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Sn63Pb37 Flux-cored Tin Lead Solder Wire

Sn96.5Ag3.0Cu0.5 flux-cored lead-free solder wire commonly referred to as SAC305 is one of the most widely used solder alloys in modern electronic manufacturing. Known for its excellent mechanical strength, thermal stability, and superior soldering performance, this alloy has become the industry standard for lead-free SMT, through-hole soldering, and general electronic assembly. Containing 96.5% tin, 3.0% silver, and 0.5% copper, the alloy provides an optimized balance of melting temperature, wetting behavior, and joint reliability suitable for high-performance applications.

    Product Overview

    This solder wire features a carefully designed, high-quality flux core that plays a crucial role in ensuring optimal soldering performance. This advanced flux formulation helps to quickly remove oxides, essential for achieving strong solder joints. It promotes smooth solder flow and provides stable wetting on various PCB surfaces and component leads, ensuring effective solder adhesion. The formulation is specially designed to minimize spatter, thus avoiding a messy working environment and solder joint defects. Furthermore, it reduces the risk of solder bridging (intentionally connecting two or more pins with solder), thereby promoting solder joint formation. This makes this solder wire particularly suitable for manual and automated soldering systems, as well as for fine-pitch electronic components requiring high-precision soldering.
    A major advantage of this solder wire is its minimal residue after soldering. This characteristic facilitates cleaner production processes and significantly reduces the need for post-soldering cleaning, thus saving time and costs. By minimizing residue, manufacturers can improve the overall efficiency of their production lines and ensure that finished products meet higher quality standards.
    SAC305 solder wire has a melting point range of 217–219°C, making it particularly suitable for lead-free soldering processes requiring high-temperature performance. This melting point range is ideal for applications requiring precise thermal management, ensuring smooth solder flow and effective solidification without compromising component integrity. The wire's high tensile strength and excellent resistance to thermal fatigue are especially beneficial for applications subjected to vibration, thermal cycling, or long-term mechanical stress. Therefore, SAC305 solder wire is an ideal choice for critical industries with extremely high reliability and durability requirements, such as automotive electronics, industrial control units, medical devices, and consumer electronics.
    Sn96.5Ag3.0Cu0.5 solder wire is available in a variety of diameters and flux contents to suit a wide range of soldering processes and production environments. This versatility allows manufacturers to select the appropriate solder wire for specific applications, ensuring optimal performance across different processes. With stable alloy purity and precise flux distribution, this solder wire delivers reliable, durable, and highly intact solder joints, meeting the stringent requirements of modern electronics manufacturing.
    Beyond its technological advantages, this solder wire offers a reliable solution for companies seeking high-quality, environmentally friendly, and high-performance lead-free solder. As industries increasingly prioritize sustainability and regulatory compliance, using such advanced solders is crucial for maintaining a competitive edge while adhering to environmental standards, providing manufacturers with the tools they need to efficiently produce high-quality electronic components.

    detail pictures

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