The Solder Wire Lead Roll 60/40 1mm 400g High Quality (1.0mm Standard Gauge / 400g Large Workshop Spool) is an industrial-grade electrical soldering alloy engineered for high-volume through-hole PCB assembly, heavy-gauge wire splicing, connector terminations, and continuous benchtop maintenance. Formulated with a classic 60% Tin (Sn) and 40% Lead (Pb) metallurgical ratio, it features a low melting range (183°C–190°C) with a narrow plastic transition zone, providing rapid liquefaction, excellent capillary spread, and fast joint solidification. Containing an integrated, non-corrosive multi-channel rosin flux core (typically 1.8%–2.2%), its 1.0mm diameter delivers substantial solder volume per stroke for larger pads and ground planes, while the high-capacity 400g spool offers maximum wire supply for production lines, workshops, and repair centers.

Specifications

• Alloy Composition: 60% Tin (Sn) / 40% Lead (Pb)
• Wire Diameter: 1.0 mm (±0.05 mm / Heavy-Duty Standard Gauge)
• Net Solder Weight: 400 g (Gross spool weight approx. 430 g to 450 g)
• Flux Type / Core: Continuous Integrated Rosin Activated (RA) / Mildly Activated (RMA) Core
• Flux Content / Percentage: 1.8% to 2.2% (By weight)
• Melting Temperature Range:
  • Solidus: 183°C (361°F)
  • Liquidus: 190°C (374°F)
• Recommended Iron Tip Temperature: 320°C to 360°C (608°F to 680°F)
• Density: Approx. 8.5 g/cm³
• Electrical Conductivity: Approx. 11.5% to 12% IACS
• Flux Residue Characteristics: Light amber, transparent, non-conductive, non-corrosive under standard operating conditions
• Spool Dimensions: Approx. 65 mm Diameter × 60 mm to 65 mm Height
• Spool Hub Hole Diameter: Approx. 20 mm (Standard benchtop dispenser spindle mounting)

Features

• High-Volume 1.0mm Feed: Delivers ample solder volume per stroke to speed up the soldering of larger through-hole pins, power components, heavy copper pads, and chassis grounds.
• Low Melting Point & Rapid Wetting: Melts consistently at ~185°C to ensure immediate wetting across copper, tin, and brass surfaces without prolonged thermal dwell time.
• Continuous Rosin Flux Core: High-activity internal flux cleans oxidized surfaces instantly on contact, ensuring a smooth spread and preventing dry or cold joints.
• Durable, Crack-Resistant Joints: Solidifies into shiny, concave, mechanically robust fillets that offer strong vibration resistance and low electrical contact resistance.
• High-Capacity 400g Production Spool: Provides double the wire capacity of standard 200g spools, minimizing downtime and reel replacement frequency in busy workshop environments.

Common Applications

• Through-Hole PCB Assembly: Soldering power semiconductors (TO-220, TO-247 packages), large filter capacitors, relays, transformers, and heavy terminal pins.
• Wire Harnessing & Power Leads: Tinning and splicing 14 AWG to 22 AWG stranded copper cables, vehicle wiring harnesses, and battery power leads.
• Heavy-Duty Connectors: Terminating DC power barrel jacks, banana plugs, binding posts, high-current terminal blocks, and chassis-mount switches.
• Power Supplies & Inverter Rework: Servicing linear power supplies, audio power amplifiers, motor speed controllers, and industrial control electronics.
• General Appliance Maintenance: Repairing heating elements, switches, power cords, and motor lead terminations in domestic and commercial equipment.

Usage Tips

• Soldering Iron Temperature Setting: Set your soldering station between 330°C and 350°C. For high-mass ground planes or large lugs, use a medium-to-large chisel or bevel tip to maintain steady heat transfer.
• Proper Feeding Technique: Place the iron tip in contact with both the component lead and the PCB pad for 1–2 seconds to heat them evenly, then feed the 1.0mm wire into the heated joint opposite the tip until a uniform concave fillet is formed.
• Flux Residue Cleaning: The rosin residue is electrically non-conductive and non-hygroscopic; however, for cosmetic cleanliness or high-reliability applications, clean the PCB using Isopropyl Alcohol (IPA ≥ 99%) with an ESD-safe brush or lint-free swab.
• Health & Safety Guidelines:
  • Always work in a well-ventilated environment or use an active benchtop fume extractor to clear airborne rosin fumes.
  • Contains lead; wash hands thoroughly with soap and water after handling, and avoid eating, drinking, or smoking in the workspace.
• Storage Recommendations: Store the spool in a dry, room-temperature location away from high humidity and corrosive chemical vapors to keep the wire surface clean and oxide-free.