Tin Solder Wire Sn63Pb37 FG 2.2% REL0 0.5 mm 500 g
Sn63Pb37 FG is a professional flux-cored solder wire from Balver Zinn, developed for hand soldering, rework, service, and electronics production, where high demands are placed on precision, solder quality, and process stability. The combination of the classic Sn63Pb37 alloy and a REL0-classified flux ensures rapid wetting, uniform solder joints, and an efficient soldering process.
The fine wire diameter of 0.5 mm makes the product particularly suitable for precision soldering, smaller solder points, SMD components, and electronics work where precise dosing of the solder material is crucial.
Sn63Pb37 – the electronics industry's classic solder alloy
Sn63Pb37 consists of 63% tin and 37% lead and is a eutectic solder alloy with a precise melting point of 183 °C. The alloy transitions directly from solid to liquid without a plastic transition zone, which provides optimal process control during soldering.
Advantages include:
• Rapid and controlled solidification
• Low risk of cold solder joints
• Excellent wetting properties
• High process stability
• Beautiful solder joints
• Proven reliability
Therefore, Sn63Pb37 remains among the most widely used alloys for service, rework, and specialized electronics production.
Flux-cored solder wire with 2.2% REL0 flux
The solder wire contains 2.2% flux and is classified as REL0 according to IPC J-STD-004.
The flux contributes to:
• Effective removal of oxides
• Rapid activation during soldering
• Good flow characteristics
• Uniform solder joints
• Minimal amount of flux residues
• Stable soldering process
This makes the product particularly suitable for manual soldering of electronic components and circuit boards.
Ideal for precision soldering and electronics repair
The fine 0.5 mm wire provides high control over the amount of solder and makes the product suitable for:
• Hand soldering of circuit boards
• Rework of electronics
• SMD components
• Fine pitch components
• Service and maintenance
• Prototypes and development work
• Instrumentation and measuring equipment
• Industrial electronics
The smaller diameter allows for precise dosing and reduces the risk of excess solder on small solder points.
High solder quality and excellent solder joint appearance
Sn63Pb37 is known for providing shiny and uniform solder joints with high mechanical strength.
Advantages include:
• Shiny solder joints
• Excellent wetting
• High reproducibility
• Low risk of soldering defects
• Stable soldering process
• Excellent solder joint appearance
This makes the product popular among electronics manufacturers, development departments, and repair workshops alike.
Advantages of Sn63Pb37 FG
• Classic eutectic Sn63Pb37 alloy
• Flux content 2.2%
• REL0-classified flux
• Excellent wetting properties
• Suitable for precision soldering
• Ideal for SMD and fine pitch components
• Shiny solder joints
• High process stability
• Easy dosing with 0.5 mm wire
• Proven reliability
Technical specifications
Manufacturer: Balver Zinn
Product name: Sn63Pb37 FG
Product type: Flux-cored solder wire
Alloy: Sn63Pb37
Composition: 63% tin / 37% lead
Flux content: 2.2%
Flux classification: REL0
Wire diameter: 0.5 mm
Spool weight: 500 g
Melting point: 183 °C
Application: Hand soldering, rework, and electronics service
Lead-containing: Yes
Production standard: WBZ BaTiLoy
DIN EN ISO 9453: Alloy 102