The 4901 Sn99 No Clean Solder Wire is an electronic grade solder wire. It uses a high-purity, eutectic Sn99.3/Cu0.7 alloy, which is complemented with a no clean, synthetically refined, splatter-proof resin flux core. The 4901 solder meets J-STD-004B, ASTM B 32, and exceeds J-STD-006C specifications.

This solder is a great lead-free alternative to leaded solders. It is suitable, less costly replacement for SAC305.

The 4901 solders achieve a consistent solder and flux percentage through a state-of-the-art, extrusion, wire-drawing machine. This machine continually monitors the wire to prevent voids and ensure consistency, providing a top-grade solder wire.


  • Eutectic alloy (liquidus = solidus temperature)
  • Alloy exceeds J-STD-006C and meets ASTM B 32 purity requirements
  • Flux meets J-STD-004B
  • The resin spreads like rosin-activated flux
  • Virtually non-splattering
  • Non-corrosive
  • Non-conductive
  • Halide free
  • Suitable for Use in Food Facilities as a Non-Food Chemical—Canadian and NFS recognition letters available on request
Catalog Number Size Diameter Gauge Flux Core % Description
4901-112G 113 g (0.25lb) 0.81 mm (0.032 in) 21 2.2 Pack of 25
4901-227G 227 g (0.5 lb) 0.81 mm (0.032 in) 21 2.2 Pack of 3
4901-454G 454 g (1.0 lb) 0.81 mm (0.032 in) 21 2.2 Spool
4901-2LB 908 g (2.0 lb) 0.81 mm (0.032 in)" 21 2.2 Bar

* Also available in flux core percentages: 2% to 4%


Safety Data Sheet
Technical Data Sheet

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