Electronics Forum | Tue Apr 14 15:01:00 EDT 2009 | mki
Thank you RLM, bobpan, Laser (CyberOptics) was dirty! Now is all OK. You are talking about Quad-Align. I have a lot of QUAD manuals and I still do not understand the diference among QuadAlign, CyberOptics LA and L3 LA! Please, if you can give me s
Electronics Forum | Tue Apr 14 04:17:47 EDT 2009 | zpivy
PCB Partner has a supplier database with thousands of PCB manufacturers. There is contact information, company introduction, and process capability information of each PCB manufacturer which is publicly collected and then verified by our staff. Suppl
Electronics Forum | Tue Apr 14 11:33:44 EDT 2009 | dyoungquist
I have the raw gerber files used to manufacture a bare pcb. I do not have the pick-n-place file giving the locations of the surface mount parts on the pcb. Does anyone know of a software program that can take the gerber files and generate a pick-n-
Electronics Forum | Tue Apr 14 14:05:07 EDT 2009 | babe7362000
Could anyone tell me why the prewash tank will run for awhile and then the tank will fill and over fill. I am not too aware of the machine and trying to help. It looks like there are 3 different level switches. It looks they work properly for abou
Electronics Forum | Tue Apr 14 18:54:57 EDT 2009 | swag
We have a handful of large, fine pitch QFP's for a HOT build. The leads are damaged due a loose matrix tray. We've fought with this in the past by straightening the leads by hand. We have no time to ship them out for re-bending or anyting like tha
Electronics Forum | Thu Apr 16 09:54:12 EDT 2009 | davef
We know virtually nothing about your process, but here's some guesses: * Turn-off the nitrogen * Change from Sn63 to Sn62 * Change to a low-tombstone paste * Change the thermal recipe: slower ramp, longer soak * Do a better job of placing components
Electronics Forum | Fri Apr 24 07:55:12 EDT 2009 | davef
TOMBSTONING OF 0402 AND 0201 COMPONENTS: "A STUDY EXAMINING THE EFFECTS OF VARIOUS PROCESS AND DESIGN PARAMETERS ON ULTRA-SMALL PASSIVE DEVICES" Michael Yuen, Heather Benedict, Kris Havlovitz, and Tim Pitsch, Plexus Electronic Assembly Corporation, N
Electronics Forum | Fri Apr 24 10:21:57 EDT 2009 | ratsalad
I haven't seen those names in a while. I used to work with them; the ones from Plexus anyway. That must be from about 2000 or 2001, I think that's about when Michael Yuen left the company. I haven't read through this yet, but Mr. Yuen is a very sh
Electronics Forum | Wed Apr 29 08:32:08 EDT 2009 | davef
We'd expect the contract assembly houses in your area could do that soldering for you. Ooops, you said 'customer' that means you're a contract assembly house and don't want to give business to your competitor or give them a lead on your customer. Me
Electronics Forum | Thu Apr 23 21:07:09 EDT 2009 | luismolinero
Emilio: Several factors you need to take into account and your process parameters will depend on: Solder Alloy, Is there any Fine Pitch?; BGA?; Smaller chip size?. Tipically you should go for controls in: Solder Temperature and viscosity; blade and s
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