Electronics Forum: index (Page 4131 of 7889)

Centre Board Support for Electrovert Wave

Electronics Forum | Wed Jul 16 06:38:17 EDT 2003 | Wave

We have acquired an UltraPak 600C wave machine and are investigating the possibility of installing a centre support wire conveyor to eliminate the use of pallets. What is involved in this project and how feasible is it? The boards have bottom side SM

Centre Board Support for Electrovert Wave

Electronics Forum | Thu Jul 17 11:34:35 EDT 2003 | pjc

� Center board support: - Stationary tension wire - Adjustable width and height position (manual) - Pneumatic raise/lower feature; extends through preheat and solder wave - Minimum board clearance on bottom preheater #1 is 63.5 mm (2.5 in.) with

Strain Gage Analysis tips

Electronics Forum | Mon Jul 21 16:06:02 EDT 2003 | davef

We doubt that stain gages will provide the granularity or repeatability to provide meaningful data. Contact: Cemal Basaran, Dr Associate Professor SUNY Buffalo Work: 716-645-2114 X2429 Fax: 716-645-3773 E-Mail: cjb@eng.buffalo.edu 243 Ketler Hal

CLEANING OXIDIZATION OFF OF WHITE TIN PADS

Electronics Forum | Wed Jul 23 08:21:55 EDT 2003 | James

Here we go again. I tried changing paste and that did nothing. Literally solder balled up and flew to the next pad. What would be a short term fix to use up all baards with white tin. Is there a fix if the board house did not manufacturer the boards

Reasonability of a request from an OEM for you CMs.

Electronics Forum | Sun Jul 20 09:05:33 EDT 2003 | davef

A reasonable request should receive a reasonable response. * If you request a failure analysis and corrective action, you should get one from your manufacturing group. * If you desire a detailed understanding of failure, you should use an outside gro

Panasonic Soft Beam

Electronics Forum | Thu Jul 17 18:32:05 EDT 2003 | wintech

I have got a 1995 machine and I need help programing, I do not have a manual to explane how and what to do. the machine does work as I have been able to look at the old programs and step through the data. but I would like some help. Thanks, Steve

Underfill Equipment

Electronics Forum | Fri Jul 18 10:04:32 EDT 2003 | jseagle

Hi all, I am looking for some recommendations on Underfill Equipment. Such as vendors, pumps, material, etc... We will be initially underfilling a 10mm x 10mm, 0.8mm pitch, 0.35mm ball uBGA on FR4 and going down in size and pitch from there. And

Cleaning

Electronics Forum | Wed Jul 23 10:44:40 EDT 2003 | ADAM

Guys I was wondering if anybody out there had any suggestions for cleaning populated pcbs that have been contaminated with salty sea water . There is alot of evidence of white residues and salt deposits on the pcb's. I've tried putting them through

Cleaning

Electronics Forum | Tue Jul 29 05:04:20 EDT 2003 | gregoryyork

Dear adam Sounds to me like it may not be Salt water contamination or even flux residue's, as both of these are commonly cleaned semi aqueosly or with IPA. Have you considered it may be Talcum powder used as fillers in solder resist, mineral salts

Nonwetting 0603's

Electronics Forum | Wed Jul 23 17:07:27 EDT 2003 | dbdavis

Dear Colleagues, I'm am experiencing some problems with nonwetting of primarily 0603 packages. The problem is infrequent but occures just enough for my QA dept. to notice. My reflow profile seems to be correct and the vast majority of parts solder f


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