Electronics Forum | Wed Mar 02 13:15:16 EST 2022 | chris007
I am currently working on a manufacturing flow where some PCBA are processed with reflow oven (after being baked before processing), then cleaned with bath, then passed into contaminometer, passed into AOI. The point is after all of this, if AOI dete
Electronics Forum | Mon May 31 15:09:56 EDT 1999 | JohnW
| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi
Electronics Forum | Mon May 31 15:10:14 EDT 1999 | JohnW
| | | | | | | | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processi
Electronics Forum | Wed Oct 10 13:49:12 EDT 2001 | stepheno
I recently started at a new company. They have a variety of bare PCB's and most have aprox. 20 variations. Maybe about 1/3 of each board on average are non-populated locations. They buy one stencil for each PCB but then use scotch tape to block of
Electronics Forum | Wed Oct 06 11:52:45 EDT 2004 | Mike Konrad
You state that you need a washer for �pcb washer/cleaner for misprints etc� Is it only for misprints or is it also for post-reflow de-fluxing? I would not suggest that you utilize one machine for both applications. Misprints should always be cle
Electronics Forum | Fri Sep 08 22:48:48 EDT 2017 | ttheis
UL listing is handled by the customer typically. I am assuming you are a contract manufacturer producing only a component pcb assembly for use in a product final assembly and not the final product itself. We are a manufacturer that does our own popul
Electronics Forum | Fri Mar 14 13:09:33 EST 2003 | Dman
Does anyone know of any free software that would allow an inspector to look for a reference designator on a densely-populated PCB? The software would need to accept a CAD pick'n'place file as input, and highlight the part when the inspector enters t
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
Electronics Forum | Mon Mar 13 08:46:49 EST 2006 | geocominc
Yes, All six new (LF ready kit) thermocouples are tested good.I would like to say boards are populated on both side back to back with two heavy PLCC's side by side just like having heatsinks and ground plane.Some Odd design.Next try will be to have a
Electronics Forum | Fri Nov 16 08:46:30 EST 2007 | jdengler
For very simple boards, 2 layers lightly populated with light thermal mass, we still use FR4. For most of our Pb-Free boards we use the higher Tg material with moisture-resistant packaging. We are a CM so we don't usually get to change many of the
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