DN2540

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

Linear amplifiers

Constant current sources

Power supply circuits

Telecom

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General Description

The Supertex DN2540 is a low threshold 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

coefficient inherent in MOS devices. Characteristic of all

MOS structures, this device is free from thermal runaway and

thermally-induced secondary breakdown.

Supertex’s vertical DMOS FETs are ideally suited to a

wide range of switching and amplifying applications where

high breakdown voltage, high input impedance, low input

capacitance, and fast switching speeds are desired.

N-Channel Depletion-Mode

Vertical DMOS FETs

Ordering Information

Device

Package Options

BV

(V)

R

DS(ON)

max

(Ω)

I

DSS

min

(mA)

TO-92

TO-220

DN2540

DN2540N3-G

DN2540N5-G

DN2540N8-G

400

25

150

-G indicates package is RoHS compliant (‘Green’)

(1) Same as SOT-89.

Absolute Maximum Ratings

Parameter

Value

Drain-to-source voltage

BV

DSX

Drain-to-gate voltage

BV

DGX

Gate-to-source voltage

±20V

Operating and storage

temperature

Soldering temperature*

Absolute Maximum Ratings are those values beyond which damage to the

device may occur. Functional operation under these conditions is not implied.

Continuous operation of the device at the absolute rating level may affect

device reliability. All voltages are referenced to device ground.

*Distance of 1.6mm from case for 10 seconds.

Pin Configurations

3-Lead TO-243AA (N8)

3-Lead TO-220 (N5)

3-Lead TO-92 (N3)

GATE

SOURCE

DRAIN

DRAIN

GATE

SOURCE

DRAIN

GATE

SOURCE

DRAIN

DRAIN