Electronics Forum | Fri Sep 06 11:16:08 EDT 2002 | dason_c
To check any solder crack, open under the BGA/CCGA. I am using a destruction test to find out is it related to the reflow profile or the Fab issue. 1. Depense the Dye (I use Dykem Steel Red) under the device. 2. Cure the dye 3. Remove the device 4.
Electronics Forum | Tue Sep 10 14:43:21 EDT 2002 | finepitch
I'll keep this short and end with another CM sales pitch. I do not suggest "cutting the bleeding arm" as few others suggested. There are good CMs sending "fully" populated boards. And there are good overseas ones where their average wage is US$4 wh
Electronics Forum | Wed Sep 18 06:53:05 EDT 2002 | CH
1) For solder short, pls check the paste height. Too much vol will cause short. For 15 mils use 5 mils thickness stencil if possible. Check profile preheat time to prevent hot slumpof the paste. 2) type 4 powder will be better for 15 mils pit
Electronics Forum | Fri Oct 18 21:31:15 EDT 2002 | caldon
Many times the board may look the same but incases there could be subtle differences that could cause your process to go out of process limit. With boards that look alike you still need to consider: Solder paste (Is key to the reflow profile) compone
Electronics Forum | Mon Oct 21 13:12:38 EDT 2002 | pr
Try a "cross" design across the problem apertures. So you wind up with 4 smaller deposits on the PCB (instead of 1 big one) but should be enough to hold the component. It worked for us and was much easier on the blades (they kept catching on the far
Electronics Forum | Wed Nov 06 11:35:19 EST 2002 | slthomas
Is it possible that your HVAC system activity is having an effect on your product, as in drying out (or adding moisture to) your paste, or something like that? Have you compared your profiles during wide swings on outside temperature? I'm still on
Electronics Forum | Mon Nov 11 15:41:55 EST 2002 | ikovnatsky
hi, Does anyone have a set of install disks for an mcs16f I called fuji and they do not have any ( they sent the last ones out 4 weeks ago) I have two corrupt files on my HD tci and tran_p. Any help or suggestions will be apreciated. Ilya
Electronics Forum | Tue Nov 12 13:23:21 EST 2002 | Sergio Vito
Hello Sirs, I would really appreciate if somebody could help me to understand how these elements of cost bellow can affect the total cost of an SMT facility. I am studying these numbers for benchmarking purposes. 1) Equipment amortization 2) Maint
Electronics Forum | Mon Nov 18 11:14:57 EST 2002 | bpan
Very good machine. Dont know about Claude but sounds like he doesnt know the machine too well. Be careful if you buy it because Tyco's Parts support for the machine are terrible. For ex. Tried to buy a sensor for the lifters on our transport and they
Electronics Forum | Fri Nov 29 08:36:07 EST 2002 | Jeff Park
They have there strong points and weak ones. I have worked with them for the last 5 years and have seen some flakey problems (Cables, feeders, encoders) that will cause you some down time but if you get a good price on a system it might be worth it.
