The Solder Wire Lead Roll 60/40 0.6mm 400g High Quality (0.6mm Fine Gauge / 400g Large Workshop Spool) is an industrial-grade precision electrical soldering alloy designed for high-volume surface-mount (SMD/SMT) assembly, dense PCB production, micro-soldering rework, and delicate electronics repairs. Formulated with a classic 60% Tin (Sn) and 40% Lead (Pb) metallurgical ratio, it features a low melting range (183°C–190°C) with an exceptionally narrow plastic phase, allowing instant melting, rapid capillary action, and fast joint solidification. Containing an integrated, non-corrosive multi-channel rosin flux core (typically 1.8%–2.2%), its ultra-fine 0.6mm diameter prevents accidental solder bridging across closely spaced IC pins while the high-capacity 400g spool offers an extended, cost-effective wire supply for manufacturing floors and professional repair labs.

Specifications

• Alloy Composition: 60% Tin (Sn) / 40% Lead (Pb)
• Wire Diameter: 0.6 mm (±0.03 mm / Fine-Pitch Micro 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: 300°C to 340°C (572°F to 644°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 normal indoor conditions
• Spool Dimensions: Approx. 65 mm Diameter × 60 mm to 65 mm Height
• Spool Hub Hole Diameter: Approx. 20 mm (Fits standard benchtop dispenser spindles)

Features

• Ultra-Fine 0.6mm Diameter: Allows micro-metered solder feeding without flooding small SMD pads, drastically minimizing the risk of solder bridges on fine-pitch IC pins (0.5mm–1.27mm pitch).
• Low Melting Point & Fast Flow: Melts smoothly at ~185°C to facilitate fast wetting and high capillary draw into tight micro-vias and component lead gaps with minimal thermal exposure.
• High-Capacity 400g Production Spool: Provides massive continuous wire length on a single reel, reducing spool changeover downtime in professional production and repair environments.
• Continuous Rosin Flux Core: Built-in flux removes surface oxides instantly upon contact with heated copper, tin, and gold plating, eliminating the need for separate liquid flux on standard joints.
• High Mechanical & Electrical Integrity: Solidifies rapidly into shiny, concave, crack-resistant joints with low electrical contact resistance.

Common Applications

• Surface Mount (SMD / SMT) Soldering & Rework: Hand-soldering QFP, SOIC, SSOP, SOT-23, and passive 0805/0603/0402 package components.
• Microcontroller & Sensor Prototyping: Soldering fine header pins on Arduino Nano, ESP32 modules, Raspberry Pi Pico, and high-density flight controllers.
• Smartphone, Drone & Wearable Repair: Precision track repairs, flex cable soldering, miniature audio jacks, and FPV drone micro-camera pads.
• Fine Wire Terminations: Tinning and terminating thin enamel/magnet wire, ribbon cables, and 26 AWG to 32 AWG jumper wires.
• Precision PCB Track Jumpering: Soldering micro-jumper bodge wires onto broken traces under microscope inspection.

Usage Tips

• Soldering Iron Temperature Setting: Set your precision iron or soldering station to 300°C–330°C. Because 0.6mm wire has very low thermal mass, excessive temperatures (>360°C) will instantly vaporize the flux before it can properly deoxidize the pad.
• Pair with Fine-Tip Geometry: Use conical (0.2mm–0.5mm), fine chisel, or micro-knife tips when feeding 0.6mm wire to ensure direct heat transfer without disturbing neighboring SMD components.
• Feeding Technique: Heat both the pad and the component lead simultaneously with the tip for under a second, then gently touch the 0.6mm solder wire directly to the joint junction to allow capillary action to pull just the right amount of solder into place.
• Flux Residue Cleaning: The rosin residue is electrically non-conductive, but for high-impedance, RF, or visually clean PCB finishes, remove any amber flux spots using Isopropyl Alcohol (IPA ≥ 99%) and a soft ESD brush or cotton swab.
• Safety Guidelines:
  • Always operate in a well-ventilated workstation or use an active carbon/HEPA fume extractor to pull rosin fumes away from your breathing zone.
  • Contains lead; wash hands thoroughly with soap and water after use and never store solder next to food or beverages.