Heavy Copper PCB for Power Distribution and Thermal Applications
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General Specification:
Layers: 2L
Base material: FR4
Thickness: 1.6mm
Minimum hole diameter: 0.4mm
Minimum width/space: 0.25mm/0.15mm
Heavy Copper: 4/4oz
Finish: HAL-LF
This product is a heavy copper PCB for power-related designs where current carrying, heat dissipation, and mechanical robustness are more important than a standard rigid PCB structure. Typical application areas include high power distribution, heat dissipation, planar transformers, power converters, and new energy vehicles.
Heavy copper boards require more careful review than ordinary double-sided PCB projects. Copper weight, spacing, etching tolerance, via structure, and thermal behavior all affect whether the finished board can support the intended current load and operating environment.
Heavy Copper for Power Electronics
Heavy copper can support stronger current paths and improved thermal spreading, but it also increases manufacturing difficulty. Thicker copper affects trace definition, copper balance, lamination behavior, solder mask coverage, and final inspection.
If the design also uses multilayer construction, the stack-up should be reviewed together with copper distribution and insulation spacing. For broader fabrication context, see PCB manufacturing capabilities.
Application Fit
This heavy copper PCB is suitable for power distribution modules, heat dissipation designs, planar transformers, power converters, new energy vehicle electronics, and other products where current capacity and thermal management are key design factors.
What to Confirm Before Production
Before production, confirm the copper weight on each layer, stack-up, minimum spacing, hole and via requirements, operating current, temperature rise target, board thickness, and surface finish. If the design includes high voltage or high current areas, clearance and creepage requirements should be shared during quotation.
Custom Heavy Copper PCB Manufacturing
For quotation and manufacturability review, provide Gerber files, drill files, and stack-up drawing, copper weight requirements, current load notes, thermal requirements, surface finish, quantity, and application background. For file preparation questions, see the FAQ on design and technical issues.