Electronics Forum: stencil (Page 534 of 540)

Re: Wierd Tombstoning on Tant Caps

Electronics Forum | Tue May 05 13:38:51 EDT 1998 | Chrys

I've never seen this before. Today, I got this tombstoning on Tantalum Capacitors (Okay, I saw that before) Here's the part that seems weird to me: -They didn't tombstone onto a termination - they went onto their sides! That's right, bo

Re: Wierd Tombstoning on Tant Caps

Electronics Forum | Fri May 15 09:20:34 EDT 1998 | Earl Moon

I've never seen this before. Today, I got this tombstoning on Tantalum Capacitors (Okay, I saw that before) Here's the part that seems weird to me: -They didn't tombstone onto a termination - they went onto their sides! That's rig

Re: Altera PQFP240 Solderability

Electronics Forum | Thu Apr 16 13:50:49 EDT 1998 | Lou

We are having some difficulty soldering a 240 pin Altera device. We use Alpha WS-609, a very generic profile for that solder paste, and a 6 mil stencil with laser cut apertures (1:1 ratio). This is a 20 mil pitch device (aperture size is 10 mils X

Re: Altera PQFP240 Solderability

Electronics Forum | Thu Apr 16 13:47:36 EDT 1998 | Lou

We are having some difficulty soldering a 240 pin Altera device. We use Alpha WS-609, a very generic profile for that solder paste, and a 6 mil stencil with laser cut apertures (1:1 ratio). This is a 20 mil pitch device (aperture size is 10 mils X

Re: I am looking for training for SMT process.

Electronics Forum | Thu Feb 19 00:31:55 EST 1998 | Larry

The type of training I am looking for is things like micro BGA, flipchip, COB, new processes and techniques, ect. I already work with things like fine pitch QFP's, high mix double reflowed boards every day. I live in Vancouver, but I can drive to Sea

Tenting via(s) under BGA & CSP?

Electronics Forum | Fri Apr 12 17:22:47 EDT 2002 | davef

First, splitting hairs on parlance. * Conformal Coating. A thin electrically nonconductive protective coating that conforms to the configuration of the covered assembly to provide environmental and mechanical protection. * Solder Mask. Coating mate

Informations about Traceability

Electronics Forum | Fri May 16 10:06:44 EDT 2003 | pjc

Traceability of raw material, personnel and equipment performance during product manufacture: Tracing raw material is done by recording the material mfg.�s batch-code that they assign during the material�s manufacture. This is everything from the fl

speedline sale

Electronics Forum | Wed Nov 05 19:40:25 EST 2003 | Mike Konrad

Here's the official press release... New York, NY (November 5, 2003) -- KPS Special Situations Fund II announced today that it has acquired the stock and related assets of Speedline Technologies, Inc. from Cookson Group, plc for a total consideratio

Recomendations? Fuji CP7 or Univ HSP4797?

Electronics Forum | Sat May 22 19:02:04 EDT 2004 | Grant

Hi, I had another thread on this, however it's kind of petered out, and so I thought I would start another more specific thread. We have been looking at both the Fuji CP7 and the Universal HSP4797 however really have no idea what to choose. It seem

Vapor phase versus forced convection

Electronics Forum | Mon Aug 16 20:19:10 EDT 2004 | Grant

Hi, We have both Vapor Phase ASSCON semi auto as well as Soltec convection inline ovens. I must say we had no end of problems with Vapor Phase. We tried everything, and just could not totally eliminate tomb-stoning completely. We would always get a


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