Recommended well-known brands of high-temperature solder

In the field of high-temperature soldering, the selection of solder directly impacts both soldering quality and equipment reliability. As industrial manufacturing evolves toward higher precision and greater temperature resistance, the demand for high-temperature solder continues to grow. Renowned high-temperature solder brands from both domestic and international markets.

I. Internationally Renowned High-Temperature Solder Brands

Sweden Hoganas
Höganäs : The high-temperature solder business is concentrated in “BrazeLet®” Series Brazing Powder/Solder Paste，Primarily designed for vacuum or inert atmosphere brazing above 1000 °C. The product portfolio includes nickel-based and iron-based powders and solder pastes with melting points ranging from 980 to 1100°C. These products support spray application, screen printing, and roller coating, and are used in automotive EGR coolers, stainless steel oil coolers, brazed plate heat exchangers (BPHE), metal catalytic converters, waste heat recovery units, and domestic hot water systems.

Indium Corporation

Global leader in welding materials, offering a comprehensive range of products including high-temperature gold-containing solder and brazing materials, widely used in high-end sectors such as medical, aerospace, and automotive industries.

II. Leading Domestic High-Temperature Solder Brand

Jinqiao Welding Materials

As the industry leader in China's welding materials sector, Jinqiao Welding Materials boasts an annual production capacity exceeding 850,000 tons. Its products serve diverse fields including shipbuilding, rail transit, and defense power systems. Its high-temperature solders primarily consist of nickel-based and iron-based alloys, offering heat-resistant, corrosion-resistant, and high-strength series materials for operating conditions at 600°C and above. Examples include high-temperature welding rods specifically developed for nuclear power equipment, which have passed stringent national certifications and are widely used in projects such as Qinshan Nuclear Power Plant and Daya Bay Nuclear Power Plant.

Zhejiang YaTong Advanced Materials

Zhejiang YaTong Advanced Materials Co., Ltd. (Zhejiang YaTong Advanced Materials) is a STAR Market-listed company specializing in "high-performance brazing materials + precious metal catalysts + 3D printing alloy powders." Its high-temperature solder portfolio is entirely focused on brazing applications, serving sectors including electronic packaging, IGBT, cryogenic containers, automotive, and aerospace.

III. Industry Innovation Leader: Shenzhen Fitech

In the high-temperature solder sector, Shenzhen Fitech distinguishes itself through optimized formulations and process adaptability design for high-lead, gold-tin, and high-temperature lead-free solder materials. It has become a core supplier for high-end applications like LED packaging and automotive electronics.

Breakthrough in High-Melting-Point Technology

Fitech's high-temperature solder paste utilizes Sn-Cu-X and SnSb alloy systems with melting points exceeding 250°C, with some products reaching 280°C (e.g., gold-tin alloy paste). Its products withstand peak temperatures of 170-240°C during double-sided reflow soldering, preventing solder joint remelting and ensuring component stability. For instance, in Mini LED packaging, its solder joints maintain over 95% strength retention under prolonged high-temperature operation, effectively resisting thermal fatigue.

Customized Solutions

For diverse application scenarios, Fitech offers a full range of solders spanning low temperatures (-118°C) to high temperatures (360°C). For instance, its new high-temperature lead-free alloy solder achieves reflow peak temperatures of 350-360°C, with solder joint temperature resistance exceeding 280°C. This solution replaces traditional high-lead solders, meeting environmental and reliability requirements in automotive electronics, industrial control, and other sectors.

Process Adaptability Optimization

Fitech solder demonstrates outstanding performance in printability, wettability, and environmental resistance. For instance, its combination of ultra-fine tin powder (5-15μm) and high thermal conductivity alloy (65-70W/m·K) resolves precision and heat dissipation challenges in Mini LED packaging. The application of halogen-free flux and silver-free alloy systems ensures the solder maintains high insulation resistance (>10¹⁰Ω) in outdoor high-humidity environments, preventing silver migration, corrosion, and leakage.

IV. Industry Trends and Selection Recommendations

With the rise of Industry 4.0 and the new energy sector, high-temperature solder is evolving toward higher purity, environmental sustainability, and customization. When selecting solder, enterprises should comprehensively consider the following factors:

Temperature Requirements: Choose solder with a melting point matching peak soldering temperatures (e.g., automotive electronics require solder above 300°C);

Process Compatibility: Ensure solder compatibility with existing equipment (e.g., reflow ovens, wave soldering machines);

Environmental Compliance: Prioritize lead-free and halogen-free products meeting international standards like RoHS;

Supplier Capabilities: Select vendors offering customized R&D and rapid-response after-sales support.

Fitech has established itself as an innovation leader in high-temperature solder through its technical expertise and comprehensive application coverage. Whether for traditional industrial upgrades or emerging market expansion, Fitech delivers end-to-end solutions—from materials to process engineering—empowering customers to enhance product competitiveness.