Electronics Forum | Mon Jan 31 12:24:24 EST 2000 | Dave F
Robert: Several points: 1 Dross is a mixture of various things with no "fixed" composition: � The obvious things are metal oxides mixed with metal and this can vary in color with temperature and composition - remember some intermetallic oxides form
Electronics Forum | Wed Oct 06 11:40:41 EDT 1999 | Debbie Alavezos
| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n
Electronics Forum | Tue Oct 05 04:01:36 EDT 1999 | Brian
| Hi, | | Help! Could anyone help to enlighten me on this? | | Question: | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a normal water cl
Electronics Forum | Wed Jul 15 17:47:59 EDT 2015 | mikekeens
I've read different views on this but the best results i've seen are from when the misprinted PCB is put directly into an automated 'spray-in-air' cleaning machine and cleaned using an appropriate cleaning chemical. Any attempt to manually clean the
Electronics Forum | Tue Apr 29 13:43:34 EDT 2008 | arminski
THANKS FOR YOUR REPLY GUYS... more background... solder paste is Water Soluble. We mask the potentiometers prior to aqeous washing using solder mask, then our operator brush the solder joints with IPA after the Wash Process...I'm concerned about th
Electronics Forum | Thu Apr 19 15:22:34 EDT 2001 | jdtpfacreate
Spanky, It sounds like you are looking for a recipe to use when you do get an assembly in that has 0201's on it. We have worked with our customers worldwide in the development of the process to use 0201's. Most equipment manufacturers out there
Electronics Forum | Sun Apr 15 20:58:17 EDT 2007 | darby
PCB > Origin > O* > Skip = No Data In > PCB > Mount > M* > Skip = No Data In > System > Parameter > Position > Waiting Pnt Check that the waiting point is not set at such a co-ordinate that the PCB sensor is seeing the gantry. The pcb sensor also h
Electronics Forum | Sat Mar 28 17:38:14 EDT 2009 | Peter
Hi, I bought a Philips CSM84 machine 2 weeks ago. I have no experience on SMT machine so I try to learn everything from the manual. There is an error message when I program a simple program and try to get it executed. "PCB FIXING ERR. LOCATE PIN NO
Electronics Forum | Mon Jan 27 12:02:00 EST 2003 | Mike Konrad
Dave is correct. No-clean flux + water = white residue (unless the proper chemical is mixed with the water). Additionally, no-clean flux + IPA = white residue. Many saponifiers work well as do other cleaning agents. White residue may also be a re
Electronics Forum | Thu Dec 07 00:55:51 EST 2006 | billylim
As you are aware the common method to rework BGA is : 1. Remove BGA with hot air reflow machine ( SRT as current practice) 2. Clean the BGA pad using solder iron and solder wick. 3. Replace BGA with SRT rework machine. The problem we have with
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