Electronics Forum | Tue Aug 05 12:05:15 EDT 2003 | mleber
Through hole question - what methods can be used to obtain upflow on multi layer pwbs with huge ground planes. We are using a water soluble flux with a max temp of 220 topside. I am pushing the limits of the flux and hitting 250 topside in an attempt
Electronics Forum | Thu Aug 07 13:13:51 EDT 2003 | mantis
Its been awjile since i was on a Cp643e but it sounds like there is a difference between the table board width and the fast loader width,when a board is to be transfered from the fast loader to the table the knuckles on the fast loader mechanism shou
Electronics Forum | Fri Aug 08 08:00:46 EDT 2003 | davef
Matt: You're correct. Do not mess with these boards. If the immersion tin [imm tin] is discolored, it will not solder with routine processes. Ask your customer to return the boards to his / her fabricator and have the imm tin replated. The fabri
Electronics Forum | Tue Aug 12 16:42:16 EDT 2003 | BBT
Just a note about the EU and no-lead. Not all products are subject to the EU legislation on no-lead. I'm told its consumer electronics, PC, mobile telephones, telephones, games, automotive, etc... those that find themselves into the waste stream. And
Electronics Forum | Thu Aug 14 16:36:45 EDT 2003 | Hussman
Anyone using these 2010 resistors? We just tried them and they bow like crazy during reflow. Not very good looking. Profile meets manufacturers spec. The part solders and works fine, but I'm a little concerned about putting anything on a board th
Electronics Forum | Wed Aug 20 11:21:30 EDT 2003 | Stan Stacy
Our old roof mounted air conditioners are currently not working. We are having some very humid weather right now which has been giving us some solder paste contamination problems. My Surface Mount line is in one room, (approx. 19,000 sq. ft.) along w
Electronics Forum | Thu Aug 21 08:47:34 EDT 2003 | caldon
Stan- One of our buildings (not our SMT line or components) Has Great Aircondition but can not regulate the humidity. The building is cool but Wet (No need to lick envelopes as they are already stuck together) from humidity. We went out and found th
Electronics Forum | Wed Aug 20 21:30:56 EDT 2003 | paulm
Our company if currently reviewing our BGA Screen Printing Process. The problem we are trying to eliminate has to do with BGA Ball Size Variance. Some of our vendors are allowing a +/- of 0.004" in ball size. This would allow for the possibility of a
Electronics Forum | Sun Aug 24 15:00:46 EDT 2003 | Handsome zhang
I am placing a plastic Cypress, 256 pin BGA on a > small assembly, and I cannot stop the corners > from bowing. I've moved my profile up and down > with no results. Any suggestions? Hi mike I am a staff of smt in ASUS(TAIWAN),I have a large in
Electronics Forum | Wed Sep 01 19:28:50 EDT 2004 | Enrique
Hello. I have a question, i don't know if any one of you can help me. The same screen printer comes with a small thermal printer: Panadac-931-02-A; I wan't to use it for another application, but I need the drivers in order to print from a Windows ope
