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From the composition of the Tin Solder 45% Pb55Sn45 Sn45 alloy to the precision of our flux core technology, every aspect of our product is engineered to enhance your PCB manufacturing process. The combination of Tin Solder with Flux Core in both 1.5mm and 3.0mm diameters, available in 100g, 1/2lb, 1lb, and 1kg spools, gives you the flexibility to standardize or specialize as your production demands.
We understand that PCB manufacturers need more than just a commodity – they need a partner who delivers consistency, technical support, and supply chain reliability. With our rigorous quality controls, transparent certifications, and responsive customer service, we are committed to being that partner. Whether you are a small startup ordering Tin Solder with Flux Core 100g for your first prototype or a multinational OEM sourcing Tin Solder with Flux Core 1kg for your main production line, you can trust our product to perform flawlessly.
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In the demanding world of printed circuit board (PCB) manufacturing, the choice of soldering material directly impacts product reliability, joint integrity, and production efficiency. We are proud to present our premier Tin Solder 45% Pb55Sn45 Sn45 with Flux Core – a meticulously engineered alloy designed to meet the rigorous standards of modern electronics assembly. This Tin Solder Pb55Sn45 formulation offers a perfect balance between melting characteristics, wetting performance, and mechanical strength, making it a top-tier choice for professionals seeking Tin Solder Sn45 for Sale that delivers consistent results.
Our spooled solder wire is available in multiple weight configurations – 100g, 1/2lb, 1lb, and 1kg – alongside two critical diameters: 1.5mm and 3.0mm. Whether you are prototyping in a small lab or running a high-volume production line, our Tin Solder with Flux Core ensures that every joint meets the highest standards of quality and durability. This page explores every aspect of our product, from chemical composition to application techniques, addressing the needs of PCB manufacturers who demand nothing less than excellence.
The Tin Solder 45% Pb55Sn45 Sn45 alloy consists of 45% tin (Sn) and 55% lead (Pb) by weight. This eutectic-leaning composition is renowned in the electronics industry for its reliable performance. The Tin Solder Pb55Sn45 ratio provides a melting range of approximately 183°C to 190°C, offering a wide plastic range that is particularly beneficial for hand soldering and automated wave soldering processes. Compared to higher-tin alloys, this Tin Solder Sn45 for Sale variant demonstrates superior fatigue resistance and reduced copper dissolution, which is crucial when soldering delicate PCB pads and through-hole components.
For PCB manufacturers, the Tin Solder 45% Pb55Sn45 Sn45 offers several distinct advantages:
Excellent Wetting Action: The 45% tin content ensures rapid and uniform wetting on copper, tin-lead, and gold-plated surfaces.
Reduced Intermetallic Growth: Compared to lead-free alternatives, this alloy forms thinner intermetallic layers, reducing brittle fracture risks.
Thermal Cycle Reliability: The higher lead content provides ductility that absorbs mechanical stresses during thermal expansion and contraction.
Cost-Effectiveness: With tin being the more expensive component, the Tin Solder Pb55Sn45 blend offers a favorable cost-performance balance for bulk production.
Our Tin Solder Sn45 for Sale undergoes strict quality control, including spectroscopic analysis to verify the exact 45/55 composition, ensuring batch-to-batch consistency that large-scale PCB facilities require.
Every spool of our Tin Solder with Flux Core contains a precisely formulated rosin-based flux that activates at soldering temperatures. This flux performs three essential functions:
Oxide Removal: It chemically reduces surface oxides on both the solder wire and the base metals, enabling true metallurgical bonding.
Surface Tension Reduction: The flux lowers the surface tension of molten solder, promoting superior wetting and capillary flow into plated through-holes (PTH).
Contamination Barrier: As the flux vaporizes, it creates a protective atmosphere that prevents re-oxidation during the soldering process.
The flux core in our Tin Solder with Flux Core is classified as RA (Rosin Activated) or RMA (Rosin Mildly Activated), depending on your PCB cleanliness requirements. For standard through-hole and SMT rework, our RMA core leaves minimal, non-conductive residues that can be left on the board or easily cleaned with standard solvents. This makes our Tin Solder Sn45 with Flux Core an ideal partner for high-reliability military, automotive, and medical electronics.
Our manufacturing process ensures that the flux content remains uniform at approximately 2.5% to 3.0% by weight across all spool sizes – from the compact Tin Solder with Flux Core 100g to the industrial Tin Solder with Flux Core 1kg spools. This consistency means that whether you order Tin Solder with Flux Core 1/2lb for a trial run or Tin Solder with Flux Core 1lb for daily production, you receive exactly the same flux activity and residue profile. The flux is evenly distributed within the wire, eliminating "dry" sections that can cause cold joints or voids.
