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Brand: JJY TinSolder
Model: Sn55Pb45 Leaded Solder Bar
Alloy Composition: Sn55Pb45
Melting Point: 183/203℃
Working Temperature: 255~275℃
Specification: 25kg/box
| Name | Parameters |
|---|---|
| Model | Leaded solder bar Sn55Pb45 |
| Applications | General leaded solder-pot dip-soldering processes such as soldering copper parts and tin-plated copper parts |
| Alloy Composition | Sn55Pb45 |
| Melting Point | 183/203℃ |
| Working Temperature | 255~275℃ |
| Solderable | Copper parts, tin-plated copper parts, etc. |
| Custom Processing | Yes |
| Specification | 25kg/carton |
JIAJINYUAN leaded solder bar is cast from virgin refined tin fused with electrolytic lead using a special manufacturing method and a high-standard production process, under the inspection of precision instruments and quality control by dedicated engineers. The Sn55Pb45 alloy system has a wide liquidus-solidus range around a melting point of 183°C and a working temperature of 255~275°C, suitable for general leaded solder-pot dip-soldering processes on copper and tin-plated copper parts.
The product has strong oxidation resistance and excellent physical and chemical properties, causes no environmental pollution, and meets national standards as well as JIS and IPC standards.
Solder bar melts evenly with good fluidity, with solder climbing height up to 100% and bright, full joints. It effectively solves industry challenges such as cold joints, solder bridging, solder balls, tombstoning, and voids.
Certified to multiple environmental SGS standards including RoHS, halogen, and REACH (SVHC). Post-solder residue is transparent and colorless, ROL0 no-clean, with high insulation resistance for safe, reliable performance.
Advanced production and testing equipment from Germany and Japan, strict ISO9001/ISO14001 quality control, and 21 inspection steps per batch ensure consistent, stable performance over the long term.
Our experienced engineers provide one-on-one service, free on-site debugging, and better-matched solder bar products, solving soldering process issues on the spot.
A full range of solder bar products to meet diverse process needs
Sn96.5Ag3Cu0.5, the strongest overall performance — creep-resistant, resistant to thermal shock, and producing bright joints. The most widely used eco-friendly solder bar today
Withstands the high temperatures of subsequent processes and equipment heat radiation; joints resist re-melting and detachment. Oxidation- and creep-resistant at high temperatures, with no deformation or cracking under long-term high-temperature conditions
Sn63Pb37 eutectic alloy with the lowest melting point, excellent fluidity, bright joints, and cost efficiency — ideal for general consumer electronics
Leaded solder bar for wave soldering, leaded solder bar for dip furnaces, anti-oxidation leaded solder bar, high-purity leaded solder bar, Sn/Pb series leaded solder bar, high-temperature leaded solder bar, medium-temperature leaded solder bar, low-temperature leaded solder bar, and custom leaded solder bar.
At soldering temperatures below 300°C, the molten solder surface stays bright as a mirror, with a short wetting time and a spreading rate higher than ordinary solder. The added antioxidants produce bright, full, and attractive joints, suitable for PCB wave soldering and dip soldering.
At high temperatures of (380-520)°C, the solder surface maintains a silvery mirror finish for a long time, and dross output is only about 1/7 that of ordinary leaded solder bar. Suitable for dip soldering processes, especially for tinning self-fluxing enameled wire in transformer manufacturing. The low-dross effect not only reduces defective joints and saves costs, but also reduces the need for solder pot maintenance.
Per bar: Non-standard approx. (0.6-0.8) kg/bar
Packing: 25kg/box
Compatible furnace: Non-standard length approx. 330mm
Per bar: Standard 1kg/bar, 2kg/bar, 500g/bar (customizable)
Packing: 10kg/box, 20kg/box, 25kg/box (customizable to customer requirements)
Compatible furnace: Length customizable to wave soldering pot dimensions (e.g., 250mm/300mm/350mm, etc.)
Wave soldering lead-free solder bar, dip furnace lead-free solder bar, anti-oxidation lead-free solder bar, high-purity lead-free solder bar, SAC series silver-bearing lead-free solder bar, high-temperature lead-free solder bar, medium-temperature lead-free solder bar, low-temperature lead-free solder bar, eco-friendly halogen-free lead-free solder bar, lead-free nickel-bearing solder bar, lead-free bismuth-bearing solder bar, and custom lead-free solder bar.
At soldering temperatures below 300°C, the molten solder surface stays bright as a mirror, with a short wetting time and a spreading rate higher than ordinary solder. The added antioxidants produce bright, full, and attractive joints, suitable for PCB wave soldering and dip soldering.
At a high temperature of 450°C, the solder surface maintains a silvery mirror finish for a long time, and dross output is only about 1/7 that of ordinary lead-free solder bar. Suitable for dip soldering processes, especially for tinning self-fluxing enameled wire in transformer manufacturing. The low-dross effect not only reduces defective joints and saves costs, but also reduces the need for solder pot maintenance.
