Electronics Forum | Thu Dec 26 12:41:53 EST 2019 | emeto
We agree with your statements. 1. Having manually printed board will compromise your print and you don't know how much paste you have on each pad. 2. LEDs falling off that easily might be related to contamination, considering that your profile is not
Electronics Forum | Wed Dec 04 10:59:04 EST 2019 | dwl
The solder looks a little grainy for Sn/Pb solder but that might just be the picture quality. There appears to be plenty of solder on the pads, so I'd rule out anything to do with the stencil. One possibility that springs to mind; how long is your
Electronics Forum | Tue Dec 03 18:51:57 EST 2019 | kylehunter
Hi all, We are having a confusing defect with one of our client's boards. It is a large board, 30" x 12". The client supplies the LEDs, they are cheap overseas diodes, and it is not uncommon to have reels with the packaging torn. We have w
Electronics Forum | Thu Nov 14 10:03:40 EST 2002 | davef
Doug, Ooooooooo. You're correct Vinny has to be talking about Rogers teflon boards. Vinny, There are many different types of PTFE based products. Generally speaking, PTFE has a melting point of 620degF and withstands solder reflow and HASL proce
Electronics Forum | Wed Nov 13 21:16:28 EST 2002 | Vinny
Hi All, I am producing a lot of high cost PCBA where the pCB material is the `ROGER' material. Due to some of the high components and handling we get pad lifted issues sometimes and as of now are unable to do repairs on these. Please help if anybo
Electronics Forum | Thu Nov 14 08:28:11 EST 2002 | dphilbrick
Rogers is a PWB materials manufacturer based in CT. they make a lot of unique materials for PWB fab such as a 1 time bendable PWB.
Electronics Forum | Thu Nov 14 08:30:34 EST 2002 | dphilbrick
Vinny I would call Rogers. Depending on what materail of theirs you are using it may require special processing. I would also send them one of your boards with defects they could probably tell you how to stop that from happening.
Electronics Forum | Thu Nov 14 08:53:44 EST 2002 | MA/NY DDave
Hi As DaveF suggested I would contact a shop that has done repair. You should have the PCB/PWB Print and laminate information with you when you make the call. Ask the repair shops if they have continual experience with the Rogers Material you are us
Electronics Forum | Thu Nov 14 14:16:01 EST 2002 | MA/NY DDave
Hi It doesn't have to be the the microwave Rogers Duroid(spelling?) material. Rogers does make other materials. Even though the material you suggested was also one my initial thoughts, I figured it better for him to go to a shop that has current exp
Electronics Forum | Wed Nov 13 22:30:05 EST 2002 | davef
Methods for performing repairs: * 7721 - Repair & Modification of Printed Boards & Electronic Assemblies. * On-line guides at Circuit Repair Technology [ http://www.circuittechctr.com ] site. Roughly from East to West, service companies that perfor
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