Electronics Forum | Wed Jul 09 15:56:14 EDT 2003 | Matt Kehoe
Hi Dave, Hmmm, pix F2? Do you meran figure 2 or second picture? The second picture is the bare board before printing. Gold plated pads. Is that what you mean? mk
Electronics Forum | Thu Jul 10 09:55:47 EDT 2003 | davef
A reading of the pictures is: A1: Looks like pad [B1] is smaller than the other pads. It�s weird that the pads are such different colors. A2: Looks like pad [B1] is smaller than the other pads. Solder mask opening [B1] is misregistered and seems s
Electronics Forum | Wed Jul 09 16:01:10 EDT 2003 | russ
Mike, the one pad that is "small" definitely appears to be over etching (It looks like it was supposed to be much larger). What is the dims of this little bugger as compared to the Gerber? i would also tend to believe that there probably is some mask
Electronics Forum | Mon Aug 27 15:06:29 EDT 2001 | davef
This otta push Wolfgang over the top ... Recommended reading G.G. Harman, Wire Bonding in Microelectronics : Materials, Processes, Reliability, and Yield, 2nd edition, McGraw-Hill Electronic Packaging and Interconnection Series, 1997. G.G. Harman, R
Electronics Forum | Sat Sep 18 12:27:21 EDT 1999 | Earl Moon
| | | Dave, I'll respond by paragraph: | | | | | Brian: | | | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like habanero slathered shiitake
Electronics Forum | Sat Sep 18 04:42:52 EDT 1999 | Brian
Dave, I'll respond by paragraph: | | | Brian: | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like habanero slathered shiitake burritos through
Electronics Forum | Sat Sep 18 13:05:57 EDT 1999 | Brian
| | | | | | Dave, I'll respond by paragraph: | | | | | | | Brian: | | | | | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like habanero slath
Electronics Forum | Sat Sep 18 14:37:00 EDT 1999 | Earl Moon
| | | | | | | | | Dave, I'll respond by paragraph: | | | | | | | | | Brian: | | | | | | | | I like Ag2 also. I prefer it over both 63/37 and 60/40, if the price is not a factor. Yes, gold rips through eutectic and near-eutectic solders like
Electronics Forum | Fri Sep 17 06:01:12 EDT 1999 | Earl Moon
| | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a re
Electronics Forum | Fri Sep 17 09:54:40 EDT 1999 | Brian
| | | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a
