PRF957 データシートの表示（PDF） - NXP Semiconductors.

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PRF957

UHF wideband transistor

NXP Semiconductors. 

Philips Semiconductors

UHF wideband transistor

Product specification

PRF957

FEATURES

• Small size

• Low noise

• Low distortion

• High gain

• Gold metallization ensures excellent reliability.

PINNING

PIN

1

base

2

emitter

3

collector

DESCRIPTION

APPLICATIONS

• Communication and instrumentation systems.

DESCRIPTION

Silicon NPN transistor in a surface mount 3-pin SOT323

package. The transistor is primarily intended for wideband

applications in the GHz-range in the RF front end of analog

and digital cellular telephones, cordless phones, radar

detectors, pagers and satellite TV-tuners.

handbook, halfpage

3

3

1

1

Top view

2

2

MAM062

Marking code: W2.

Fig.1 Simplified outline (SOT323) and symbol.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

Cre

feedback capacitance

fT

transition frequency

GUM

maximum unilateral power gain

NF

noise figure

Ptot

Rth j-s

total power dissipation

thermal resistance from junction

to soldering point

CONDITIONS

IC = 0; VCB = 6 V; f = 1 MHz

IC = 30 mA; VCE = 6 V; fm = 1 GHz

IC = 30 mA; VCE = 6 V;

Tamb = 25 °C; f = 1 GHz

ΓS = Γopt; IC = 5 mA; VCE = 6 V;

f = 1 GHz

Ts = 60 °C; note 1

Ptot = 270 mW

MIN.

−

−

−

TYP.

0.4

8.5

15

MAX. UNIT

−

pF

−

GHz

−

dB

−

1.3 −

dB

−

−

270 mW

−

−

425 K/W

Note

1. Ts is the temperature at the soldering point of the collector pin.

1999 Jul 23

2

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