Electronics Forum | Tue May 09 14:49:57 EDT 2006 | Larry
Hey guys, Anybody having trouble with increased false contact issues in ICT after switching from lead to lead free? Our test guys keep trying to imply that the flux residues are a problem (we're using Alpha EF2202), but as the soldering process eng
Electronics Forum | Thu Sep 12 11:26:11 EDT 2002 | scottefiske
CK, If joints have been validated prior to ICT (under BGA Scope), more often than not repeatable joint fractures are due to undo stress being placed on the component during ICT test. Verify ICT probes and fixture. If after proving out fixture/pin com
Electronics Forum | Fri Oct 13 15:55:53 EDT 2000 | Dave F
Guys, two things: 1 Fluxes have different probing chaacteristics. Consider broadening your horizons. 2 Look at SMTnet thread ... ICT Fixtures No-Clean Flux - Cartman 14:04:14 03/16/2000
Electronics Forum | Thu Nov 14 09:02:46 EST 2002 | MA/NY DDave
Hi Making contact has been one reported problem, so some testers put in higher force probes that then might cause problems. If fixturing is done correctly, the OSP is done correctly, and test follows close in time after soldering little problems s
Electronics Forum | Fri Aug 22 00:25:20 EDT 2003 | mantis
Kenny, Out of curisoty why do you need to paste the vias.Is it due to contact reliability at test.Can these vias not be soldered during wave process (if any).Can the Style of probe used in the ICT test fixture not be changed to accomodate these unsol
Electronics Forum | Mon Sep 13 18:34:31 EDT 2004 | russ
Use Water soluble if you can, if not I would try the Indium SMQ NC paste, this residue stays soft. I would also change ICT probes to the "drill type". Russ
Electronics Forum | Thu Apr 14 11:03:51 EDT 2005 | patrickbruneel
All possible causes aside, how can a dead short pass your ICT unless the connector is not probed.
Electronics Forum | Wed May 10 00:46:32 EDT 2006 | Chris
I agree! I am using a SAC305 no clean from Alpha. I have noticed that even hand probing with volt meter leads requires me to press very hard on the pads to bust through the flux residue.
Electronics Forum | Thu Sep 21 14:54:24 EDT 2006 | realchunks
Yes, there are several styles available. Some twist whilst being loaded (like some of us), the other style is pneumatically fired.
Electronics Forum | Wed Nov 29 09:25:42 EST 2006 | russ
So why are you telling us about the solder bar? What is the flux? that is what you need to change, you have a rosin based flux it sounds like. you can change probes in test fixtures or change flux chemistries. Russ
I.C.T is a manufacturer from China that offers SMT, DIP, PCBA conformal coating equipment and turnkey solution.
I.C.T Industrial Park, Building 1
Dongguan, 30 China
Phone: +86 13670124230
