PRF957 datasheet(9/16 Pages) PHILIPS

9 / 16 page

1999 Jul 23

Philips Semiconductors

Product speciﬁcation

UHF wideband transistor

PRF957

APPLICATION INFORMATION

SPICE parameters for the PRF957 die

Notes

1. These parameters have not been extracted, the

default values are shown.

2. Cbpb, Cbpe: base-bondpad and emitter-bondpad

capacitance to collector.

List of components (see Fig.14)

SEQUENCE No.

PARAMETER

VALUE

UNIT

0.963

102.3

−

1.002

−

VAF

64.75

IKF

841.1

ISE

35.77

2.138

−

90.16

−

1.000

−

VAR

3.198

IKR

25.77

ISC

156.6

1.047

−

6.071

Ω

IRB

0.000

µA

RBM

2.478

Ω

0.164

Ω

1.315

Ω

19(1)

XTB

0.000

−

20(1)

1.110

21(1)

XTI

3.000

−

CJE

1.161

VJE

600.0

MJE

0.394

−

3.073

XTF

10.25

−

VTF

4.599

ITF

53.49

PTF

0.000

deg

CJC

409.9

VJC

287.1

MJC

0.111

−

XCJC

0.104

−

0.000

35(1)

CJS

0.000

36(1)

VJS

700.0

37(1)

MJS

0.000

−

0.888

−

39(2)

Cbpb

73.00

40(2)

Cbpe

131.00

DESIGNATION

VALUE

UNIT

Cbe

2fF

Ccb

100

Cce

100

0.34

0.10

0.34

0.60

SEQUENCE No.

PARAMETER

VALUE

UNIT

QLB = 50; QLE = 50;

QLB(f) = QLB√(f/fc);

QLE(f) = QLE√(f/fc);

fc = corner frequency = 1 GHz.

Fig.14 Package equivalent circuit SOT323.

handbook, halfpage

MBC964

L B

L E

C cb

Cbe

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