Tin coil 2.5 mm Sn63Pb37SW – 4 kg coil (WBZ BaTiLoy)
Sn63Pb37SW from Balver Zinn is a classic leaded solder alloy developed for professional soldering processes where high process stability, excellent wetting properties, and consistent solder results are crucial. This solid solder wire comes on a 4 kg coil with a diameter of 2.5 mm and is suitable for wave soldering, selective soldering, dip soldering, and tinning.
The eutectic Sn63Pb37 alloy has been the standard in electronics manufacturing for decades and is still used in many industrial applications where leaded processes are permitted or required.
Sn63Pb37 – the classic solder alloy of the electronics industry
Sn63Pb37 consists of 63% tin and 37% lead and is known for its precise melting point of 183 °C. As the alloy is eutectic, it transitions directly from solid to liquid without a plastic transition range.
This offers several significant advantages:
• Rapid solidification
• Low risk of cold solders
• Excellent wetting
• High process stability
• Consistent solder joints
• Proven reliability
The alloy continues to be widely used in electronics production, service, and maintenance.
Suitable for tinning and industrial soldering processes
The solid 2.5 mm solder wire is particularly suitable for:
• Wire tinning
• Dip soldering
• Wave soldering
• Selective soldering
• Solder bath maintenance
• Electronics production
• Industrial electronics
• Automotive electronics
The large 4 kg coil makes the product ideal for production environments with high material consumption.
High solder quality and excellent solder joints
Sn63Pb37SW is known for delivering strong and uniform solder joints with an attractive solder appearance.
Advantages include:
• Shiny solder points
• Good thru-hole filling
• Reduced risk of solder bridges
• High reproducibility
• Stable process over long production runs
This makes the alloy a reliable choice in productions with high demands for quality and process control.
Ideal for production and maintenance
The solid solder wire can be used for both tinning and as an additive material for maintaining solder baths.
The product is suitable for companies working with:
• Electronics production
• Cable production
• Industrial assembly
• Repair and service
• Production of electronic components
• High-volume production
The slightly smaller diameter of 2.5 mm provides faster remelting and more precise dosing compared to thicker solder wire, which can be an advantage for maintaining smaller solder baths or for tinning processes.
Advantages of Sn63Pb37SW
• Classic eutectic Sn63Pb37 alloy
• Leaded solder alloy
• Solid solder wire without flux
• Excellent wetting properties
• Shiny solder joints
• Suitable for tinning
• High process stability
• Good thru-hole filling
• Reduces the risk of solder bridges
• Supplied on a 4 kg coil
Technical specifications
Manufacturer: Balver Zinn
Product name: Sn63Pb37SW
Product type: Solid solder wire
Delivery form: Wire on coil
Wire diameter: 2.5 mm
Coil weight: 4 kg
Alloy type: Sn63Pb37SW
Composition: Sn63Pb37
Tin content: 62.5-63.5%
Lead content: Remainder
Melting point: 183 °C
Recommended working temperature: 245-300 °C
Application: Tinning, wave soldering, selective soldering, and dip soldering
Production standard: WBZ BaTiLoy
DIN EN ISO 9453: Alloy 102
RoHS compliant: No (leaded alloy)