Amateur Extra Class: 2020–2024
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E6A12:

Why do many MOSFET devices have internally connected Zener diodes on the gates?

  1. To provide a voltage reference for the correct amount of reverse-bias gate voltage
  2. To protect the substrate from excessive voltages
  3. To keep the gate voltage within specifications and prevent the device from overheating
  4. To reduce the chance of static damage to the gate
E6A01 E6A02 E6A03 E6A04 E6A05 E6A06 E6A07 E6A08 E6A09 E6A10 E6A11 E6A12