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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.

Halogen-Free Solder Paste: Domestic Solder Paste Manufacturers Meeting ROHS Requirements

Halogen-free solder paste must balance ROHS compliance and solder wetting reliability in high-precision electronic assembly. The 8MQP/5RQ series launched by domestic solder paste manufacturer Jia Jinyuan has individual halogen content <900ppm and a solder wetting rate close to 100%. The 8MNTTP/5RNTT series has halogen content as low as 100~200ppm with transparent residue. Paired with T3-T5 alloy powders such as 0307/305, it has been verified to stably pass ROHS solder paste certification requirements in the mass production of QFN/DFN devices and communication terminals.

Published: 2009-05-25

Does Not Dry After Long Printing: This Domestic Solder Paste Is Suitable for SMT Production Lines

To address pain points such as prolonged printing without drying, solder paste slump, and poor solder wetting on SMT production lines, this domestically produced solder paste uses a rosin-based formula combined with 0307/T4 alloy powder. Within a reflow window of 240–255℃, it achieves nearly 100% solder wetting rate for QFN/DFN packages, with a halogen content below 900ppm and transparent residue. It balances printing stability and soldering reliability, making it a cost-effective choice as an alternative to imported printing solder paste, SMT solder paste, and domestic solder paste.

Published: 2009-05-23

Reducing Solder Beads: Recommended Domestic Solder Paste for SMT Mass Production

To address the challenge of solder bead control in SMT mass production, we recommend multiple domestic solder pastes validated on production lines, covering scenarios such as high-activity QFN solder climbing, halogen-free automotive lighting, laser welding, and water washing. By optimizing the alloy powder type, halogen content, and rosin system synergy, the probability of solder bead formation is reduced, meeting the triple demands of solder bead control, SMT solder paste stability, and domestic solder paste substitution and upgrading.

Published: 2009-05-21

Reflow Soldering Paste: Domestic Soldering Paste Tested by Multiple Factories

Multiple factories have tested and confirmed that domestic solder paste performs stably in reflow soldering applications. The 8MQP/5RQ series achieves a solder climbing rate close to 100%, the 8MNTTP/5RNTT series has a halogen content as low as 100~200ppm, and the 8M9P/5RR series delivers 0ppm zero halogen and extremely low voidage. These products cover scenarios including QFN/DFN, automotive lighting, high-precision communications, and ultra-low temperature laser welding. Domestic SMT solder paste replacement now has full temperature range and full process adaptability.

Published: 2009-05-19

Chip Solder Paste Application: How to Choose Domestic Solder Paste Brands

Chip solder paste mounting places extremely high demands on the activity, wetting ability, halogen residue, and alloy powder particle size matching of the solder paste. Among domestic solder paste brands, the Jiajinyuan LFP series covers all scenarios from ultra-low temperature to high temperature. The 8MQP/5RQ achieves nearly 100% solder wetting for QFN packages. The 8M9P/5RR is halogen-free and meets the low void requirements for automotive lighting. The 8MNTTP/5RNTT, with its hundred-ppm level halogen content and 00507BN fine powder, meets the high-precision chip mounting requirements for smartphone fingerprint sensors, truly bringing chip solder paste selection back to practical production line effectiveness.

Published: 2009-05-17

Power Board SMT, Cost-effective Domestic Solder Paste

The selection of solder paste for power boards must balance solder climbing capability, void rate, and halogen residue. Domestic solder pastes such as the 8MQP/5RQ series achieve nearly 100% solder climbing on QFN/DFN devices, while the 8M9P/5RR series is halogen-free with an extremely low void rate. The T4-grade 0307 alloy powder used in SMT solder paste forms stably within the 240–260°C reflow window. Domestic solder pastes now cover application scenarios ranging from communication motherboards to automotive lighting.

Published: 2009-05-15

LED Module Production: Reliable Domestic Solder Paste Brands

In LED module production, the selection of domestic solder paste directly determines solder wetting rate, void rate and cleaning difficulty. Jiajinyuan 8MQP/5RQ series LED solder paste achieves nearly 100% solder wetting in QFN/DFN packages; the 8M9P/5RR series module solder paste is halogen-free with an extremely low void rate; the 8MA series balances the conventional pitch of lighting LEDs and residue transparency. Multiple domestic solder pastes have passed production line verification, becoming cost-effective alternatives to imported LED solder pastes.

Published: 2009-05-13

How to Select Solder Paste Brands: These Domestic Solder Pastes Are Worth Sampling

Solder paste samples must closely align with actual production line requirements. Domestic solder pastes already have replacement capability in terms of QFN solder wetting rate, halogen control, void rate, and laser welding adaptability. The 8MQP/5RQ series achieves nearly 100% solder wetting, the 8M9P/5RR series delivers zero halogen and extremely low void rate, and the 5RLJ series is specifically optimized for jet valve dispensing. SMT solder paste selection should use process window matching, residue transparency, and post-soldering cleaning cost as hard indicators.

Published: 2009-05-11

High-Wettability Solder Paste: Complete List of Domestic Solder Paste Brands

High-wettability solder paste directly determines solder climb rate and void control in the soldering of fine-pitch devices such as QFN/DFN. Domestic solder paste brand Jiajinyuan covers the full spectrum from no-clean ROL0 to water-washable ORH1. Its 8MQP/5RQ series achieves nearly 100% solder climb, while the 8M9P/5RR series has an extremely low void rate and is suitable for automotive lighting. The selection of SMT solder paste must match the coupling relationship among alloy melting point, flux activity, and cleaning process.

Published: 2009-05-09

Recommendations for Domestic Anti-Collapse Solder Paste for Fine-Pitch Components

To address the common issue of solder collapse during the soldering of fine-pitch components such as 0.4mm pitch QFN and 0.3mm CSP, we recommend a range of field-tested anti-collapse solder pastes that cater to specific requirements including zero halogen, low voiding, and high solder climb. Among them, the 8MNTTP/5RNTT series achieves a solder climb rate of over 98% with transparent residue during reflow soldering on mobile phone motherboards, while the 8M9P/5RR series delivers a void rate of less than 3% on automotive LED lighting boards. All products use T4/T5 grade fine-pitch alloy powder and rosin-based flux vehicles, making them truly triple-positioned products that are anti-collapse solder pastes, fine-pitch solder pastes, and domestic solder pastes suitable for domestic production lines.

Published: 2009-05-07