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ENIG Thick Copper PCB Highly Efficient Thermal Conduction Inverter
♦ What is Thick copper PCB?
Thick copper PCB refers to a circuit board formed by bonding a layer of copper foil with a thickness of 2 ounces (oz, about 62.5 microns) or more to FR-4 or other substrates during the printed circuit board (PCB) manufacturing process.
♦ Features of Thick Copper PCB
Excellent conductivity: Thick copper improves current flow, lowers resistance, supports high-power/high-frequency circuits, and boosts speed/reliability.
Strong load capacity: Thicker foil increases rigidity, resists pressure/bending/thermal stress, and suits harsh environments.
Efficient heat dissipation: Rapid heat spreading reduces thermal stress, ensures stable operation of high-power devices, and extends lifespan.
High thermal stability: Minimizes heat buildup, maintaining performance at high temperatures.
Design flexibility: Enables wider traces and tighter spacing for complex/high-density circuits.
♦ Applications of Thick Copper PCB
♦ Copper Thickness Selection Basis
1-2oz: conventional power modules, medium current circuits (<50A).
3-4oz: high power LED drivers, inverters (50-100A).
5oz and above: electric vehicle inverters, photovoltaic combiner boxes (>100A).
♦ Technical Parameters
Item |
Specification |
Laers |
1~32 |
Board thickness |
0.1mm-7.0mm |
Material |
FR-4,CEM-1/CEM-3,PI,High Tg,Rogers |
Max panel size |
32"×48"(800mm×1200mm) |
Min hole size |
0.075mm |
Min line width |
3mil(0.075mm) |
Surface finish |
OSP,HASL,Imm Gold/Nickel/Ag, Electric gold |
Copper thickness |
0.5-7.0OZ |
Soldermask |
Green/Yellow/Black/White/Red/Blue |
Silkscreen |
Red/Yellow/Black/White |
Min PAD |
5mil(0.13mm) |
Inter package |
Vacuum |
Outer package |
Carton |
Outline tolerance |
±0.75mm |
Hole tolerance |
PTH:±0.05 NPTH:±0.025 |
Certificate |
UL,ISO 9001,ISO14001,IATF16949 |
Special request |
Blind hole+Gold finger + BGA |
Material Suppilers |
Shengyi, KB, Nanya, ITEQ,etc. |