Thailand Smelting and Refining Co., Ltd.

Standard Solder Alloy Compositions

Lead Free Solder

Grade	Sn	Pb	As	Bi	Cu	Fe	Ag	Sb	Zn	Cd	Al	Ni
SAC0307	Rem	0.05	0.03	0.03	0.65-0.75	0.02	0.25-0.35	0.05	0.002	0.001	0.002	0.005
SAC305	Rem	0.05	0.03	0.03	0.30-0.70	0.02	2.80-3.20	0.05	0.002	0.001	0.002	0.005
SAC405	Rem	0.05	0.03	0.03	0.30-0.70	0.02	3.70-4.10	0.05	0.002	0.001	0.002	0.005
Sn97Ag3	Rem	0.05	0.03	0.03	0.03	0.02	2.80-3.20	0.05	0.002	0.001	0.002	0.005
Sn97Cu3	Rem	0.05	0.03	0.03	2.50-3.50	0.02	0.015	0.05	0.002	0.001	0.002	0.005

Other leaded free solder alloy compositions and lower impurity levels are available upon request.

Leaded Solder

Grade

Sn

Pb

As

Bi

Cu

Fe

Ag

Sb

Zn

Cd

Al

TEQ63A 62.5-63.5 Rem 0.03 0.03 0.03 0.02
0.015

0.10
0.002 0.001 0.002

TEQ60A
59.5-60.5
Rem 0.03 0.03 0.03 0.02
0.015

0.10
0.002 0.001 0.002

ASTM63A
62.5-63.5
Rem 0.03 0.25 0.08 0.02
0.015

0.12
0.002 0.001 0.002

ASTM60A
59.5-60.5
Rem 0.03 0.25 0.08 0.02
0.015

0.12
0.002 0.001 0.002

ASTM35A
34.5-36.5
Rem 0.02 0.25 0.08 0.02
0.015

0.50
0.002 0.001 0.002

ASTM30A
29.5-31.5
Rem 0.02 0.25 0.08 0.02
0.015

0.50
0.002 0.001 0.002

ASTM20A
19.5-21.5
Rem 0.02 0.25 0.08 0.02
0.015

0.50
0.002 0.001 0.002

SnXA
X+/-0.5
Rem 0.03 0.03 0.03 0.02
0.015

0.10
0.002 0.001 0.002

Other leaded solder alloy composition and lower impurity levels are available upon request.

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