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The communication server industry covers products such as switches, 5G base stations, server motherboards, and high-speed connectors, with equipment facing harsh conditions including high-power heat dissipation, high-speed signal transmission, and outdoor temperature cycling.
Published: 2026-08-24
A Practical Soldering Guide for Communication Motherboards for SMT Engineers, focusing on the material selection logic of solder paste and solder bars in high-frequency and high-speed signal scenarios. It covers hard parameters such as storage temperature and humidity, metal content, viscosity, particle size distribution, and reflow peak temperature. Combined with the stringent requirements for solder joint wettability and residual ion contamination of 0.3mm fine-pitch BGA and 10Gbps SerDes routing, it provides the specific application boundaries of IPC-J-STD-005 certified solder paste and Sn96.5Ag3.0Cu0.5 solder bars.
Published: 2026-08-27
The expansion of 5G base station construction scale has driven the application demand for lead-free solders, bringing new growth to high-reliability welding materials.
Published: 2026-08-24When soldering communication base station motherboards with high-frequency boards, it is necessary to cope with long-term cyclic working conditions from -40℃ to +85℃. Jiajinyuan optimized solder paste selection, stencil aperture compensation, and segmented temperature control of the reflow soldering profile, reducing the solder joint void rate to ≤8%. After 2000 thermal shocks, the impedance fluctuation remains <3%, ensuring the stability of 5G millimeter-wave signal transmission.
Published: 2024-10-14Circuit board soldering faces multiple challenges of high reliability, fine pitch, and heat-sensitive components in the medical, communication, and new energy sectors. Based on practical production line experience, this paper focuses on key processes such as solder paste selection, stencil aperture design, reflow profile optimization, and BGA rework, emphasizing solder joint wettability, void rate control, and cold solder joint identification methods. All parameters are derived from measured data from Jia Jinyuan production lines, without theoretical deduction.
Published: 2023-01-225G device solder must meet the dual stringent requirements of high-frequency signal integrity and thermal cycle reliability. Jinyuan JNY-5G188 lead-free solder achieves zero void rate soldering in scenarios such as base station power amplifier modules and router RF motherboards. Its low-silver ratio and active flux synergistically optimize wetting speed and residue insulation.
Published: 2022-11-11Voids can easily cause fatal defects such as cold solder joints, bridging, and BGA cracking in the SMT process of new energy, medical, and communication electronic products. Production line data from Jia Jinyuan shows that the failure rate of BGA devices with a void rate exceeding 8% increases by 3.2 times. Closed-loop control must be achieved through stencil aperture optimization, dynamic calibration of squeegee pressure, and real-time monitoring of nitrogen purity.
Published: 2020-10-04BGA soldering in 5G communication and energy storage motherboards faces challenges of high thermal stress, long-term aging, and high-frequency signal integrity. By optimizing stencil aperture design, segmented temperature control of reflow profile, and post-soldering full X-ray inspection process, JJY ensures that BGA solder joints have no void expansion and no abnormal IMC thickening after 1000 hours of accelerated aging at 85℃/85%RH, achieving true long-term reliability.
Published: 2020-08-15X-Ray inspection is an irreplaceable quality control method in the mass production of new energy battery management systems, medical imaging equipment motherboards, and 5G communication base station PCBs. It can penetrate multi-layer stacked structures to accurately identify defects invisible to the naked eye such as BGA cold solder joints, PTH via copper fractures, and embedded capacitance offset. Jiajinyuan X-Ray inspection equipment achieves a 99.2% defect capture rate at a 0.5μm detail resolution, and has become a mandatory verification step before batch shipment on high-end SMT production lines.
Published: 2019-01-21Reliability testing of PCBA for medical communication applications must comply with stringent standards such as IEC 60601-1 and AAMI TIR18. Its PCBA reliability test items cover temperature cycling, highly accelerated life testing, vibration and shock, and damp heat with bias. For each test, stress parameters must be set based on real production line failure data. Production line measurements by Jia Jinyuan show that for BGA solder joints, a cracking rate exceeding 3% after 500 temperature cycles from -40°C to +85°C is deemed a process red line.
Published: 2015-06-27Our technical team is always ready to provide professional solder material selection advice and SMT process solutions.