Electronics Forum | Fri May 07 12:39:01 EDT 2004 | rontdc
Bruce, Using a foam fluxer with no-clean flux is a very touchy situation. It is imperative that the specific gravity of any flux be maintained within the manufacturers recommendations. If it is not, you will get icicles and bridging. Maintaining the
Electronics Forum | Thu Dec 15 08:09:06 EST 2005 | GS
Hi Liza, several years ago we had problem like that only with Carrier Tape made by Ploycarbonate material and by using High Speed pick & place. Very few pbms met by using low speed P&P machine. Problems have been solved by using Polystirene Carri
Electronics Forum | Mon May 01 23:23:58 EDT 2006 | grantp
Hi, I off center idea we used when we started. Get a pasta cooker, and put in vapor phase fluid, and then use that. Place the product in the bottom of the inner pot, and then heat on a small hot plate. When the vapor cloud gets high enough and the
Electronics Forum | Wed Aug 08 12:20:51 EDT 2012 | swag
We have a Kaeser AS-25 screw compressor with Kaiser air dryer + cylinders. The system has a water catch prior to delivering air to the dryer that automatically "spits" to a drain. It's not fool proof - if the water collector gets overfull, it will
Electronics Forum | Wed Apr 13 12:10:47 EDT 2022 | winston_one
Hello! We have a strange effect. Some pads of big trough-hole DDR slot just dessapear. Initialy it was soldered with selective soldering process (leaded, 290 degrees, ImSn finish, very short storage). Then some connectors with poor barrel fill we hav
Electronics Forum | Tue Mar 23 02:32:23 EST 1999 | Bob Willis
| | Has any one seen failures of chip resistors after 1-2 years where the junction between the silver termination and the restive element on the top of the ceramic has corroded through. This results in a high resistance failure after this period of t
Electronics Forum | Wed Mar 24 02:23:14 EST 1999 | P.L. Sorenson - Technical Consultant
| | | Has any one seen failures of chip resistors after 1-2 years where the junction between the silver termination and the restive element on the top of the ceramic has corroded through. This results in a high resistance failure after this period of
Electronics Forum | Tue Mar 16 14:05:04 EST 1999 | Steve Skinner
| Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there a
Electronics Forum | Fri Oct 11 09:28:14 EDT 2002 | davef
Designers love to do BIG copper pours for several reasons: * Maximize heat spreading. * Increase EMI shielding. * Laziness. The poor folk that solder the parts on boards HATE big copper planes near solder pads. During soldering, fat copper traces [
Electronics Forum | Fri Apr 08 16:26:36 EDT 2005 | Grant
Hi, It seems weird that an automated pick and place machine at a board shop would not be up to NASA standards, but placing the components by hand would be. However most SMT will self center a bit, so if your close enough, you should be ok. You rea
