[Solder bar・Solder wire] Alloy line up

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Solder bar・Solder wire

Alloy name	Alloy composition	Melting point(℃)		Usage
Alloy name	Alloy composition	Solidus temperature	Liquidus temperature	Usage
S1	Sn	232
A2	Sn-5Sb	235	240
K2	Sn-3.5Ag	221		Sn-Ag eutectic alloy
K3	Sn-3.0Ag	221	222	For additional input when Sn – 3.0 Ag – 0.5 Cu in a dip tank.
K5	Sn-0.3Ag	221	231	For additional input when Sn – 0.3 Ag – 0.7 Cu in a dip tank.
K7	Sn-1Ag	221	228	For additional input when Sn – 1.0 Ag – 0.7 Cu in a dip tank.
J2	Sn-3.5Ag-0.55Cu	217	220
J3	Sn-3.0Ag-0.5Cu	217	220	JEITA recommended alloy
J7	Sn-1Ag-0.7Cu	217	224	Low silver solder alloy
F2	Sn-1.5Ag-0.85Cu-2.0Bi	210	223
F6	Sn-2.5Ag-0.5Cu-1.0Bi	213	218
R2	Sn-0.55Cu	226		Sn-Cu eutectic alloy
R3	Sn-0.55Cu-β	226		R2 wetting countermeasure item
R4	Sn-0.3Ag-0.7Cu	217	226	JEITA recommended low silver solder alloy
R23	Sn-3.0Cu	227	309	Copper eating measures
R25	Sn-5.0Cu	227	358	Copper eating measures (for dip)