Electronics Forum | Fri Oct 16 21:17:04 EDT 1998 | Scott McKee
| | With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to over
Electronics Forum | Thu Oct 11 22:25:50 EDT 2001 | davef
Bruce I�m with yall. Designers and fabricators say �pins�. You say: * BGA pins are 1mm [0.039�] pitch. * BGA pads are 0.4mm [0.0157�] diameter. * BGA pins are 0.6 mm [0.024�] side-to-side. * Board thickness is ~0.4 mm [0.015�] First, as you can
Electronics Forum | Mon Jul 31 09:11:56 EDT 2017 | davef
Try: * YUSH Electronic Technology Co.,Ltd [http://www.pcbpunchingmachine.com/product-833.html ] * Asc Electronics & Technology Co., Ltd. [http://www.ddfcc.com/sell-1988453-v-cutting-machine-for-aluminum-board-fr4-singulating-pre-scored-pcba-asc-509
Electronics Forum | Mon Feb 20 15:50:33 EST 2012 | ccross
If the FR-4 Material used for PCBs recyclable? If so, who is doing it?
Electronics Forum | Thu Jun 24 23:57:42 EDT 2004 | George
Could anyone tell me the difference in PCB material Nelco13 and FR4? PCB dielectric material Nelco13 is quite new for me and I knew nothing about it. For imcoming quality control (IQC), I am asked to identify PCB made of FR4 and Nelco13. How to do th
Electronics Forum | Sun Apr 25 08:46:57 EDT 2004 | Roni H.
Hello, Does anyone heard of "F2" or "GV" as replacement materials for FR4?? I'll be glad to have any information regarding this issue. Thanks Roni H.
Electronics Forum | Sat Nov 04 21:30:15 EST 2006 | Ola
Well, I can't tell you what the "glass wicking failure on PCB" are but for a standard FR4-pcb the Tg temp. or the so called glass temp. is 176 celcius degr. This means that the pcb is in between a firm and a buoyant condition. This is really a bit of
Electronics Forum | Tue Apr 08 15:27:33 EDT 2008 | arminski
hi experts, need more info on what's happening with the LPI Solder Mask on an FR4 PCB during reflow of both Leaded and Lead Free Process? Do they become soft as well while exposed to the extreme temperatures? regards,
Electronics Forum | Wed May 03 16:37:10 EDT 2017 | charliedci
I don't believe there should be any issues with the HASL finish. The issue is how long on the shelf and is a bake out required to remove moisture from PCB, as in any FR4 PCB's that may have had time to absorb moisture.
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