SOPAGRE MN-016 Welding Temperature Lead Syringe Clean 7445006460473 SN42/BI58 PASTE138

( Brand: Sopagre ), ( Manufacturer Part Number: MN-016 ), ( Model: MN-016 30G ), ( Part Type: Syringe ), ( Batteries Required : No ), ( Power Source: Hand Powered ), ( Item Weight: 1.76 Ounces ), ( Included Components: 1 Set Solder Paste ), ( Package Dimensions: 6.85 X 4.02 X 1.38 Inches ), ( UPC: 445006460473 )

Review SOPAGRE Sn42/bi58 Smd Welding Low Temperature Lead free Syringe No Clean Sold

The **Sopagre MN-016 SN42/BI58 Welding Paste** is a high-performance, lead-free flux designed specifically for precision soldering applications, particularly in electronics assembly, PCB repair, and delicate component rework. Formulated with a sophisticated blend of advanced fluxing agents, this paste delivers exceptional wetting properties and flux activity, ensuring clean, void-free solder joints with minimal oxidation or contamination. The **SN42/BI58** designation indicates its optimized viscosity and flux characteristics, making it ideal for fine-pitch soldering, BGA (Ball Grid Array) reballing, and high-reliability applications where thermal and mechanical stress must be carefully managed. Engineered to operate within a **138 C temperature range**, this paste provides a balanced fluxing window that prevents premature activation while ensuring complete fluxing action at the soldering temperature, reducing the risk of bridging, cold solder joints, or flux residue issues. Its **lead-free formulation** adheres to stringent environmental and safety regulations, such as RoHS compliance, making it suitable for medical, aerospace, and automotive industries where toxic residue is a concern. The paste is packaged in a **syringe applicator**, allowing for precise, controlled dispensing with minimal waste, which is crucial for high-density circuit boards and micro-soldering tasks. Whether used in automated pick-and-place systems or manual rework stations, this welding paste enhances solderability, improves joint integrity, and minimizes post-processing cleaning requirements, making it a versatile choice for both production and prototyping environments.

**Pros and Cons of buying a Sopagre MN-016 (SN42/BI58) Welding Paste for Lead-Free Soldering**

### **Pros**

1. **Lead-Free Compliance** The paste adheres to lead-free soldering standards (SN42/BI58), making it suitable for applications requiring compliance with environmental regulations such as RoHS (Restriction of Hazardous Substances). This is particularly important in electronics manufacturing, medical devices, and industries where toxic material restrictions are enforced.

2. **High Reliability in Syringe Cleaning** Designed for precision applications, including syringe cleaning, this paste ensures consistent fluxing and soldering performance, reducing defects in delicate components.

3. **Temperature Stability (138 C)** The specified temperature range (138 C) suggests it is optimized for low-temperature soldering, which is gentler on sensitive materials like plastics, PCBs, and medical-grade components. This minimizes thermal stress and potential damage.

4. **Low Residue** Lead-free fluxes often produce less corrosive residue compared to traditional tin-lead pastes, reducing the risk of short circuits or reliability issues in finished assemblies.

5. **Compatibility with Modern Soldering Techniques** Suitable for wave soldering, reflow soldering, and manual soldering processes, making it versatile for various production methods.

6. **Reduced Environmental Impact** By avoiding lead, the paste aligns with sustainability goals and reduces exposure risks for workers and end-users.

7. **Potential Long-Term Cost Savings** While the initial cost may be higher than lead-based alternatives, the long-term benefits of compliance, reliability, and reduced waste can offset expenses.

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### **Cons**

1. **Higher Cost** Lead-free soldering materials are generally more expensive than traditional tin-lead pastes. The additional cost may impact budget-sensitive projects or small-scale operations.

2. **Potential Performance Trade-offs** Some users report that lead-free solder can have slightly lower mechanical strength or electrical conductivity compared to lead-based solder, though modern formulations (like SN42/BI58) mitigate these issues.

3. **Limited Availability or Supplier Dependence** High-quality lead-free pastes may not be as widely stocked as conventional options, requiring sourcing from specialized suppliers. This could lead to longer lead times or dependency on specific vendors.