Per bar: Non-standard approx. (0.6-1.1) kg/bar or standard 1kg/bar, 2kg/bar, 500g/bar (customizable)
Packing: 10kg/box, 20kg/box (standard), 25kg/box (customizable)
Compatible furnace: Non-standard length approx. 326mm, or length customizable to wave soldering pot dimensions (e.g., 250mm/300mm/350mm, etc.)
Targeted solutions for every soldering process challenge
Have other soldering issues? Consult our technical engineers now
Free Technical Consultation18 years of craftsmanship — every detail is a promise of quality
The quality of lead-free solder bar for the electronics industry depends on the purity and origin of the raw materials and the manufacturer's production process. The material composition of tin ingot raw materials varies by origin, so we strictly select raw material suppliers to obtain high-purity, high-quality virgin tin, electrolytic copper, pure silver, and other materials — ensuring stable solder bar quality from the source. We also strictly comply with national standard GB/T20422-2018 and the requirements of JIS-Z-3282 and J-STD-006. Combined with a special production process, the result is low viscosity after melting, good wettability, high fluidity, and excellent solderability, making tinning easy and effectively improving soldering efficiency.
A proprietary STIR process removes impurities, especially oxides naturally formed in metal raw materials, while adding two or more trace elements greatly improves the solder's anti-oxidation performance, reduces dross formation, and improves joint appearance — ensuring a very low oxidation dross rate during soldering and reducing unnecessary waste.
Refined through a special process with very fine metallographic grains, the solder produces strong, bright, full joints with no cold joints, voids, peaks, or bridging, and no residual impurities after soldering. It delivers excellent tensile strength, shear strength, thermal fatigue resistance, creep resistance, and durability, making the joint mechanically similar to the substrate for a strong bond and effectively inhibiting intermetallic compound (IMC) growth.
A unique high anti-oxidation formula combined with free on-site technical service from our engineers — such as properly setting temperature, wave height, conveyor speed, dross removal and solder bar addition timing, checking and correcting composition, and matching flux — effectively keeps solder composition stable and finds the balance between efficiency and stability, controlling the dross rate within 7-20%. Free on-site solder pot cleaning, with dross purchased at a high price or exchanged for brand-new solder bars.
Follow the guidelines to get the best performance
Store in a dry place at room temperature; shelf life 12 months
Inspect the surface; use only if free of severe oxidation, cracks, or deformation.
Compatible with solder melting pots / wave soldering; control pot temperature per equipment requirements and add solder bar as needed to maintain the level.
Use up as soon as possible after opening, and keep moisture- and dust-proof throughout.
Multiple authoritative certifications, quality you can trust
Quality Management System
ROHS Compliant
EU Environmental Certification
18-Year Factory Brand
Years in Industry
Customers
Inspection Steps
Quality Certifications
Our professional technical team provides custom formulas based on your process requirements. Solder alloys, flux activity levels, cleaning methods and special performance characteristics can all be customized. We also offer product selection advice, optimize soldering processes and provide suitable solutions to improve your first-pass yield.
A 5000㎡ factory equipped with 96 production and testing machines. ISO9001/ISO14001 certified and strictly implemented. 21 inspection steps ensure stable solder performance. Incoming material, in-process and finished product testing ensure compliance. All eco-friendly products are SGS tested and meet RoHS, halogen-free and REACH (SVHC) standards.
18 years focused on solder paste R&D and production. Using high-purity virgin tin, optimized flux formulas and a special process that adds trace-element alloys. Our solder paste precisely matches assembly scenarios, delivering fast climbing and bright, full solder joints. No cold joints, bridging, solder balls, tombstones, voids, stringing, slump or drying issues. Factory-direct sales with no middlemen for better value.
Senior engineers provide pre-sales consulting and after-sales technical support with one-on-one service. Free on-site debugging and product matching. On-site problem solving. Solutions provided within 24 hours and issues resolved within 72 hours. Free replacement for quality issues.
High-end equipment from Germany and Japan ensures product precision and quality
Vacuum Mixing (Tank and Syringe) Batch Filling Integrated Machine (1)
German SPECTRO Spectroscopy Analyzer
Japanese Malcom solder paste viscosity meter
Solder paste dispensing and spraying + Laser welding testing machine
Vacuum Mixing (Tank and Syringe) Batch Filling Integrated Machine (2)
Solder paste printing testing machine
Programmable Desktop Reflow Soldering Machine Tester
Kecheng Test Constant Temperature and Humidity Chamber
Vacuum mixing (tank and syringe) filling and sealing integrated machine (3)
Paste emulsifying machine
Paste grinding machine
Fully automatic solder paste mixer
Middle part of the tin cylinder
Solder Extruder
Wire Stretcher
Winding Machine
Serving many well-known enterprises, trusted by customers
Free samples + on-site debugging by technical engineers
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