1997 Sep 10

2

Philips Semiconductors

Product specification

NPN wideband cascode transistor

BFC520

FEATURES

• Small size

• High power gain at low bias current and high

frequencies

• High reverse isolation

• Low noise figure

• Gold metallization ensures excellent reliability

APPLICATIONS

• Low noise, high gain amplifiers

• Oscillator buffer amplifiers

• Wideband voltage-to-current converters.

DESCRIPTION

Cascode amplifier with two discrete dies in a surface

mount, 5-pin SOT353 (S-mini) package. The amplifier is

primarily intended for low power RF communications

equipment, such as pagers and cordless phones and has

a very low feedback capacitance resulting in high isolation.

PINNING - SOT353

SYMBOL

PIN

DESCRIPTION

1

base 2

2

emitter 1

3

base 1

4

collector 1/emitter 2

5

collector 2

Fig.1 Simplified outline and symbol.

handbook, halfpage

3

1

4

5

2

Top view

MAM212

c2

b2

c1/e2

b1

e1

QUICK REFERENCE DATA

ground.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

−−

10

fF

maximum isolation

−−63

−

dB

−−38

−

dB

MSG

maximum stable power gain

(narrowband)

−

31

−

dB

−

19

−

dB

F

noise figure

−

1.3

1.6

dB

thermal resistance from

junction to soldering point

single loaded

−−

230

K/W

double loaded

−−

115

K/W

s

⁄

2