The Tin Solder Sn45 1.5mm diameter is our most popular choice for intricate PCB work. This finer gauge allows for:
Accurate Deposition: Ideal for soldering QFPs, PLCCs, and other fine-pitch surface-mount components where solder volume control is critical.
Reduced Heat Input: Thinner wire melts faster with less thermal energy, protecting heat-sensitive ceramic capacitors and plastic connectors.
Solder Bridging Prevention: The Tin Solder Sn45 1.5mm enables precise point-to-point soldering without excessive spread that could bridge adjacent pads.
For prototype assembly, rework stations, and low-volume high-mix production lines, the Tin Solder 45% Pb55Sn45 Sn45 in 1.5mm diameter offers unmatched controllability. It feeds smoothly through standard 0.8mm-1.2mm nozzles on automated soldering robots.
When your production line demands rapid, high-volume soldering of through-hole components, transformers, and thick cables, the Tin Solder Sn45 3.0mm diameter is the go-to choice. Key benefits include:
Faster Feed Rates: The larger cross-section allows automated wave soldering and selective soldering machines to deposit more solder per unit time, increasing throughput.
Thermal Mass Advantage: Thicker wire provides sufficient molten solder to fill large via holes and establish robust fillets on heavy copper planes.
Cost Efficiency: Tin Solder Sn45 3.0mm reduces the number of wire feeding cycles, lowering maintenance and downtime on automatic feeders.
We recommend the Tin Solder Sn45 3.0mm for power supply boards, automotive ECU assemblies, and any PCB with a mix of fine-pitch and large discrete components. Both diameters are available across all spool weights, giving you flexibility to standardize on one diameter or stock both for different workstations.
The Tin Solder with Flux Core 100g spool is the perfect entry point for process engineers and R&D labs. This compact size allows you to:
Test the Tin Solder Pb55Sn45 performance on new PCB designs without committing to large inventory.
Easily switch between different alloys or flux types during development phases.
Manage small-batch production and quick-turn prototypes with minimal waste.
The Tin Solder with Flux Core 100g spool comes in a sealed, moisture-resistant plastic package to preserve flux activity. Its lightweight design makes it ideal for mobile rework stations.
Equivalent to approximately 227 grams, the Tin Solder with Flux Core 1/2lb spool strikes a balance between portability and capacity. It is the go-to size for:
Maintenance and repair shops servicing consumer electronics.
University teaching labs and vocational training centers.
Low-to-medium volume PCB assembly cells.
The Tin Solder with Flux Core 1/2lb spool fits all standard hand-held solder feeders and most benchtop soldering stations. Its moderate weight ensures that the wire unspools smoothly without tangling.
For most small-to-medium PCB manufacturing facilities, the Tin Solder with Flux Core 1lb spool (approx. 454g) represents the optimal economic and operational choice. Advantages include:
Extended runtime between spool changes, minimizing production interruptions.
Better per-gram pricing compared to smaller spools.
Compatibility with both manual and semi-automatic wire feeders.
The Tin Solder with Flux Core 1lb spool is our top-selling SKU, widely adopted by contract manufacturers (CMs) and OEMs producing IoT devices, industrial controls, and consumer electronics. The robust cardboard spool core prevents deformation and ensures consistent wire tension.
When your factory runs 24/7, the Tin Solder with Flux Core 1kg spool delivers the lowest cost per gram and the longest continuous operation. Key features:
Large-diameter spool with heavy-duty flanges to withstand automated feeding systems.
Reduced frequency of spool replacement, cutting downtime by up to 50% compared to 1lb spools.
Optimal for wave soldering machines, selective soldering systems, and robotic soldering cells.
The Tin Solder with Flux Core 1kg spool is engineered with a precision-wound layer to avoid wire crossover and jamming – a common problem with cheaper bulk packaging. We recommend this size for PCB manufacturers with monthly throughput exceeding 10,000 assemblies.
The Tin Solder 45% Pb55Sn45 Sn45 contains 45% tin and 55% lead, whereas lead-free solders (e.g., SAC305) contain no lead but higher tin, silver, and copper. Our Tin Solder Pb55Sn45 offers a lower melting point (183-190°C vs. 217-220°C for SAC305), better wetting on traditional finishes, and superior fatigue resistance. It remains the preferred choice for many aerospace, military, and automotive applications where reliability under thermal cycling is paramount. However, RoHS compliance restricts its use in consumer electronics sold in the EU and other regions – always check your regulatory requirements.
