IGBT Skived Fin Heat Sink

An IGBT module concentrates heat in a small chip area. The base plate spreads it sideways before the fins move it into the air. Thicker, flatter bases spread heat more evenly and reduce the temperature difference across the module.

Why the base matters

For these parts we usually build the base to 10-15 mm and control flatness after milling. The mounting face is machined to suit the thermal interface material specified by the customer, so no gap opens up after assembly.

Assembly notes

Keep fin channels aligned with the airflow. Tighten the module to the torque specified by the customer — over-torquing a thin base bows it and raises contact resistance.

Process notes

Billet cutting, CNC skiving, base milling and flatness correction, drilling and tapping, deburring and cleaning, surface finishing, flatness sampling before shipment.

Applications

IGBT modules, variable frequency drives, welding machines, EV charger power units, motor controllers.