1997 Jul 08

2

Philips Semiconductors

Product specification

NPN medium frequency transistors

BF494; BF495

FEATURES

• Low current (max. 30 mA)

• Low voltage (max. 20 V).

APPLICATIONS

• HF applications in radio and television receivers

• FM tuners

• Low noise AM mixer-oscillators

• IF amplifiers in AM/FM receivers.

DESCRIPTION

NPN medium frequency transistor in a TO-92; SOT54

plastic package.

PINNING

PIN

DESCRIPTION

1

base

2

emitter

3

collector

Fig.1

Simplified outline (TO-92; SOT54)

and symbol.

3

2

MAM258

3

1

2

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

collector-base voltage

open emitter

−

30

V

collector-emitter voltage

open base

−

20

V

peak collector current

−

30

mA

total power dissipation

−

300

mW

DC current gain

BF494

67

220

BF495

35

125

transition frequency

120

−

MHz