Electronics Forum | Tue Feb 08 11:09:44 EST 2005 | jdumont
Hi all, we're preparing for the switch to lead free and I was wondering how dangerous/harmful to our new wave oven it would be to run tin lead parts through the no lead wave. Will the lead build up and cause issues?
Electronics Forum | Fri Mar 11 12:19:50 EST 2005 | Carmine Garboza
I'd like to see the rotary vane vacuum which could suck up a column of molten tin/lead 2 inches in diameter...
Electronics Forum | Tue Mar 08 14:32:01 EST 2005 | jdumont
A wave machine mfg we are looking at is using this gas nitride treatment on all the 'wetted' parts to prevent the tin errosion of the underlying metal. Does anyone have any experience with this type of process. Any reliability/longevity data? Thanks
Electronics Forum | Thu Mar 10 13:05:41 EST 2005 | patrickbruneel
This phenomenon is caused by a high amount of halogens (Cl, Br etc.) used in the flux activators or in the flux surfactants. We've seen effects creating all colors of the rainbow. Changing to No-Clean (halide-free) will eliminate this color effect.
Electronics Forum | Tue May 03 21:49:45 EDT 2005 | KEN
Tin wiskers Electro migration all in the same week! (just kill me now God)
Electronics Forum | Thu May 05 16:02:43 EDT 2005 | russ
I don't believe that you are seeing black pad. I think you are seeing an oxidized pad from your statement that these pads take solder. I would guess that these will be fine. But I would re-tin all pads prior to attaching the BGA to make sure.
Electronics Forum | Thu Jun 16 22:03:39 EDT 2005 | davef
Doug: While your points are well taken, we've never heard of "bright tin" immersion plating. Electroplating is our bet.
Electronics Forum | Fri Jul 08 09:49:06 EDT 2005 | fctassembly
Hello Lupo, Can you confirm the alloy you are using is the nickel stabilized tin/copper alloy. Thanks, Bob
Electronics Forum | Thu Jul 14 03:01:37 EDT 2005 | fctassembly
Chris, The Asahi SCS7 is Asahi's attempt at copying the SN100C and is a tin/copper/silicon alloy that melts at 227C so no, it is not a low temperature lead free alloy.
Electronics Forum | Tue Aug 15 17:00:52 EDT 2006 | Board House
Bake your solder mask and then solder coat. If you are going to put an immersion finish like Osp, gold, tin or silver you would have to do a Micro etch to clean the copper prior to placing the surface finish. Regards, Board House
