62sn 36pb 2 solder

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What is this? I thought 63sn 37pb was the norm. What is with... - Sep 09, 2008 by Logannsan

Silver (Ag). It's a typical composition Regards, Vlad ... - Sep 09, 2008 by Vlad

Logannsan, you may want to check into this a little more ... - Sep 09, 2008 by BoardHouse

As far as I know, they rarely do it with Pb-bassed solders. ... - Sep 09, 2008 by Vlad

Actually it's not rare. I use several pastes from various m... - Sep 10, 2008 by Real Chunks

Isn't that the non-eutectic one that provides the pasty phas... - Sep 10, 2008 by Steve Thomas

That is exactly what I said. Rarely belongs to Cu or Ni :-) ... - Sep 10, 2008 by Vlad

Strange we use the 179~C eutectic 62/36/2 solder paste as st... - Sep 10, 2008 by BLT Circuit Services Ltd

The 2 % is Ag.It is added to prevent leaching silver from th... - Sep 11, 2008 by Mark

Logannsan

62sn 36pb 2 solder | 9 September, 2008

What is this? I thought 63sn 37pb was the norm. What is with the 2 at the end? Anyone know?

Vlad

62sn 36pb 2 solder | 9 September, 2008

Silver (Ag). It's a typical composition

Regards,

Vlad

BoardHouse

62sn 36pb 2 solder | 9 September, 2008

Logannsan,

you may want to check into this a little more with your customer to find out what 2 is.

It could be as Vlad say's 2Ag -silver, or it could be 2CU -copper or 2Ni- nickel.

Also check this form for 62Sn 36Pb 2Ag

just my 2 cent.

Regards,

Boardhouse

Vlad

62sn 36pb 2 solder | 9 September, 2008

As far as I know, they rarely do it with Pb-bassed solders. Pb-free may contain Cu or Ni (to improve test performance)

Vlad

Real Chunks

62sn 36pb 2 solder | 10 September, 2008

Actually it's not rare. I use several pastes from various manufacturers that add 2% silver in their leaded pastes. I would bet it's 2% silver.

Steve Thomas

62sn 36pb 2 solder | 10 September, 2008

Isn't that the non-eutectic one that provides the pasty phase range that people use to clobber their tombstoning problems?

Vlad

62sn 36pb 2 solder | 10 September, 2008

That is exactly what I said. Rarely belongs to Cu or Ni :-)

Vlad

BLT Circuit Services Ltd

62sn 36pb 2 solder | 10 September, 2008

Strange we use the 179~C eutectic 62/36/2 solder paste as standard in Europe. It is indeed 2% Ag in fact we dont sell 63/37 paste or very rarely. I think if you mix a little 60/40 powder with the 2% Ag alloy this overcomes the tombstoning problem.

Mark

62sn 36pb 2 solder | 11 September, 2008

The 2 % is Ag.It is added to prevent leaching silver from the end caps of components.This alloy like 63/37 is eutectic and has a reflow temp of 179�C whereas 63/37 is 183�C.