SMT nut pad lift and annular cracking after screw tightening: torque, PCB thickness, pull strength and thermal cycling
A practical guide to lifted pads, annular cracks and fractured solder joints around SMT nuts after screw tightening, cov...
Guide | Technical Guides & Company Updates — Page 16
Explore Hongchuan Metals technical guides, product information and company updates. Review PCB busbar, solder terminal and SMT nut selection considerations alongside the product catalog.
PCB welding terminal flux residue after soldering: cleaning, ionic contamination, corrosion and contact resistance troubleshooting
A practical guide to flux residue around PCB welding terminals after soldering, covering cleaning process, ionic contami...
How to test copper-aluminum composite busbar peel strength: interface delamination, bending and contact resistance validation
A practical guide to copper-aluminum composite busbar peel strength and interface delamination, covering metallurgical b...
SMD busbar reflow solder voids and poor wetting: stencil, solder fillet, X-ray and temperature-rise validation
A practical guide to SMD busbar reflow solder voids and poor wetting, covering stencil openings, paste volume, pad oxida...
Solder in SMT nut threads after reflow: stencil opening, paste volume and thread-gauge inspection
Solder in SMT nut threads can affect bolt assembly, torque and locking. This guide covers stencil openings, paste volume...
PCB welding terminal selective versus wave soldering: thermal mass, hole fill and production window
Selective versus wave soldering for PCB welding terminals depends on thermal mass, board shadowing, flux, preheat, solde...
Copper-aluminum transition busbar bolted-joint design: washers, torque, corrosion and contact resistance
Copper-aluminum bolted-joint reliability depends on interface area, washer, torque, finish, corrosion and post-cycle cla...
SMD busbar pad-exit heating: copper neck-down, via arrays and parallel current-sharing troubleshooting
When an SMD busbar body is cool but its pad exit is hot, the issue is often copper neck-down, via capacity, inner-layer ...
How to measure PCB welding terminal temperature rise: current points, contact resistance and acceptance
A practical method for PCB welding terminal temperature-rise testing, covering current conditions, terminal body, solder...
How to choose tin, nickel and silver plating for SMD busbars: solderability, salt spray and contact resistance
A practical SMD busbar plating guide covering tin, nickel and silver finishes for solderability, contact resistance, sal...
How to choose M2, M3 and M4 SMT nuts: PCB thickness, torque and pull-out force
A practical guide to M2, M3 and M4 SMT nut selection, covering PCB thickness, tightening torque, pull-out force, shear l...
Why copper-aluminum connectors corrode: galvanic corrosion, plating and contact resistance
A practical guide to galvanic corrosion in copper-aluminum connectors, covering Cu-Al interfaces, tin or nickel plating,...