2731-20R1

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2731-20

20Watts, 36 Volts, 100us, 10%

Radar 2700-3100 MHz

GENERAL DESCRIPTION

The 2731-20is an internally matched, COMMON BASE bipolar transistor

capable of providing 20Watts of pulsed RF output power at 100 pulse width,

10% duty factor across the 2700 to 3100 MHz band. The transistor prematch

and test fixture has been optimized through the use of 10 Ohm TRL Analysis.

This ceramic sealed transistor is specifically designed for S-band radar

applications. It utilizes gold metallization and emitter ballasting to provide high

reliability and supreme ruggedness.

CASE OUTLINE

55KCR-1

Common Base

ABSOLUTE MAXIMUM RATINGS

Maximum Power Dissipation

Device Dissipation @ 25

70 W

Maximum Voltage and Current

65 V

3.0 V

1.85 A

Maximum Temperatures

Storage Temperature

-65 to +200

°C

Operating Junction Temperature

+200

°C

ELECTRICAL CHARACTERISTICS @ 25

°°°°C

SYMBOL

CHARACTERISTICS

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Power Output

F=2700-3100 MHz

20

W

Power Gain

Pulse Width = 100s

8.2

dB

η

c

Collector Efficiency

Duty Factor = 10 %

45

%

Return Loss

Power Input = 3W

-7

dB

VSWR-S

Load Mismatch Stability

Vcc = +36V

1.5:1

VSWR-T

Load Mismatch Tolerance

F = 2700, 2900, 3100 MHz

3:1

FUNCTIONAL CHARACTERISTICS @ 25

°°°°C

Ices

Collector to Emitter Leakage

Vce=40V

1.5

mA

Collector to Emitter Breakdown

Ic = 10 mA

65

V

Thermal Resistance

2.5

°C/W