Electronics Forum: pass (Page 137 of 142)

Re: Thanks.

Electronics Forum | Fri Jun 04 17:26:11 EDT 1999 | C.K.

Geez, those test guys are always whining about via holes, aren't they? I even had one test guy go over to our finals/add-on department and instruct everone to look for unfilled vias and fill them by hand! Without consulting the area manage

Re: Thanks.

Electronics Forum | Mon Jun 07 11:10:56 EDT 1999 | Brian Wycoff

Geez, those test guys are always whining about via holes, aren't they? I even had one test guy go over to our finals/add-on department and instruct everone to look for unfilled vias and fill them by hand! Without consulting the area

Re: Wave Solder Problems - VIA HOLES

Electronics Forum | Tue Jun 08 11:40:03 EDT 1999 | Steve Skinner

I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. We've been getting a rash of defects that we call in this company, "insufficient solder in VI

Re: Solder FINES vs. Solder Balls

Electronics Forum | Thu Apr 15 15:07:20 EDT 1999 | Mark Charlton

Can someone explain the difference between solder "fines" and solder balls? Is there an official specification where "fines" are defined? What is the spec for "fines"? I consider "fines" individual unmelted metal spheres that ar

Re: Solder FINES vs. Solder Balls

Electronics Forum | Sat Apr 17 12:00:12 EDT 1999 | John W

Can someone explain the difference between solder "fines" and solder balls? Is there an official specification where "fines" are defined? What is the spec for "fines"? I consider "fines" individual unmelted metal spheres t

Re: Solder FINES vs. Solder Balls

Electronics Forum | Sun Apr 18 00:26:29 EDT 1999 | Vic Lau

Can someone explain the difference between solder "fines" and solder balls? Is there an official specification where "fines" are defined? What is the spec for "fines"? I consider "fines" individual unmelted metal sph

Re: Suspect BGAs

Electronics Forum | Wed Mar 17 19:00:14 EST 1999 | Earl Moon

We are having a small number (~2%) of our boards pass our manufacturing diagnostics, fail once they reach the customer, fail when they get back to us and then start working again after handling them for a short time. We have eliminated a lot o

Re: Static Concerns

Electronics Forum | Mon Jan 11 21:34:37 EST 1999 | Dave f

I know that static concerns are very important in your work. Are static concerns eliminated by the antic-static devices you wear or which are in your environment, or do the hand tools you use, such as picks, tweezers and brushes, need to be anti-st

Re: Fillet Lifting

Electronics Forum | Tue Aug 01 09:42:07 EDT 2000 | Gary

The Technical Services Group at Alpha Metals has spent a fair amount of time looking at wave soldered Pb-free connections. We too have observed fillet tearing, fillet lifting, and pad lifting. I have concluded that without major changes in the mate

AOI vs. XRay

Electronics Forum | Tue May 08 11:27:49 EDT 2001 | Eyal Duzy

I will review some of the advantages/disadvantages of AOI vs. X-Ray one by one according to the main differences that you may find between them. * AOI uses optics that can "see" only visible elements. X-Ray can "see" hidden elements. There is a ve


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