Electronics Forum: greens (Page 1 of 55)

PCB green mask darker

Electronics Forum | Mon Sep 14 23:10:22 EDT 2009 | linseeg

The PCB green mask will become darker after few times IR reflow? What is the reason? Any acceptance spec refer to green mask requirement? Any method to measure the color level for PCB green mask? By naked eye or machine?

Solder mask

Electronics Forum | Tue Dec 30 11:29:13 EST 2008 | davef

People use green soldermask because people use green soldermask. In the 1950s, the US military selected green, because they liked green better than other colors. So, here we are. We believe the performance of red and blue is comparable with green. T

what is the cause of green decay on the soldered wires

Electronics Forum | Mon Dec 26 23:19:29 EST 2005 | arnold

is there any term called on that corrosion or green contamination?

green contamination

Electronics Forum | Tue Jan 03 07:14:18 EST 2006 | Slaine

verdegree is the term used relaited to copper roofs turning green if its any help???

what is the cause of green decay on the soldered wires

Electronics Forum | Thu Dec 08 08:13:48 EST 2005 | grantp

Hi, Copper oxide is green right? So the green residue after a few days is corrosion of the wire? Regards, Grant

green contamination

Electronics Forum | Mon Dec 26 19:18:49 EST 2005 | arnold

I would to ask on what do you call on the color green contamination found on the soldered units. Whe i soldered some units after few days there was a color green on the wires. what do you call on this contamination?

Corroded ASIC's

Electronics Forum | Tue Jul 16 21:28:41 EDT 2002 | davef

Questions are: * What is this green material? * What does the green material look like? * What the impact of this material on the long-term reliability of your customer�s product? * What flux did you use to solder these boards? * How were the boards

Green vs Blue Soldermask

Electronics Forum | Thu Sep 03 09:00:52 EDT 1998 | James Horn

Can any one tell me if there is a large difference between green soldermask and blue soldermask, in reference to sending the board through the IR reflow oven. - two PCB's (smc parts) are manufactured, the first has green soldermask, the second blue s

Hand Soldering-Mixing Sn63 and L-F Processes

Electronics Forum | Thu Aug 11 07:41:55 EDT 2005 | rsmith@z-mar.com

I do recommend dedicated tips and dedicated workstations. Make sure that your tips come in with no lead in the tinning. There is a new, green heat resistant table mat that is being used in the industry to identify lead free areas. If operators see gr

green contamination

Electronics Forum | Fri Jan 06 09:22:23 EST 2006 | sarar

Here's an article our lab has published about green contamination - http://www.residues.com/pdfs/foresite_green.pdf If you are concerned with finding out just what is there and what the cause is, I would agree with davef that it would be helpful for

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