February 2012

Doc ID 12193 Rev 3

1/10

10

STFN42

High voltage fast-switching

NPN power transistor

Features

Applications

Description

This device is a high voltage fast-switching NPN

power transistor, manufactured using high voltage

multi-epitaxial planar technology for high

switching speeds.

It employs a cellular emitter structure with planar

edge termination to enhance switching speeds,

while maintaining a wide RBSOA.

Figure 1.

Internal schematic diagram

SOT-89

4

1

2

3

(2, 4)

C

(1)

B

E

(3)

Table 1.

Device summary

Order code

Marking

Packages

Packaging

STFN42

N42

SOT-89

Tape and reel

www.st.com

Obsolete

Product(s)

- Obsolete

Product(s)