Electronics Forum | Thu Feb 15 16:58:11 EST 2007 | flipit
Phil, I used to print solder paste on 2" X 2" and 3" X 3" 96% Alumina substrates all the time. I used standard solder printers and stencils. Screens are difficult to use and don't print well. You can use a stencil on a DeHart, CW Price, or AMI Pr
Electronics Forum | Tue Sep 11 22:52:18 EDT 2007 | davef
Here are some options for removing OSP coatings from pads of the BGA substrates. * Leave the substrates in storage for 13-14 months. Shelf life of OSP coating is ~12 months, depending on the product. * Wash the substrates in your aqueous washer. Ea
Electronics Forum | Mon Aug 27 11:11:16 EDT 2012 | rway
We have 1/2 dozens 0.031 pcbs that bow after going through the oven. We are looking for a solution to this problem to prevent bowing of the pcbs. As a result of the bowing, the pcbs, on occasion get caught in the oven, and more often have transfer
Electronics Forum | Thu Mar 26 12:22:22 EST 1998 | Bill Schreiber
The Smart Sonic Stencil Cleaning Process has been very successful in cleaning misprinted ceramic substrates. We would be happy to test clean your product. Contact me toll free at (888) 499-7440. Bill Schreiber | We currently use an abrasive fiberg
Electronics Forum | Tue Mar 18 17:23:40 EDT 2008 | dkntb
Any member in here has experienced of copper migration from BGA's substrate to PWB during eutectic soldering reflow process, which resulted in brittle solder joints??? We have one customer notified us that our PBGA with DSOP substrate having copper m
Electronics Forum | Fri Jul 07 12:44:49 EDT 2017 | tsauve
The problem is registration between the stencil & the smallest pads on the 5 substrates. Using SPI s/w I can overlay the paste layer over the PCB image to determine stretch/shrink. Our worst case was shrinkage of 10.2mil on a 5-up 300mm panel - small
Electronics Forum | Tue Sep 19 08:53:11 EDT 2000 | DL
Does Photonic soldering work well with Ceramic substrate PCB's? and can it be used for die?
Electronics Forum | Mon May 25 00:51:24 EDT 1998 | KUO-CHING,HUANG
PLEASE E-MAIL OR FAX TO 886-5-5574601 TO ME. THANK YOU KUO-CHING,HUANG
Electronics Forum | Tue May 26 02:02:18 EDT 1998 | FRANK CHEN
| PLEASE E-MAIL OR FAX TO 886-5-5574601 TO ME. | THANK YOU | KUO-CHING,HUANG
Electronics Forum | Fri Sep 13 18:01:18 EDT 2002 | dbonilla
Do you know what will be the best solder process for pins at the edge of the ceramic substrate? Thanks