Absolutely. The Tin Solder Sn45 1.5mm diameter works well for through-hole soldering, especially when soldering individual pins or small connectors. However, for larger through-hole components like transformer leads or heavy terminal blocks, we recommend Tin Solder Sn45 3.0mm to ensure adequate solder fill in the barrel. The 1.5mm version is more suitable for mixed-technology boards where fine-pitch SMT and through-hole coexist.
Store your Tin Solder with Flux Core spools in a cool, dry environment between 15°C and 25°C, with relative humidity below 60%. Keep spools sealed in their original plastic bags until use to prevent the activated flux from absorbing ambient moisture, which can cause spattering or reduced activity. For Tin Solder with Flux Core 1kg spools that may take weeks to deplete, consider storing them in a desiccator or using a nitrogen-purged cabinet if your shop has high humidity. Never expose the flux core to extreme heat or direct sunlight.
Yes, our Tin Solder Pb55Sn45 with Flux Core is available with RMA (Rosin Mildly Activated) flux, which leaves a clear, non-conductive residue that is generally acceptable for no-clean processes per IPC-J-STD-001. However, if your PCB has high-density SMT with small pitch (< 0.5mm), we recommend cleaning the residue to prevent any potential leakage current. We offer both standard RA (for maximum activity) and RMA (for no-clean) versions – please specify your requirement at the time of ordering your Tin Solder Sn45 for Sale.
Under proper storage conditions, our Tin Solder 45% Pb55Sn45 Sn45 with Flux Core maintains optimal performance for up to 24 months from the manufacturing date. The flux core gradually loses activity if exposed to air and moisture. We print a clear "manufactured on" date on every spool, from Tin Solder with Flux Core 100g to Tin Solder with Flux Core 1kg. For high-reliability applications, we recommend using the solder within 12 months and performing a wetting test if the spool has been opened for more than six months.
The choice depends on your application:
Tin Solder Sn45 1.5mm – best for fine-pitch SMT, rework, delicate components, and manual soldering where precision is key.
Tin Solder Sn45 3.0mm – best for wave soldering, high-speed automatic feeders, large through-hole components, and applications needing high thermal mass.
Many PCB manufacturers stock both Tin Solder Sn45 1.5mm and Tin Solder Sn45 3.0mm to cover their entire production range. We offer combo deals for bulk orders of both diameters.
No. Our manufacturing process ensures a fixed flux weight percentage (2.5-3.0%) across all spool sizes, including Tin Solder with Flux Core 100g, Tin Solder with Flux Core 1/2lb, Tin Solder with Flux Core 1lb, and Tin Solder with Flux Core 1kg. This consistency means you can scale from prototyping to production without recalibrating your soldering parameters – a critical advantage for process standardization.
Yes, the Tin Solder Pb55Sn45 alloy performs exceptionally well on ENIG finishes. The 45% tin content ensures excellent wetting on the gold layer, while the lead component provides ductility that accommodates the underlying nickel layer's coefficient of thermal expansion. For ENIG boards, we recommend using the RMA flux core version to minimize residue interaction with the gold surface. Our Tin Solder Sn45 for Sale has been successfully validated on thousands of ENIG-based automotive and communication PCBs.
For our Tin Solder with Flux Core 1kg spools, we offer vacuum-sealed foil bags with desiccant packs, placed inside sturdy corrugated cartons. For export orders, we add additional moisture barrier packaging and shock-absorbent materials. We also offer palletized shipping for orders of 100+ spools – contact our sales team for custom logistics solutions.
We pride ourselves on flexibility. There is no minimum order for Tin Solder with Flux Core 100g or Tin Solder with Flux Core 1/2lb – we support R&D and prototyping needs. For Tin Solder with Flux Core 1lb and Tin Solder with Flux Core 1kg, the MOQ is just 10 spools per diameter, with discounted tiered pricing for volumes above 50, 200, and 500 spools. We also offer sample kits containing both 1.5mm and 3.0mm diameters in Tin Solder with Flux Core 100g sizes – an excellent way to evaluate our product in your specific process.
Every batch of Tin Solder 45% Pb55Sn45 Sn45 undergoes rigorous quality checks:
Composition Analysis: Using X-ray fluorescence (XRF) and ICP-OES to verify 45/55 ratio with ±0.5% tolerance.
Flux Activity Test: Wettability balance testing per IPC-TM-650.
Spool Integrity: Layer winding inspection to ensure zero tangles or overlaps.
