QST4

Transistors

Rev.C

1/2

Low frequency amplifier

QST4

Application

Low frequency amplifier

Driver

Features

1) A collector current is large.

−250mV

External dimensions (Unit : mm)

1.6

2.8

ROHM : TSMT6

QST4

Abbreviated symbol : T04

Each lead has same dimensions

Absolute maximum ratings (Ta=25

°C)

Parameter

Symbol

Tj

Tstg

Limits

−15

−12

−6

−3

500

150

−55 to +150

−6

∗1

Unit

V

V

V

A

A

mW

°C

°C

∗2

1.25

Each Termminal Mounted on a Recommended

∗1

∗2

∗3

Collector-base voltage

Collector-emitter voltage

Emitter-base voltage

Collector current

Power dissipation

Junction temperature

Range of storage temperature

=1ms

Mounted on a 25mm

t

Equivalent circuit

(4)

(5)

(6)

(1)

(2)

(3)

Electrical characteristics (Ta=25

°C)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Conditions

−

280

−

MHz

−15

−−

V

=−10µA

−12

−−

V

=−1mA

−6

−−

V

=−10µA

−−

−100

nA

=−15V

−−

−100

nA

=−6V

−−120

−250

mV

270

−

680

−

Cob

−

30

−

pF

∗

∗

Collector-base breakdown voltage

Collector-emitter breakdown voltage

Emitter-base breakdown voltage

Collector cutoff current

Emitter cutoff current

Collector-emitter saturation voltage

DC current gain

Transition frequency

Collector output capacitance

∗ Pulsed