Electronics Forum | Tue Jan 03 07:12:22 EST 2006 | Slaine
on church copper roofs they call the green stuff verdigree (dont know if ive spelt it right)
Electronics Forum | Wed Dec 07 12:28:37 EST 2005 | PWH
I have seen problems similar to this caused by too high concentration of cleaning solution used in ultra-sonic cleaning process. If cleaning solution is used, make sure it is compatible with solder process. Also, improper mixing of fluxes and solde
Electronics Forum | Thu Dec 08 22:25:23 EST 2005 | davef
Grant Copper Oxide [Cu2O]: Color is red to a deep red that can appear almost black. Luster is adamantine or submetallic to dull or earthy if massive. Transparency: Crystals are transparent to translucent. Look here: http://mineral.galleries.com/min
Electronics Forum | Wed Dec 07 07:20:02 EST 2005 | davef
We need more information about the situation. For instance: * Describe the green residue * Talk about the distribution of the problem, including a single lot or from various lots and over components and component types on the board * Tell us about t
Electronics Forum | Thu Feb 16 13:03:52 EST 2006 | Tom Winchell
Assuming the AL tape shorts the wires for the thermocouple, you effectively have three junctions at the business end of the wire: wire 1 to AL, wire 2 to AL, and wire 1 to wire 2. If the temperature of the junctions wire 1 to AL and wire 2 to AL are
Electronics Forum | Thu Dec 30 09:56:04 EST 1999 | Judy Forbes
Preleg wire is an epoxy coated wire. Is there an IPC standard or general rule for how Preleg wire (30 Awg) should be tacked down? Should it be tacked down every 1" as is regular wire - Or should it be tacked the whole length of the wire?
Electronics Forum | Thu Mar 11 13:09:52 EST 2021 | processman
Hello, Hoping for some help, we have Hesse BJ820 wirebond machine and after changing to new spool of wire the wire snaps after first bond. Anyone have any idea ? Wire is in date and no change in machine setup, just change spool of wire.
Electronics Forum | Tue Oct 04 20:31:16 EDT 2016 | davef
IPC-7721, Section 6.1, Jumper Wires, Jumper Wire Selection #5 states: "Recommended wire is solid, insulated, plated copper wire, 22 to 32 AWG with a heat resistant insulation. Wire with tin-lead plating may be restricted due to environmental laws."
Electronics Forum | Thu May 18 03:15:32 EDT 2017 | wama
We are soldering wire 26AWG to jack socket. However after went through washing, baking, coating, curing processes the wire breaks (at joining point with jack socket) during wire dressing. We have tried to increase and decrease the solder amount but r
Electronics Forum | Fri Jun 29 09:58:19 EDT 2001 | edmentzer
We use 30 and 32 gauge PTFE wire. The insulation will not melt with normal hand soldering temps. The wire was made by Thermax/CDT. Their phone number is 800-423-5873. The only problem with the wire is that is hard to glue to the board. We use Ta