Diameter Tolerance: Both Tin Solder Sn45 1.5mm and Tin Solder Sn45 3.0mm are held to ±0.05mm tolerance, exceeding IPC J-STD-006 requirements.
We provide a Certificate of Conformance (CoC) with every shipment, detailing chemical analysis, flux content, and diameter measurements. Our Tin Solder with Flux Core products are compliant with REACH, RoHS (for our lead-free variants), and conflict mineral regulations. For Tin Solder Pb55Sn45, we provide a full Material Declaration Data Sheet (MDDS) to support your IMDS or CDS submissions.
We have partnered with leading PCB manufacturers to validate our Tin Solder Sn45 for Sale under real-world conditions. Testing includes:
Thermal cycling from -55°C to +125°C for 1000 cycles.
Shear strength testing on 0603 and 0805 components.
Void analysis via X-ray inspection on BGA and QFN packages.
Insulation resistance testing after 85°C/85% RH aging.
Results consistently show that our Tin Solder with Flux Core delivers shear strengths exceeding 25 MPa and void rates below 5% – outperforming generic imports by a significant margin.
The primary use case for Tin Solder 45% Pb55Sn45 Sn45 is in the assembly of rigid and flexible PCBs. Whether you are operating a selective soldering system, a wave soldering machine, or manual soldering stations, our Tin Solder Sn45 1.5mm and 3.0mm diameters provide the versatility to handle every joint type. High-reliability sectors – such as avionics, defense, and pacemaker manufacturing – frequently specify Tin Solder Pb55Sn45 for its proven track record in mission-critical electronics.
For rework operations, the Tin Solder with Flux Core 100g spools in 1.5mm diameter are indispensable. The active flux quickly removes oxidation from old joints, allowing for clean desoldering and resoldering of components. The relatively low melting point of Tin Solder 45% Pb55Sn45 Sn45 minimizes the risk of pad lifting and laminate delamination – common issues with higher-temperature solders.
The automotive industry values Tin Solder Pb55Sn45 for its vibration resistance and thermal cycling stability. Engine control units (ECUs), sensor modules, and power distribution boards benefit from the ductility of the 55% lead content, which absorbs mechanical shocks from engine vibration. Our Tin Solder Sn45 3.0mm is widely used in these applications for its rapid heat transfer during wave soldering of heavy copper traces.
Ordering your Tin Solder Sn45 for Sale is straightforward. You can choose any combination of:
Weight: 100g, 1/2lb, 1lb, or 1kg
Diameter: 1.5mm or 3.0mm
Flux Type: Standard RA or RMA (no-clean)
For example, you can order Tin Solder with Flux Core 1kg in Tin Solder Sn45 1.5mm with RMA flux, or Tin Solder with Flux Core 1/2lb in Tin Solder Sn45 3.0mm with RA flux – we accommodate all permutations. Bulk discounts apply for quantities exceeding 50 spools, with significant savings for mixing and matching diameters and spool sizes.
We ship worldwide with tracking and insurance. Typical lead times for in-stock items are 2-3 business days for domestic orders and 5-7 business days for international destinations. Expedited shipping options (FedEx Priority, DHL Express) are available for urgent Tin Solder with Flux Core requirements. For large-volume contracts (e.g., 500+ kg per month), we offer consignment stocking and just-in-time (JIT) delivery programs to reduce your inventory overhead.
From the composition of the Tin Solder 45% Pb55Sn45 Sn45 alloy to the precision of our flux core technology, every aspect of our product is engineered to enhance your PCB manufacturing process. The combination of Tin Solder with Flux Core in both 1.5mm and 3.0mm diameters, available in 100g, 1/2lb, 1lb, and 1kg spools, gives you the flexibility to standardize or specialize as your production demands.
We understand that PCB manufacturers need more than just a commodity – they need a partner who delivers consistency, technical support, and supply chain reliability. With our rigorous quality controls, transparent certifications, and responsive customer service, we are committed to being that partner. Whether you are a small startup ordering Tin Solder with Flux Core 100g for your first prototype or a multinational OEM sourcing Tin Solder with Flux Core 1kg for your main production line, you can trust our product to perform flawlessly.
Order your Tin Solder Sn45 for Sale today and experience the difference that premium materials and dedicated support can make. Contact our sales team for a custom quote, technical datasheets, or free evaluation samples of Tin Solder Pb55Sn45 in your preferred diameter and spool size.
Contact us:
Email: xfsolder@163.com or xfsolder@gmail.com
WhatsApp/Wechat: +8613450770997
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