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 Dec 19 20:40:08 EST 2002 | jonfox
One common practice, depending on what is on the other side of the PCB and how much heat you need to draw away from the part, is to manufacture a pseudo-heatsink into the board itself. It looks like a large tinned pad but has a dense array of vias f
Electronics Forum | Thu Dec 19 20:45:47 EST 2002 | jonfox
One common practice, depending on what is on the other side of the PCB and how much heat you need to draw away from the part, is to manufacture a pseudo-heatsink into the board itself. It looks like a large tinned pad but has a dense array of vias f
Electronics Forum | Mon Jun 20 09:12:55 EDT 2005 | davef
There's no easy answer. It depends on: * Thickness and size of the PCB in the array. * Means of separation. * Type of component. SMT components are more sensitive to the forces that need to be applied to separate the PCB. * Type SMT device. Ceram
Electronics Forum | Sun May 27 04:18:22 EDT 2007 | grantp
Hi, We are currently soldering only connectors, so there is not that much to do. For the wave we currently use palettes as we solder PCI cards but don't want to wash. So the palette keeps the flux off the board. My reasons for looking at changing o
Electronics Forum | Wed May 15 13:59:55 EDT 2019 | charliedci
If you are trying to remove/reduce warpage in the PCB (I am presuming) place in heated environment (170 F) for 24 hrs with weight on it to keep it flat. Has helped us in the past.
Electronics Forum | Wed Sep 26 14:58:46 EDT 2001 | bobm
i have stored boards in the refrigerator in side a tray (with a lid) for 2 days and still had them reflow with no problems. i don't know if i would go any longer than that. i would not put any qfp's or any other device that is moisture sensative dev
Electronics Forum | Wed Sep 08 20:48:28 EDT 2004 | Darby
Yes I agree with Russ about someone asking up front and everything else. Two tips. 1. Keep the marks at least 5mm in from the conveyor edges of the pcb so that clamping systems do not hide the mark. 2. Make sure the marks are eccentric around the pcb
Electronics Forum | Fri Dec 29 08:14:19 EST 2006 | joey_dragon
Thank you for the quick reply! Actually, the "type B" I referred to applies to a flex cable that can be found in this page: http://www.tennrich.com/trtw/cabling_3.php It is a reverse Engineering project and, from what I can see, there is, indeed,
Electronics Forum | Mon May 02 12:35:33 EDT 2016 | adamjs
Or try : http://www.sipad.com/ I think sipad is incredibly cool and would be the perfect solution, but is way too expensive. We're paying $0.80/each for four-layer ENIG boards, 50cm^2 with 0.125mm trace/space and 0.8mm-pitch LGA landings in lots of
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