Electronics Forum | Thu Jan 28 08:42:43 EST 1999 | Dave F
| i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated temperatu
Electronics Forum | Fri Jan 29 05:14:06 EST 1999 | Graham Naisbitt
Hi guys, I really am at a loss to understand this one. It would appear that there may be some reaction between the flux and the resist? Or maybe you have an OSP on the board that is reacting during soldering? As a fast fix, maybe you should try a
Electronics Forum | Thu Jan 14 21:24:35 EST 1999 | Bernie
Due to an foul up on my part, a circuit board ECO snuck up on me and I have a solder paste stencil that doesn't quite match the board. Two pads are off by about half a pad each. Can the solder paste stencil be modified? If so, what is the technique
Electronics Forum | Thu Jan 14 16:22:51 EST 1999 | MARC P
| For the engineers who enjoyed the last two quizs I put on my web page here are two more. One on printed board manufacture and one on rework and repair of surface mount boards. Its a bit of fun but I feel that on line training is coming and is the t
Electronics Forum | Wed Jan 06 21:56:37 EST 1999 | Steve Gregory
| Youse: This is SMTnet Steve. Sacrifice the socket. By the time you finish putzing-around removing the balls to get the socket off the board, replacing the lifted pads on the board, and reballing the socket; you've burnt the $100 that the socket
Electronics Forum | Wed Dec 16 19:37:19 EST 1998 | Ron Costa
I have a mixed technology board ranging from 50 mil pitch devices to 20mil Qfp's to PBGA-352 at 1.27mm, and 6 Intel uBGA-48 at 30 mil pitch. With all these different package types i'm torn between using a 4 or 5mil thick stencil. The ball dia. is 14
Electronics Forum | Thu Nov 19 08:14:36 EST 1998 | Martin Plourde
Hi, I presently have a friend (who doesn't have access to the net) who is on the edge of buying an Amistar AI-6448 and a CI-1000. He wants to know if programming these 2 types of PTH assemblers are easy to program, are they dependable, is board chan
Electronics Forum | Tue Nov 03 17:28:10 EST 1998 | smd
SMTnetters: My UIC conveyors aren't working with my: Omniflow 7 Reflow (Mfg 1/95) Dek 265 GS Philips CSM What can I do? Does anyone have experience with connecting UIC or other conveyors to the above equipment? On the reflow I jumped terminals 1
Electronics Forum | Sat Oct 31 22:55:59 EST 1998 | Kallol Chakraborty
| Can anyone help me out? I am looking for any information on In-line automatic optical inspection systems for SMT (not Bare Board). Does anyone have any thoughts which equipment is ok? I have visited MVT & cyberoptics sites but i would like more det
Electronics Forum | Mon Sep 28 09:35:28 EDT 1998 | Clive Heke
I have had some field failures returned recently, the boards had flux contamination under the components in a sensitive area, Nothing really visible until the component was removed, and the board had no evidence of rework of any type. Is it possib
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