Electronics Forum | Tue Feb 06 13:02:36 EST 2001 | kmorris
Hi all: We are seeing "solder webbing" on the bottom side of some of our PCBs after wave solder. The solder is sticking (like a spider web) to the solder mask on the PCB. This is only happening on 2 of the many PCBs we wave on that machine. Both o
Electronics Forum | Wed Feb 07 21:45:06 EST 2001 | davef
Since, 1996, Samsung has been the sole supplier of Quad component feeders. And I believe Samsung is the developer and producer of Quad�s Meridian placement machines. Quad has been fighting with Samsung for over a year [http://www.quad-sys.com/inves
Electronics Forum | Thu Feb 08 07:57:33 EST 2001 | CAL
DAVE F. Far be it for me to correct you, it is not my place. I just want to Calibrate your GPS a little. The short and sweet version- Quad was to sell Samsung machines under a private label. All was ok until Quad released a machine to compete with Sa
Electronics Forum | Wed Feb 07 09:46:20 EST 2001 | pjc
I need some guidance here. I've got a new board w/ a FBGA-48 package, Samsung CMOS SRAM. It's a full matrix BGA w/ 0.30mm-0.40mm ball diameter @ 0.75mm pitch. Balls are eutectic. PCB land diameter is 0.4mm. There are TSOP I 0.5mm lead pitch component
Electronics Forum | Fri Feb 09 20:05:15 EST 2001 | benefid
The ENIG process will yield between 3-7 micro inches (110 - 275 microns) of gold over the nickel barrier. This thickness range is pretty much the limit as this is a self limiting displacement reaction process. Once all surface nickel ions are repl
Electronics Forum | Fri Feb 09 19:30:46 EST 2001 | Adam
Does anyone know a simple PCB design program, for single and double sided PCB's? I am looking for a simple to use PCB design software for Win9x or NT for small home projects. Something like "Express PCB" at: http://www.expresspcb.com but with "rats-n
Electronics Forum | Mon Feb 19 18:57:49 EST 2001 | davef
Expanding on the limit of the portion of gold acceptable in a solder connection [mentioned in an earlier post]: The embrittlement culprit, AuSn4, is 29 weight percent gold. So even if one had 100% tin as the solder alloy and 10% gold were dissolved
Electronics Forum | Mon Feb 19 01:59:15 EST 2001 | dadi
I'm looking for a Transtarent & Non-Transparent PCI-to-PCI bridge that compliant with the Compact PCI Spec. This bridge must have the ability to be configured as Transparent or Non-Transparent. I aware to one chip that have those abilities. This chip
Electronics Forum | Wed Feb 21 14:40:44 EST 2001 | billschreiber
Hello Mark, As with any cleaning process, there are a number of variables that will affect the cleaning of adhesives with a Smart Sonic Stencil Cleaner: brand of adhesive, concentration of cleaning chemistry, temperature of wash solution, etc. Both
Electronics Forum | Tue Feb 20 14:00:50 EST 2001 | billschreiber
Hi Dave, It sounds like you haven�t been shopping for stencil cleaners in awhile. Ultrasonic stencil cleaners start at $12,900, evaporators start at $6,800 and 440-R SMT Detergent is $19.00 per gallon. For $19,719.00 you get everything you need to