General Description
The Supertex DN3145 is a depletion-mode (normally-on) transistor utilizing an advanced vertical DMOS structure and Supertex’s well-proven silicon-gate manufacturing process. This combination produces a device with the power handling capabilities of bipolar transistors and with the high input impedance and positive temperature coeffi cient inherent in MOS devices. Characteristic of all MOS structures, this device is free from thermal runaway and thermally-induced secondary breakdown.

Features
► High input impedance
► Low input capacitance
► Fast switching speeds
► Low on resistance
► Free from secondary breakdown
► Low input and output leakage

Applications
► Normally-on switches
► Solid state relays
► Converters
► Constant current sources
► Power supply circuits
► Telecom