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IS 13730/IEC 60317 PART-20 & 23
Streamline your production line and eliminate tedious manufacturing steps with SEPL Self-Solderable Copper Winding Wires. Engineered specifically for high-speed automated winding and intricate electronics, these wires feature a specialized heat-reactive insulation that strips itself instantly upon contact with molten solder. By removing the need for manual scraping or chemical stripping, SEPL allows manufacturers to achieve ultra-clean, lightning-fast joint terminations without compromising on electrical integrity.
Specifications
Material – Oxygen-Free High-Conductivity Copper
Conductor Type – Fine Round Wire
Colour – Natural Amber
Insulation Material – Modified Polyurethane Resin Base
Insulation Type – Grade 1 & Grade 2 Solderable Film
Usage/Application – Micro-Relays, Solenoid Valves, Small Transformers, Audio Voice Coils, SMD Inductors, Flyback Transformers
STD Wire Gauge – 25.0 – 45.0 (Specialized Fine & Ultra-Fine Ranges)
Quality Maintain Every Time
Precision is critical when working with fine-gauge electronics, which is why our quality control centres around perfect coat-uniformity and solderability testing. Every production lot is subjected to automated laser-diameter checks to ensure zero variance in wire thickness. More importantly, we conduct timed solder-bath immersion tests to verify that the insulation consistently dissolves in under two seconds at standard soldering temperatures, guaranteeing a flawless, residue-free metallurgical bond every single time.
Direct Solder Efficiency Without Stripping
Revolutionize your assembly workflow by bonding connections directly through the enamel layer. When exposed to a soldering iron or pot heated between 360°C and 400°C, the polyurethane insulation instantly vaporizes at the joint site, acting as its own flux to expose clean copper beneath. This completely removes the risk of nicking or snapping delicate micro-wires during mechanical stripping, drastically reducing scrap rates and boosting your daily factory throughput.
High-Frequency Signal Integrity
Perfect for modern electronic applications, our ultra-pure copper core provides minimal electrical resistance and excellent signal fidelity. The lightweight, uniform polyurethane coating minimizes parasitic capacitance and maintains tight impedance control, making these wires highly efficient for high-frequency coils, communication equipment, and sensitive RF components where power loss must be kept to an absolute minimum.
Superb Windability for Micro-Coils
Designed to navigate the demanding paths of high-speed automatic winding flyers, this wire boasts excellent slip characteristics and high dimensional stability. The smooth, friction-resistant outer skin allows for tight, dense, and compact coil layering without tangles or bird-nesting. Its exceptional elongation properties mean the wire can stretch and contour easily around sharp bobbin corners, preventing micro-fractures in the core.
