Surface Mount PCB Jumper Rework: Measure Both Joints, Not Just the Hot-Air Setpoint
Develop an assembly-specific rework profile for surface mount PCB jumpers. Record both joint temperatures, protect nearb...
Technical Guides & Company Updates — Page 9
Explore Hongchuan Metals technical guides, product information and company updates. Review PCB busbar, solder terminal and SMT nut selection considerations alongside the product catalog.
SMT Nut Torque Units: Convert kgf·cm, N·cm and N·m
A bare Kgf label cannot establish SMT nut torque. Convert complete torque units, verify the test type and preserve trace...
SMD Busbar X-ray Void Percentage: Define the ROI and Projected Area
Make SMD busbar void reports reproducible by defining the inspection region, segmentation and projected area. A 2D void ...
PCB Busbar Conductivity Reports: Convert %IACS, MS/m and Resistivity
Convert PCB busbar conductivity and resistivity at a matching reference temperature. Check material report traceability ...
PCB Solder Terminal Derating Curves: Ambient Temperature, Loaded Neighbors and Correction
Read current-temperature curves with their test conditions. Distinguish base and corrected curves, avoid applying correc...
Surface Mount PCB Jumpers After Depaneling: Board Deflection vs Microstrain
Validate surface mount PCB jumpers through local strain histories and joint checks, not board displacement alone. Define...
SMT Nut Bottom-Surface Coplanarity: Agree Support, Sampling and Plane Evaluation
Define the measured surface, support condition, sampling, plane evaluation and uncertainty before accepting an SMT nut. ...
SMD Busbar Stencil Area Ratio: Aperture Size, Thickness and Paste Transfer
Calculate stencil area ratio separately from aspect ratio and nominal paste volume. Evaluate each segmented aperture and...
PCB Busbar Loop Inductance: Estimating Voltage Overshoot from di/dt
Estimate the inductive contribution to switching overshoot with L × di/dt, then review the complete PCB busbar loop, ret...
THR PCB Solder Terminals: Convert Metal Weight Loading to Paste Volume
Metal loading by weight is not solder volume fraction. Estimate pin-in-paste volume using densities, then validate print...
Surface Mount PCB Jumper Clearance: Post-Reflow Gap and Tolerance Checks
Separate jumper span, total length and assembled clearance. Check the minimum post-reflow gap without treating catalog h...
SMT Nut Thread Acceptance: GO/NO-GO Gauges vs Screw Trial Fitting
Match thread size, pitch, tolerance class and gauge standard for SMT nut inspection. Separate dimensional acceptance fro...