Electronics Forum: process parameter setting for sm%7 (Page 1 of 1)

Predictive Models for solder defects

Electronics Forum | Thu Jul 23 16:49:04 EDT 1998 | Ted

I was wondering how successful industry has been in quantifying relationships between defects rates of particular solder problems (like bridging, opens,..) and PCA design parameters (like spacing, part orientation, pad dimensions, ...). For wave sol

Need Help for CCGA Rework

Electronics Forum | Tue Nov 01 15:26:43 EST 2005 | GS

Is it this your first experience of C-CGA RWK ? In order to approach a RWK of this kind of pakage it requires a capable process and clear operating procedure. In the past, the company who I use to work for, we rwkd plenty of this kind of CCGA. Earl

SPC for Wave solder (defects on PCB's)

Electronics Forum | Wed Feb 15 08:47:09 EST 2006 | pjc

Yes, doing the DoEs on your wave to achieve optimum settings that deliver the best results on your worst board is correct method. If not clear on the process, there are still wave solder process classes out there you can attend or hire in-house. If y

Re: Solder Paste Dispensing for BGA repair

Electronics Forum | Fri Nov 26 06:18:18 EST 1999 | stefano bolleri

Jeff & Ted, we have used a dispensing system too and yes, I agree, we are not too happy with the results. Not at the point that it doesn't work, though. I think our problem basicly is that we have selected an entry-level dipensing system. We are app

Optimal Speed for Universal Chip Shooters

Electronics Forum | Wed Jun 11 16:30:33 EDT 2003 | T.Vick

You have received some great feedback so far. I would like to summarize and add a few points regarding maintenance. You should start (as recommended already) by verifying your component library data. Using the default values from the master library i

SMT Programming - Parts Database set-up for contract manufacturer

Electronics Forum | Wed Feb 09 16:09:06 EST 2000 | Doug

Does anyone have any ideas on setting up a parts library/database on an SMT line? We would like to identify a particular part by it's package style, instead of by the customer's part number, in order to reduce the amount of entries in the library.

Re: Screen printing glue for wave soldering SMT components.

Electronics Forum | Fri May 26 05:54:40 EDT 2000 | Sal

For the past year now we have been printing adhesive with no real problems. Our printing ranges from 0603's to SOIC using a variation of aperture sizes and metal thickness foils. The crucial parameters are : aperture sizes : These obviously depend o

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