diotec (Diotec Semiconductor AG)

Diotec Semiconductor AG

http://www.diotec.com/

Oct 1, 2025

How a 7mΩ Difference Can Make or Break Your EV Pump Design

In EV coolant pumps (12 V to 48 V, 120–300 W), every milliohm counts.


  • Higher RDS(on) = higher conduction losses
  • More losses = more heat in the power stage
  • More heat = shorter lifetime or bigger heat sinks

That is the difference between compact and oversized.

Between stable and overstressed.

Our DI065N08D1-AQ keeps those numbers under control:

  • Junction temperature up to 175°C
  • Low gate charge for fast switching
  • RDS(on) < 7 mΩ

A few milliohms at the MOSFET level decide whether your cooling system runs reliably for years….

Or it creates design headaches from day one.