Electronics Forum | Tue Jul 04 21:56:23 EDT 2017 | anhsang38
Hi Everyone I wonder know the effect of copper in solder paste, solder bar. Thanks.
Electronics Forum | Wed Sep 27 10:02:24 EDT 2006 | aj
Hi, We are using SACX and have not noticed any rise in copper. I do know that there are Solder Bars available without the Copper to try and bring the level under control. aj...
Electronics Forum | Thu Oct 05 12:52:34 EDT 2006 | Mario Scalzo, SMT CPE
Good afternoon! Typically, we normally recommend testing the pot, and adding either Sn/Ag or just Sn to keep it at bay. One nice thing about the solubility of Cu in Sn based alloys is that it should reach a theoretical upper limit of about 0.1%. I
Electronics Forum | Mon Mar 07 20:22:05 EST 2005 | KEN
Here are some general rules for lead free wave solder: Noble aloys will cost more. Period. The cheapest metal on earth is lead. Costs can only go up in Lead Free. Consumer grade and class 2 electronics will most likely use Tin / Copper for wave.
Electronics Forum | Thu Feb 01 03:02:50 EST 2018 | robl
Hi Rob, > > I did check with the board house, and > the confirmed that there was no Nickel plating, > but that the silver went straight onto the copper > in their immersion silver > process. > > Interestingly I've even tested an > unplated sam
Electronics Forum | Fri May 12 12:07:10 EDT 2006 | solderiron
The kester better known as KY'd Sn/Cu has more copper intermetallic growth over time, dissolves copper from the board faster so repairing and touchup can damage board. Bridges more than SN100c. Does not thermal cycle well. Has shrink cracks that can
Electronics Forum | Tue Mar 31 19:50:22 EDT 2009 | davef
8 bar is over 100 psi. What are you using that much pressure? So, your piping is made of what material? * Black iron * Copper Can you run soft pressure piping to by-pass the section that requires sealing?
Electronics Forum | Thu Mar 04 18:39:54 EST 2021 | SMTA-64387124
I have successfully used laser marked bar codes on PCBs. Use an area without any copper so that you are marking on the FR4 only
Electronics Forum | Fri Jul 30 14:50:26 EDT 1999 | Kevin Hussey
| I received a request from customer to assemble ceramic substrate (alumina oxide)that printed with a low temperature Copper thick film conductor (the overglaze layer is polymer). The Copper pads are exposed without any coating. | This ceramic substr
Electronics Forum | Fri Jul 30 16:02:49 EDT 1999 | Earl Moon
| | I received a request from customer to assemble ceramic substrate (alumina oxide)that printed with a low temperature Copper thick film conductor (the overglaze layer is polymer). The Copper pads are exposed without any coating. | | This ceramic su
