Electronics Forum: white reside on circuit boards (Page 1 of 1)

adhesive on pads

Electronics Forum | Mon Apr 01 20:10:24 EST 2002 | davef

Oh. [Howabout if I smack you?] If ahma connectin� wif whut yer sayin�, you: * Don�t like the appearance of the glue slobberin� out from under the component even though there is no apparent glue on solderable surfaces. * Concerned about the hydrosco

Solder Spotting on Gold

Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis

This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder

Barcode printing on the PCB

Electronics Forum | Sat Mar 06 10:39:34 EST 1999 | Sam Sangani

I am looking for a barcode machine/printer which will print barcode directly on printed circuit boards with non transferable white ink. This has to be done before PCB assembly. Any help will be appreciated. Please reply directly to my E-mail. S

Barcode printing on the PCB

Electronics Forum | Fri Mar 12 19:09:21 EST 1999 | Jess Baker

Manufacturers who have to mark barcodes onto PCB's without secondary application of pressure sensitive labels can etch it on, screen it on, inkjet it on, use laser marking, or a combination of those. Using a laser marker to write a code into a label

Re: Barcode printing on the PCB

Electronics Forum | Fri Mar 12 13:41:06 EST 1999 | stefano bolleri

| I am looking for a barcode machine/printer which will print barcode directly on printed circuit boards with non transferable white ink. This has to be done before PCB assembly. | | Any help will be appreciated. | Please reply directly to my E-mai

Re: White layer appearance on PCB

Electronics Forum | Thu Jan 28 20:00:54 EST 1999 | Dave F

| Okay, | | Another question, if the soldermask in not cured, then it is washed will water ingress (from wash or ambient ) play havoc with capacitance or dielectric of PCB. I mean will my crystal and clock circuits start "Y2K'n" on me. OR will my P

Re: White layer appearance on PCB

Electronics Forum | Thu Jan 28 16:29:03 EST 1999 | Tom B

Okay, Another question, if the soldermask in not cured, then it is washed will water ingress (from wash or ambient ) play havoc with capacitance or dielectric of PCB. I mean will my crystal and clock circuits start "Y2K'n" on me. OR will my PCB go

Re: BGA In-circuit Failure Analysis

Electronics Forum | Mon Jun 08 11:39:28 EDT 1998 | Earl Moon

| How do I mechanically/visually inspect BGA devices when they are soldered to a PCB for possible solder, or other, defects as a first step before part removal and further analysis? I have had board failures due to poor soldering--I think? I can pr

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