CYStech Electronics Corp.

Spec. No. : C235A3-A

Revised Date : 2004.08.0

5

Page No. : 1/3

BF421A3

CYStek Product Specification

PNP Epitaxial Planar Transistor

BF421A3

Description

• PNP high voltage transistors in a TO-92 plastic package.

• Complementary to BF420A3.

Features

• Low feedback capacitance.

Applications

• Class-B video output stages in color television and professional monitor equipment.

Symbol

Outline

Parameter

Symbol

Conditions

Min

Max

Unit

Collector-Base Voltage

Open emitter

-

-300

V

Collector-Emitter Voltage

Open base

-

-300

V

Emitter-Base Voltage

Open collector

-

-5

V

Collector Current (DC)

-

-50

mA

Peak Collector Current

-

-100

mA

Peak Base Current

-

-50

mA

Power Dissipation

Pd

Tamb

-

830

mW

Junction Temperature

Tj

-

150

°C

Storage Temperature

Tstg

-65

+150

°C

Operating Ambient Temperature

Tamb

-65

+150

°C

Note : Transistor mounted on a printed-circuit board.

BF421A3

TO-92

B：Base

C：Collector

E：Emitter

E C B