SAC (Tin-Silver-Copper) solders are lead-free alloys commonly used in electronic soldering. They are favored for their mechanical strength, thermal fatique resistance, and eco-friendliness.
Composition & Variants:
SAC solder consists primarily of tin (Sn), silver (Ag), and copper (Cu). The most common variants include:
- SAC 305 (3% silver, 0.5% Copper) - widely used due to its balance between cost and performance.
- SAC 405 (4% silver, 0.5% Copper) - offers slightly better mechanical properties, but often higher cost.
- SAC 0307 (0.3% Silver, 0.7% Copper) - lower silver content often makes it more affordable while maintaining good solderability
- SAC 387 (3.8% Silver, 0.7% Copper) - similar to SAC 305 but the additional silver and copper content add additional strength
Advantages of SAC solders:
- Lead-free & Environmentally friendly - Compliant with RoHS regulations, reducinghealth risks
- Strong Mechanical Properties - Performs well under temperature cycling
- Lower Melting Point - Allows for easier processing and reduced energy consumption
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SAC405 Solid 3/32" x 1/2 lb spool$58.00Kapp Alloy's SAC405 solid solder comes in a 3/32" (2.4mm) diameter, 1/2 lb spool with a 95.5% Sn/ 4% Ag/ 0.4% Cu composition. It's NSF compliant, lead-free, and cadmium-free, making it safe for potable water applications. With a low melt point of 423°F / 217°C, it creates strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 7,540 psi. It's also widely used in electronics for reflow, wave, hand, and BGA soldering applications.
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SAC405 Solid 1/16" x 1/2 lb spool$58.00Kapp Alloy's SAC405 solid solder comes in a 1/16" (1.6mm) diameter, 1/2 lb spool with a 95.5% Sn/ 4% Ag/ 0.4% Cu composition. It's NSF compliant, lead-free, and cadmium-free, making it safe for potable water applications. With a low melt point of 423°F / 217°C, it produces strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 7,540 psi. It's also widely used in electronics for reflow, wave, hand, and BGA soldering applications.
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SAC387 Solid 3/32" x 1/2 lb spool$58.00Kapp Alloy's SAC387 solid solder wire comes in a 3/32" (2.4mm) diameter, 1/2 lb spool with a 95.5% Sn/ 3.8% Ag/ 0.7% Cu alloy composition. NSF compliant and lead-free, it melts at just 426°F / 219°C, making it a reliable choice for potable water systems using copper, brass, or stainless steel. It delivers tensile strengths up to 7,511 psi with strong vibration and stress tolerance. Also widely used in electronics for wave soldering, selective soldering, SMT, and high-performance applications requiring consistent, corrosion-resistant joints.
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SAC387 Solid 1/16" x 1/2 lb spool$58.00Kapp Alloy's SAC387 solid solder wire is a lead-free, cadmium-free, NSF compliant alloy made from 95.5% Sn, 3.8% Ag, and 0.7% Cu. This 1/16" (1.6mm) diameter, 1/2 lb spool melts at just 426°F / 219°C, making it a reliable choice for copper, brass, and stainless steel joints in potable water applications. With tensile strength up to 7,511 psi and high tolerance to vibration and stress, it also performs well in wave soldering, selective soldering, SMT, and high-performance electronics applications.
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SAC0307 Solid 3/32" x 1/2 lb spool$58.00SAC0307 is a lead-free, cadmium-free solder with a 99% Sn / 0.3% Ag / 0.7% Cu composition, available in a 3/32" (2.4mm) solid wire on a 1/2 lb spool. NSF compliant and potable water safe, it melts at 423°F / 217°C, producing strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 4,278 psi and solid resistance to vibration and stress. Also widely used in electronics for wave soldering, mixed technology boards, and cost-effective rework applications.
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SAC0307 Solid 1/16" x 1/2 lb spool$58.00SAC0307 is a lead-free, cadmium-free solder with a 99% Sn / 0.3% Ag / 0.7% Cu composition, available in a solid 1/16" (1.6mm) diameter, 1/2 lb spool. NSF compliant and potable water safe, it melts at just 423°F / 217°C, producing strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 4,278 psi and high tolerance to vibration and stress. Also widely used in electronics for wave soldering, mixed technology boards, and cost-effective rework applications.
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SAC305 Solid 3/32" x 1/2 lb spool$58.00Kapp Alloy's SAC305 solid solder wire comes in a 3/32" (2.4mm) diameter on a convenient 1/2 lb spool. This lead-free, cadmium-free alloy melts at 423°F / 217°C, making it a practical choice for copper, brass, and stainless steel applications. NSF compliant and potable water safe, it delivers tensile strengths up to 7,035 psi with solid vibration and stress resistance. Widely used in electronics for reflow soldering, through-hole, and wave soldering in RoHS compliant assemblies.
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SAC305 Solid 1/16" x 1/2 lb spool$58.00SAC305 solder in a solid 1/16" (1.6mm) diameter, 1/2 lb spool is a lead-free, cadmium-free alloy built for reliable performance in electronics manufacturing. It melts at 423°F / 217°C, forming strong, ductile joints with tensile strengths up to 7,035 psi and solid resistance to vibration and stress. Compatible with reflow soldering, through-hole, and wave soldering processes, it supports RoHS-compliant assembly across a range of surface-mount and leaded component applications.
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SAC405 Solid 1/32" x 1/2 lb spool$71.00SAC405 solid solder wire in 1/32" (0.8mm) diameter comes on a convenient 1/2 lb spool, made with a 95.5% Sn/ 4% Ag/ 0.4% Cu alloy. It's NSF compliant, lead-free, and cadmium-free, making it potable water safe. With a low melt point of 423°F / 217°C, it forms strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 7,540 psi. Suitable for reflow, wave, hand soldering, and BGA applications in electronics manufacturing and repair.
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SAC387 Solid 1/32" x 1/2 lb spool$71.00SAC387 solid solder wire (1/32" / 0.8mm diameter, 1/2 lb spool) is a lead-free, cadmium-free alloy composed of 95.5% Sn, 3.8% Ag, and 0.7% Cu. NSF compliant and potable water safe, it melts at 426°F / 219°C, producing strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 7,511 psi and high vibration tolerance. It's also widely used in electronics for wave soldering, selective soldering, and SMT applications where reliable, corrosion-resistant joints are required.
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SAC0307 Solid 1/32" x 1/2 lb spool$71.00SAC0307 is a lead-free, cadmium-free solder alloy made from 99% Sn, 0.3% Ag, and 0.7% Cu. NSF compliant and potable water safe, it melts at 423°F / 217°C, producing strong, ductile joints on copper, brass, and stainless steel with tensile strengths up to 4,278 psi and high tolerance to vibration and stress. Available in a 1/32" (0.8mm) solid wire on a 1/2 lb spool, it's well-suited for wave soldering, mixed technology boards, and rework applications in electronics.
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SAC305 Solid 1/32" x 1/2 lb spool$71.00Kapp Alloy's SAC305 solid solder wire comes in a 1/32" (0.8mm) diameter on a convenient 1/2 lb spool. This lead-free, cadmium-free alloy melts at 423°F / 217°C, making it a practical choice for electronics work including reflow soldering, wave soldering, and hand soldering applications. RoHS compliant and NSF certified for potable water systems, it delivers tensile strengths up to 7,035 psi with strong resistance to vibration and stress on copper, brass, and stainless steel.
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