2004 Nov 10

2

Philips Semiconductors

Product specification

PNP high voltage transistors

BF421; BF423

FEATURES

• Low feedback capacitance.

APPLICATIONS

• Class-B video output stages in colour television and

professional monitor equipment.

DESCRIPTION

PNP transistors in a TO-92 plastic package.

NPN complements: BF420 and BF422.

PINNING

PIN

DESCRIPTION

1

base

2

collector

3

emitter

3

2

MAM285

2

1

3

Fig.1

Simplified outline (TO-92) and symbol.

ORDERING INFORMATION

QUICK REFERENCE DATA

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

BF421

SC-43A

plastic single-ended leaded (through hole) package; 3 leads

SOT54

BF423

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

collector-base voltage

open emitter

BF421

−−300

V

BF423

−−250

V

collector-emitter voltage

open base

BF421

−−300

V

BF423

−−250

V

peak collector current

−−100

mA

total power dissipation

−

830

mW

DC current gain

50

−

feedback capacitance

−

1.6

pF

transition frequency

60

−

MHz