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Here you can find knowledge about PCB Wave Soldering Solder Bar, 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.
High-frequency board welding imposes extremely high requirements on the thermal sensitivity of the substrate. Materials such as PTFE and ceramic-filled PP generally have a glass transition temperature below 170°C. If the peak reflow temperature exceeds 260°C, it can easily cause delamination, blistering, or dielectric constant drift. Actual measurements on Jiajinyuan's production line show that 255°C is the safe threshold for most high-frequency board welding. Thermal damage must be avoided through stepwise heating, reducing residence time in the high-temperature zone, and nitrogen atmosphere control.
Published: 2015-10-08The no-clean and water-washable formulations for PCBA soldering materials need to balance ionic residue control and post-soldering surface cleanliness. The Jiajinyuan series formulations achieve stable performance with rosin-based residue <0.5μg/cm2 and halogen content <0.1wt% in actual production lines, meeting the process requirements for high-density PCBA soldering materials for 01005 components and 0.3mm pitch BGA.
Published: 2015-09-05Rework soldering is a critical process in PCBA repair that demands extremely high precision and thermal control. This paper focuses on the full process of desoldering and replacing chips such as BGA and QFN, covering hot air gun parameter setting, stencil aperture matching, solder paste selection, and key points of post-soldering X-ray inspection. All parameters are derived from measured data on the JJY production line, emphasizing the coordinated control of temperature curve gradients, nozzle vacuum values, and PCB delamination risks.
Published: 2015-07-12Reliability 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: 2015-06-27When soldering precision sensor circuit boards with immersion silver boards, the excellent solder joint stability stems from the high density of the immersion silver layer, controllable interfacial reaction, and strong thermal cycle resistance. Jiajinyuan immersion silver boards have a measured thrust of over 85gf on 0.15mm fine-pitch BGA and 0.3mm pitch MEMS sensor pads, with an IMC thickness fluctuation of less than 0.12μm after reflow, significantly outperforming conventional OSP boards.
Published: 2015-01-17OSP board soldering is a critical process in SMT production lines that is highly prone to cold solder joints, poor wetting, and pad oxidation failures. It is necessary to optimize stencil aperture design, solder paste selection, reflow profile, and first-article verification process in response to the thermal sensitivity, thin-layer characteristics, and weak adhesion to the copper substrate of the OSP anti-oxidation protective film. Otherwise, even if the placement accuracy meets the standards, batch issues such as dull solder joints, insufficient solder climb height, or abnormal ICT test impedance will occur after reflow.
Published: 2014-11-10Wave soldering of thick-copper PCBs is prone to solder joint voids, poor wetting, and uneven heat absorption caused by copper thickness. Using Jiajinyuan high-wettability solder bars can significantly improve solder climb height and the consistency of fillet formation, with particularly pronounced process advantages in structures with copper thickness above 2oz, large-area copper foils, and multilayer thick-copper constructions.
Published: 2014-08-25Soldering thick-copper PCBs places extremely high demands on solder paste rheology, wetting force, and anti-slump performance. During selection, practical production-line issues caused by thick copper—such as rapid heat dissipation, high pad thermal mass, and high tendency of printing misalignment—must be comprehensively considered. Priority should be given to thick-copper solder pastes with high metal content, low thixotropic index, and specially formulated active flux, to ensure sufficient wetting and reliable solder joint formation under conventional reflow profile conditions.
Published: 2013-09-16Gold-plated board soldering undertakes high-reliability connection tasks in the manufacturing of medical and precision instrument PCBs. Its surface process must balance solderability, corrosion resistance, and long-term signal stability. Gold-plated board soldering is particularly suitable for scenarios requiring micro pads, high-frequency devices, and low contact resistance. Gold layer thickness control, nickel barrier integrity, and reflow parameter matching are key bottlenecks for mass production yield.
Published: 2013-06-11High-frequency board welding is extremely sensitive to solder paste voiding rate. Dielectric parameter fluctuations caused by voids directly degrade signal integrity. Jiajinyuan low-void solder paste, by optimizing metal content, flux volatilization gradient and reflow wetting dynamics, stably controls the voiding rate of BGA solder joints within 3.2% in 5G RF module tests, significantly suppressing insertion loss drift in high frequency bands.
Published: 2013-05-22Our technical team is always ready to provide professional solder material selection advice and SMT process solutions.