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Domestic Solder Knowledge

Here you can find knowledge about Domestic Solder, including but not limited to usage methods, installation techniques, troubleshooting and more. Focused on SMT soldering processes. If you can't find what you need, please contact us anytime.

Solder Paste Ages Fast: How to Choose the Right Domestic Solder Paste

The rapid aging speed of solder paste directly affects SMT printing yield and reflow soldering consistency. Domestic anti-aging solder paste must balance halogen content, alloy powder particle size distribution, and rosin matrix stability. For example, the 8MNTTP/5RNTT series contains 100~200ppm ultra-low halogen, is compatible with T3-T5 grade 00507BN alloy powder, and has been tested on mobile phone and fingerprint lock production lines, with a viscosity change of <8% after 72 hours, significantly outperforming conventional domestic SMT solder paste.

Published: 2009-01-25

Frequent Stencil Clogging: Domestic Solder Paste Solves Printing Challenges

Frequent solder paste clogging in stencils directly affects the efficiency and yield of SMT production lines. By optimizing the particle size distribution of alloy powder, the rheological properties of the rosin carrier, and the control of halogen residues, domestic anti-clogging solder paste achieves stable release and high solder wetting rates in fine-pitch printing applications such as QFN/DFN. A typical example is the 8MQP/5RQ series T4 powder paired with 0307 alloy, which balances printability and reflow performance, making it a cost-effective alternative to imported printing solder paste.

Published: 2009-01-23

Clear Printing and Forming Contours, Recommendations for Domestic Solder Paste Brands

Domestic solder paste with clear printing and forming profiles must balance thixotropy, powder distribution, and reflow wettability. The Jiajinyuan 8MQP/5RQ series achieves high-resolution printing while delivering near-100% solder fillet climb rate on QFN packages. The 8MNTTP/5RNTT variant, with its ultra-low halogen content of 100~200ppm and T5-grade fine powder, is tailored for high-precision consumer electronics. These solder pastes with excellent forming performance have been batch-validated on SMT production lines, making them a reliable domestic alternative to imported SMT solder paste.

Published: 2009-01-21

Post-Soldering Insulation Impedance Meets Standards: Selection of Domestic Solder Paste Brands

Post-welding insulation impedance compliance depends on the ionic cleanliness of solder paste residues and the compactness of the formed film. Domestic high-insulation solder pastes, through strict halogen control (ROL0 grade <500ppm), optimized rosin matrix and T4/T5 fine powder ratio, achieve 70%~100% solder wetting rate for QFN/DFN while ensuring the impedance between reflow solder paste joints is >10^9Ω. Series including LFP-JJY5RNTT, 5RR and 5RLJ have been mass-applied in communication module and automotive LED production lines.

Published: 2009-01-19

What is the Difference Between Lead-Free and Leaded Solder Paste? Reference for Domestic Solder Paste Brands

Lead-free solder paste and leaded solder paste have essential differences in melting point, soldering temperature, halogen content and applicable scenarios. Domestic solder paste brands such as Jia Jinyuan have covered the full range from zero-halogen high-temperature to ultra-low-temperature products. Their 0307/305 alloy powder T3-T5 specifications perform stably in QFN solder wetting rate, void control and laser welding adaptability, providing a reliable choice for production lines to replace leaded solder paste.

Published: 2009-01-17

How to Choose Between No-Clean Solder Paste and Water-Soluble Solder Paste, with Recommendations for Domestic Solder Paste

The choice between no-clean solder paste and water-washable solder paste must be closely aligned with the actual production line conditions. For example, when QFN solder wetting requirements are close to 100%, the 8MQP/5RQ series should be prioritized. For low-voidage scenarios such as automotive lighting, halogen-free 8M9P/5RR must be used. Water-washable solder pastes like 8MW1P/5RW1 are suitable for cost-sensitive production lines equipped with cleaning equipment. Domestic solder pastes now cover the full spectrum from ultra-low-temperature In52Sn48 to laser-specific 5RLJ. The key lies in matching the process window with reliability requirements.

Published: 2009-01-15

SMT Engineering Component Selection: Recommendations for Domestic Solder Paste Brands

When selecting solder paste for SMT engineering, it is necessary to closely align with the actual needs of the production line. Domestic solder paste has already demonstrated strong competitiveness in QFN solder climbing rate, halogen control, void rate, and adaptability to special processes. For example, the 8MQP/5RQ series achieves a solder climbing rate close to 100%, while the 8M9P/5RR realizes zero halogen and extremely low void rate. Engineering solder paste selection must be comprehensively evaluated based on alloy melting point, residue characteristics, and equipment compatibility.

Published: 2009-01-13

One-Time Pass of Reliability Testing, Domestic Solder Paste Brand

Domestic solder paste brand Jiajinyuan has achieved one-time pass in reliability testing for multiple halogen-free, lead-free high-temperature solder paste products on customer production lines, covering scenarios such as QFN/DFN high solder climbing, zero-halogen automotive lamps, laser welding, and aluminum/stainless steel soldering. Its 8MQP/5RQ series has a solder climbing rate close to 100%, and the 8M9P/5RR series has an extremely low void rate. The entire product line is compatible with T3-T5 alloy powder and a 240–260℃ reflow window, making it a cost-effective and reliable solder paste solution for replacing imported SMT solder paste.

Published: 2009-01-11

On-site Production Line Technical Support: This Domestic Solder Paste Manufacturer Can Provide It

This domestic solder paste manufacturer provides solder paste with in-depth production line on-site support, covering all scenarios including high solder climb for QFN/DFN, low voiding for automotive lighting, high precision for communication equipment, medium and low temperature for LED, and welding of stainless steel and aluminum materials. It mainly offers SMT solder paste series such as 8MQP/5RQ, 8M9P/5RR, and 8MW5/5RW5, with halogen precisely controlled to 0ppm. The alloy powder covers more than ten types including 0307/305/4258/In52Sn48, truly realizing one-stop support for domestic solder paste from material adaptation to process implementation.

Published: 2009-01-09

Various Soldering Defects of Solder Paste and Supporting Domestic Solder Paste Solutions

For high-frequency soldering defects on SMT production lines such as poor QFN solder climbing, solder balls, high voiding rate, and whitish residues, domestic solder paste can be quickly switched and adapted to improve defects by precisely matching alloy powder types (T3/T4/T5), halogen levels (ROL0 to ROL1), and rosin/water-washable types. SMT solder pastes including LFP-JJY5RQ-0307T4 and LFP-JJY5RR-305 have been batch-verified in automotive lamps, fingerprint locks, and Bluetooth modules, balancing high solder climbing rate with zero-halogen reliability.

Published: 2009-01-07