifier you are looking at but here's my experience: We have 4 humidifiers. All are ultrasonic supplied with DI water. They work well but... UT humidifiers will create a foggy white residue that will stick to things in cl
Electronics Forum | Mon May 05 13:40:28 EDT 2014 | rway
The vent is there for reasons as the name implies. It's a safety feature to prevent the cap from exploding if over-tasked. Yes, without the relief on the end, the caps have a potential to become missiles when they go. I had one go off when my hand