4. **Sensitivity to Storage Conditions** Like most fluxes, this paste may require careful storage (e.g., sealed, dry conditions) to prevent degradation, which could add operational complexity.

5. **Learning Curve for Workers** If a team is accustomed to lead-based soldering, transitioning to lead-free processes may require training to ensure proper application techniques, reducing initial productivity.

6. **Compatibility Issues with Certain Materials** While designed for low-temperature applications, some substrates (e.g., certain metals or coatings) may not bond as effectively with lead-free solder, requiring pre-treatment or additional flux.

7. **Potential for Oxide Formation** Lead-free solder is more prone to oxidation during the soldering process, which may necessitate additional flux activation or a controlled atmosphere (e.g., nitrogen) for optimal results.

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### **Conclusion**

The **Sopagre MN-016 (SN42/BI58) lead-free welding paste** is a strong choice for applications requiring **compliance with environmental regulations, precision soldering (e.g., syringe cleaning), and low-temperature processing**. Its advantages in **sustainability, reliability, and reduced residue** make it ideal for industries prioritizing long-term performance and regulatory adherence. However, the **higher cost, potential performance nuances, and operational adjustments** may pose challenges for cost-sensitive or inexperienced users.

For **medical device manufacturing, electronics assembly, or any lead-free soldering requirement**, this paste is highly recommended. If budget constraints or material compatibility are concerns, thorough testing or consultation with a supplier may be advisable to ensure it meets specific project needs.

Purchase the Sopagre MN-016 if your project demands **lead-free compliance, precision, and low-temperature soldering**. For applications where cost or material compatibility is critical, evaluate alternatives or conduct small-scale trials first. Always verify supplier reliability and storage requirements to maximize performance.

Details:

Paste Features: Lead-Free Solder - Low Temperature With Flux, Melting Point: 138 280.4F ,Suitable For Paper Boards Or Soft That Cannot Withstand High Temperatures, Special Welding Of Small Components.: Paste Features: Lead-Free, No Clean, Strong Viscosity, Bright Welding Point. Product Advantages: Pushing-Type Design Smoother Flowing No Wasting During Welding. Lead-Free Solder Paste Content: Alloy Tin 42% Bi 58%, Flux 10.5%.

Applications: Widely Used In Circuit Board, IC, BGA /SMD Board,Motors, Lighting,TV and Other Household Appliances And Industrial Equipment,Sensors, Wires, Fuses, Phone,Metal Shells, Motors, Lighting, Connectors,SMT Maintenance.

specifications weldtoolsam:

• brand: Sopagre
• mpn: Mn-016
• model: Mn-016 30g
• part type: Syringe
• batteries required : No
• power source: Hand Powered
• item weight: 1.76 Ounces
• included components: 1 Set Solder Paste
• package dimensions: 6.85 X 4.02 X 1.38 Inches
• upc: 445006460473

returns weldtoolsam:

• policy: Returns Accepted
• time: 30 Days
• method: Money back
• paid by: Seller

offer weldtoolsam:

• sold: 0
• started: May 30, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home

general weldtoolsam:

• Tools Workshop Equipment > Power Tools > Welding Soldering Tools
• condition: New

seller weldtoolsam:

• rating: 100.0%
• # reviews: 707
• city: Cherry Hill, New Jersey

shipping weldtoolsam:

• service: Standard
• transit: 4-7 Days
• cost: $0.00
• type: Fixed
• class: Standard

payments weldtoolsam:

• other
• wallet: Paypal
• credit card: Visa

Sopagre MN-016 Is Similar To:

• Sopagre Mn-008 Sn99 ag0.3 cu0.7 Smd Welding Paste217 C High Temperature Lead-free No Clean Sold (77.9% similar) Paste features: lead-free solder - low temperature with flux, melting point: 218 c.: lead-free solder paste content: alloy tin 99% ag 0.3 CU0.7%, flux 10.5%. Paste features: lead-free, no clean, strong viscosity, bright welding point. Package includes: a bottle of solder paste. Applications: widely ...(May 30th, 2026)