Electronics Forum: 20-30 (Page 2 of 14)

Wicking-solder found under mask

Electronics Forum | Thu Jul 05 20:30:00 EDT 2001 | dlkearns1

I've never seen this and was wondering how bad is this? We've tried to re-create this defect, but could not. Comments????????

Trapped Flux Under Component

Electronics Forum | Sun Nov 28 20:30:51 EST 1999 | Greg H

What are the possible consequences when there's a flux entrapment (location: vias under components)under components during wave soldering? thanks

SECS/GEM

Electronics Forum | Mon Jun 15 20:30:39 EDT 1998 | Nancy J Dawdy

Would anybody like to share experiences with adding and using the SECS/GEM interface on a multi-vendor line(DEK,FUJI,PANASONIC, UNIVERSAL,BTU)???

GPD off line programming

Electronics Forum | Tue Jan 22 20:30:44 EST 2002 | davef

Start with the following: * Aegis ISC (Circuit CAM) * Mitron (GenRad) (CIMBridge) * CAE Technologies (C-Link)

non-wetting

Electronics Forum | Wed May 22 20:30:52 EDT 2002 | ianchan

xzinxzin, de Process Engineer, Ah....HAH! bingo! go search the fine SMTnet archives. cuppa of threads posted within specific to this nature of inquiry of yours.

Universal Radial 8

Electronics Forum | Wed Jul 24 22:20:30 EDT 2002 | mantis

we have 3 Rad 8's and never use the verifer cause its too bloody slow.Why bother u cant verify parts being placed on a chip shooter so if your operator takes the same care when loading a reel there should be no need to verify.

Handling PCB assy's

Electronics Forum | Wed Oct 30 15:20:30 EST 2002 | Dan

I am wondering what the general concensus is for handling PCB's. Do bare hands pose a problem for PCB assy's? Should operators who handle boards wear gloves? Thanks for your input.

Solder Bursting

Electronics Forum | Sat Feb 14 20:30:55 EST 2004 | Dean

What are your preheat rates? Try a slower ramp. A typical insurance policy is to kapton tape the gold card edge. If your problem persists, try baking the boards to drive the moisture out.

DEK265

Electronics Forum | Thu Jul 01 09:53:12 EDT 2004 | randygray

This depends on the options that the machine is equiped w/ Green camera, Vacuum under stencil wipe, etc.. Price range for 1998 20-30K US Regards, rgray

X-Ray Criteria for BGA Solder Ball

Electronics Forum | Wed Oct 20 13:53:22 EDT 2004 | Greg D

Hi, What's the maximum and minimum solder void that can be accepted during X-ray? What about the percentage of Ball Roundness..20%? 30%? thanks and regards,


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