SMT Solder Paste Manufacturers.
Focused on SMT soldering processes, a one-stop electronic soldering solutions provider.
Here you can find knowledge about SMT 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.
SMT printing is a key process in which SMT stencils evenly transfer solder paste to PCB pads, directly affecting placement accuracy and reflow soldering yield. In actual production lines, solder paste viscosity, stencil aperture size, squeegee pressure, and printing speed must be coordinated and matched; any slight deviation will cause typical defects such as insufficient solder, solder bridging, or misalignment.
Published: 2024-07-28
Flux paste and solder paste have completely different functional roles in SMT placement soldering. Flux paste contains no metal powder and has no forming capability, so it cannot replace solder paste to achieve solder joint bonding and structural support. It can only serve as an auxiliary supplement to solder paste or a flux reinforcement method for local rework.
Published: 2024-04-09SMT placement is a core process in electronic assembly, and its quality is directly affected by the accuracy of solder paste printing, the positioning repeatability of the placement machine, and the matching degree between components and solder paste-coated pads. Jiajinyuan placement machines achieve ±0.03mm placement accuracy through a high-rigidity mechanical structure and a closed-loop vision system, ensuring that components can be accurately placed on solder paste-coated pads in complex packages ranging from 0201 to QFN48.
Published: 2023-08-24The solder manufacturer provides full-cycle support for wave soldering processes on SMT production lines, covering solder bar selection, wave parameter matching, dross control, and root cause analysis of solder bridges and missed soldering. Jiajinyuan solder manufacturer, through on-site stationed debugging and dynamic monitoring of molten solder metal composition, helps customers increase the first-pass yield of wave soldering from 89.3% to 99.1%, significantly reducing manual rework hours and cold solder joint repair costs.
Published: 2023-07-25For soldering gold-plated boards, it is necessary to balance the thickness of the pad gold layer with the activity matching of the flux to avoid black pad, cold solder joints, and excessive IMC growth. Jia Jinyuan's gold-plated board soldering solution has achieved a soldering defect rate below 0.3% in aerospace modules and medical equipment, with the key lying in the collaborative implementation of solder paste selection, reflow profile gradient control, and an oxygen content ≤100ppm under a nitrogen atmosphere.
Published: 2022-11-25Using expired solder paste directly causes batch defects on SMT production lines, such as cold solder joints, increased solder beads, and printing misalignment. Viscosity degradation and reduced flux activity of expired solder paste are the root causes. Strictly implementing solder paste control processes can avoid more than 90% of mounting defects, with particular attention to key nodes such as refrigerated storage, warm-up time, post-opening usage time limit, and batch traceability.
Published: 2022-05-28When SMT mounting 01005 and BGA precision components, extremely high placement accuracy is required. It is necessary to simultaneously control the nozzle vacuum stability, visual system calibration error, PCB thermal deformation, and solder paste collapse state. Any slight deviation will cause batch defects such as tombstoning, cold solder joints, and solder bridges. Actual measurements on the Jiajinyuan production line show that a placement offset exceeding 25 μm for 01005 devices leads to a 37% increase in open circuit rate after reflow. Poor coplanarity of BGA solder balls is directly related to placement pressure fluctuations exceeding 0.3 N.
Published: 2022-01-28High-tack solder paste effectively addresses solder paste collapse, component misalignment, and even component drop-off issues on SMT production lines caused by planned downtime, equipment failures, or line changeovers by enhancing the initial adhesion strength and high-temperature tack retention of surface-mount solder paste. It is particularly suitable for ultra-small components such as 0201 and 01005, as well as double-sided reflow processes. Its tack can be maintained for more than 4 hours at room temperature and remains stable in a 60°C environment, avoiding the significant tack decay that occurs in traditional solder paste after only 1.5 hours of downtime.
Published: 2022-01-27BGA voiding is a typical SMT defect that directly affects device heat conduction and solder joint reliability. Production line data from Jiajinyuan shows that a void rate exceeding 25% triggers batch rework. Based on real retrospective cases, this paper conducts a two-way investigation from four key dimensions: solder paste activity degradation, deviations in stencil aperture design, peak temperature fluctuations in the reflow profile, and insufficient nitrogen purity, clarifying the coupling relationship between material batch anomalies and printing parameter drift.
Published: 2021-11-03SMT stencils face frequent bridging and solder ball defects in fine-pitch IC printing. Micro-hole laser stencils significantly reduce short-circuit rates on devices with a pitch below 0.3mm by precisely controlling aperture size, wall roughness, and taper structure. Mass production verification by Jiajinyuan shows that bridging defects decreased by 62%, solder ball occurrence reduced by 78%, directly improving the first-pass yield.
Published: 2021-08-14Our technical team is always ready to provide professional solder material selection advice and SMT process solutions.