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SMT COMPONENTS

Electronics Forum | Mon Jul 15 15:09:52 EDT 2002 | larryk

I have found that it all depends on your leadtime. I've found that tube and tray are easier to get then taper nad reel. I figure it has to do more with the vender. It's much easier to sell small quantites (ie tubes) then to try and sell a huge reel o

Wave Pallet Lifespan

Electronics Forum | Mon Jul 15 15:09:45 EDT 2002 | peterson

Hi all, I am trying to find some data that will show me the typical lifespan for a wave pallet. I realize that it depends on material used (Durapol, for instance) temp profile, etc and I HAVE checked the fine SMT archives... Anyone have an average n

Recovery of Expired Solder Paste !!! + Squeegee Lifetime

Electronics Forum | Tue Jul 16 21:35:48 EDT 2002 | davef

Reworking used paste. We do not rework or reuse used paste, because we have no experience reformulating paste or controlling the process. Squeegee life. We do not use squeegees with damaged blades. After that, if we can fixture them and get good

OSP degradation

Electronics Forum | Wed Jul 17 11:52:54 EDT 2002 | tmarc

Hello all, I have a question about OSP. The solder mask over traces leading to SMT pads, in some instances, does not cover all the way to the pad. Of course the stencil apertures do not include traces. After the SMT and reflow process, there is visib

Yield levels

Electronics Forum | Thu Jul 18 08:54:49 EDT 2002 | Mark S.

How do you capture the workmanship details on a "per joint" basis? I have recently implimented first pass yield in SMT but it is based on the whole part and not the number of joints. And yield is calculated by PCB failure rate..a PCB with a solder b

Yield levels

Electronics Forum | Thu Jul 18 13:55:29 EDT 2002 | slthomas

Greg, So you mean that on a Class II board with 6000 connections (in our case, the board has about 1800 parts) you would average somewhere in the neighborhood of 540 connections touched up? My gawd, man, what are you building? We'd have to hire ab

SMT Insignia Enigma

Electronics Forum | Wed Jul 17 13:54:09 EDT 2002 | kenbliss

Based on the images I do not recongize the logo however it appears you have a pc board with the logo and no name. the pc board did have the UL recognized mark. If you go to Underwriters Laboratories web site http://www.ul.com with the recognized nu

Military wire harness guru

Electronics Forum | Sun Jul 21 08:36:42 EDT 2002 | davef

We know of no one like that, but angles to take in looking for this person might be: * 'Connector Specifier' Susan Woods 847-876-5602 * Ed Cady, Meritec, 888-637-4832 * Robert Mroczowski, ConnNtext Associates, 717-664-2246 * John Peel, Contech Resear

Cleaning of Entek Boards

Electronics Forum | Thu Jul 18 21:56:40 EDT 2002 | computer

Hi Dave, I read the same article as you. But that method leaves solder balls in via holes or traces of it remains on the boards. I am using ultrasonic with solvent for cleaning misprint boards. Apprarently, they have adverse affect to the en

Key Production Indicators

Electronics Forum | Thu Jul 18 09:31:11 EDT 2002 | Mark S.

As part of our Efficiency Improvement Plan I have been tasked at determining the Key Production Indicators from available production data. So I thought I would ask others what they thought were 1) the top production indicators for their facilites 2)


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