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 | Tue Jun 20 10:29:14 EDT 2006 | Chunks
I was afraid so. Hand soldering wires in general is not difficult, but with your constraint of the space restriction it does make fairly hard to do. I am assuming you have a 2 sided board and stranded copper wire. So once solder starts to flow, th
Electronics Forum | Wed May 04 11:54:29 EDT 2005 | HOSS
Rob, Are you hinting that the lead content of this component with dipped tin/lead solder would not be an issue with RoHS? If so, our understanding is that the legislation requires that the 6 banned substances cannot exist at greater than X% in any
Electronics Forum | Mon Feb 20 09:20:07 EST 2006 | dpmilk
It appears to us that the problem lies in the lead-free solder paste rather than the inductors. We have not found a lead-free solder that does not do this. The green is on the copper wire. We believe it gets there during the reflow. The gasses fr
Electronics Forum | Thu Mar 04 17:10:19 EST 1999 | Earl Moon
| Our vendor proposed to supply us with shields made out of Cold Rolled Steel (CRS) electroplated with Sn (50 - 150 minches). Should I be concerned with solderability or are there a better alternatives to tin finish? | No matter the base metal, elec
Electronics Forum | Thu Oct 26 08:59:57 EDT 2000 | ptvianc
Performing a wetting balance test would be very difficult. The flux cored wire "configuration" is just not compatible with the methodology of the wetting balance test. If the wetting balance is a must, then you might ask the vendor for the flux for
Electronics Forum | Wed Aug 15 16:04:23 EDT 2001 | davef
First, responding to your question � Several things on copper dissolution in solder are: * A 50um copper wire will dissolve in 60Sn / 40Pb solder at: - 200�C solder in 55 seconds; - 250�C solder in 20 seconds; - 300�C solder in 5 seconds; - 350�C so
Electronics Forum | Tue Feb 12 10:33:45 EST 2002 | davef
IPC-4101 - Specification For Base Materials For Rigid And Multilayer Boards replaces MIL-P-13949 - Plastic Sheet, Laminated, Copper-Clad (For Printed Wiring) Taking a broader look, there are many �Obsolete MIL Document To Commercial Document� replac
Electronics Forum | Thu Jun 17 16:18:22 EDT 1999 | Earl Moon
| | Has anyone had problems with the Weller MT 1500 IRON/TIP solder station? | | Please advise your problem and resolution. | | | | ddj | | 6/16/99 | | | I don't like to use the needle tips (MT2 series), but the rest of the tips work fine. The MT2
Electronics Forum | Tue Aug 02 15:03:37 EDT 2016 | davef
On a previous black pad experience we soldered a wire to a fiducial and did a pull test to failure. On the black pad board the wire and solder pulled of clean leaving the fiducial on the board. On good boards the copper came off with the wire. If you
