Electronics Forum: /09 (Page 846 of 1632)

solder voids, pin holes.

Electronics Forum | Mon Aug 09 10:27:14 EDT 1999 | Tim Murphy

Just curious what effect pinholes and solder voids can have on solder joints that have high current passing thru them. Also could moisture from steam sterilization (autoclaving) get inside a said solder joint and then outgas during high current, and/

solder mask

Electronics Forum | Mon Aug 09 04:15:33 EDT 1999 | Jacqueline Coia

I am having cleaning problems when processing PCB's which have TAIYO solder mask on them. After processing, hand soldering and cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc. Other soldermasks do no

Re: Nepcon Texas, Anyone?

Electronics Forum | Fri Jul 30 17:18:09 EDT 1999 | se

Jennifer, Big players will be at APEX in March 2000, Long Beach CA, visit www.ipc.org for details. Word is Nepcon's being snubbed by alot of vendors in 2000, booth prices too high for too long. I'm not sure about SMI in San Jose, but I don't think t

Re: pcbce listing

Electronics Forum | Wed Jul 28 09:25:14 EDT 1999 | Clifford Peaslee

John, I'll take a look and see. It should let you know if there is anything missing from the form. Thanks for the report, Cliff | I'm having trouble posting a wanted item to the listing. I selected the listing catagory pages and then filled in th

Visual Inspection after SMD Placement and After Wave Solder

Electronics Forum | Thu Jul 15 09:34:24 EDT 1999 | John Sims

I'm looking into vision inspection equipment to automatically inspect SMD placement and solder joint quality. Does anyone have any recommendations or know of any commonly used equipment? Do other manufacturers use vision systems at their inspection

Re: dispensing paste for rework

Electronics Forum | Thu Jul 15 09:27:12 EDT 1999 | Erick Russell

Earl, Srt makes a system called the summit 2100D. Its a relatively new product but it is designed for rework applications. The programming is simple and interfaces well with other srt products. As with any dispensing system, you have to clean th

Re: 2 questions: via tenting and annular ring terminology.

Electronics Forum | Wed Jul 07 09:47:41 EDT 1999 | Peter Brant

| | Q #1) Is it more reliable to have the mask tent over the vias or risk getting vias half filled with solder? These are vias with an .020" hole and .040" or .050" pad. WIth regards to this question, and scott's follow up, I have used the "epoxy me

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Tue Jun 29 16:09:44 EDT 1999 | Dave F

| Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | Roberto: Leaching, according to the SMTnet Library of Terms: Leaching. Dissolution of a metal coating into liquid solder. Nickel barrier unde

Re: Pin Hole/Blow Hole - Causes and cure please

Electronics Forum | Fri Jun 25 09:43:24 EDT 1999 | Dave F

snip | | Dear John/Earl | | Thanks for your clarifications. To me also the problem does not seem to be linked with the PCB. The Pre heater temp. is set at | 450 degree C. We are using Alpha Aq. cleanable flux. Can you elaborate on the Desired

Re: bare board problem

Electronics Forum | Fri Jun 18 17:47:09 EDT 1999 | Scott Cook

| | Carson Valley Inn be hanged, | | | | Moonman | | | Carson Valley Inn, Wow they should have a plague there that says, "Mike Cox once Stayed here", Good Ol days | Mike, until 4 years ago when I built my current home and moved, I was STILL rece


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