Sn63Pb37 T3 solder powder

Sn63Pb37 T3 solder powder is a classic eutectic plumb bobwhich consists of 63 % Tin and 37 % Lead consists of. With a precisely defined melting point of 183 °C it offers precise process control without a melting interval. The T3 grit (25-45 µm) enables stable paste rheology and reproducible results in SMT and reflow applications.

Properties and advantages

• Eutectic composition: Defined melting point (183 °C) without transition range, ideal for precise processes.
• Very good wettability: Clean, even solder joints even with complex layouts.
• T3 grit: Good balance between flow behaviour and paste homogeneity.
• Reliable solder joints: High process reliability in series production and reflow applications.
• Traditional standard plumb bob: Proven in electronics production for decades.

Areas of application

Electronics production & SMT

Sn63Pb37 T3 is one of the most frequently used solders in the Semiconductor Technology & Electronics. It impresses with precise temperature control and stable solder joint quality.

Automotive industry

In the Automotive industry Sn63Pb37 T3 is used for control units, sensors and cable connections, where proven tin-lead alloys are still in demand.

Hard & soft soldering

Also in the Hard & soft soldering Sn63Pb37 T3 is used when reproducible results at moderate temperatures are required.

Electrical engineering

In the Electrical engineering it is used for assemblies and component connections that require consistently high soldering quality.

Technical properties

• Composition: Sn 63 %, Pb 37 %
• Melting point: 183 °C (eutectic)
• Grain size: T3 (25-45 µm)
• Particle morphology: Spherical for even paste application
• Purity: Controlled quality with low oxidation tendency

Sustainability & regulation

Sn63Pb37 is a leaded solder and therefore not RoHS compliant. It is used in Speciality and industrial sectors where the advantages of eutectic alloys are valued and legally permitted. NMD supplies this powder exclusively for authorised applications.

Conclusion

Sn63Pb37 T3 solder powder is the classic choice for precise, clean solder joints in electronics, electrical engineering and automotive construction. With its eutectic composition, defined melting point and T3 grain size, it is a proven solder for reliable results. Further fields of application can be found in the Semiconductor Technology & Electronics and in the Hard & soft soldering.