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1

PTB 20235

70 Watts, 2.1–2.2 GHz

Wideband CDMA Power Transistor

Package 20225 *

20235

LOT

CODE

0

20

40

60

80

100

120

04

8

12

16

20

Input Power (Watts)

f = 2.2 GHz

Typical Output Power vs. Input Power

Description

The 20235 is a class AB, NPN, push-pull RF power transistor intended

for 26 Vdc operation from 2.1 to 2.2 GHz. Rated at 70 watts PEP

minimum output power, it is specifically intended for operation as a

final stage in Wide CDMA systems. Ion implantation, nitride surface

passivation and gold metallization ensure excellent device reliability.

100% lot traceability is standard.

Maximum Ratings

Parameter

Symbol

Value

Unit

Collector-Emitter Voltage

55

Vdc

Collector-Base Voltage

55

Vdc

Emitter-Base Voltage (collector open)

3.5

Vdc

Collector Current (continuous)

12

Adc

Total Device Dissipation at Tflange = 25°C

320

Watts

Above 25°C derate by

1.83

W/°C

Storage Temperature Range

–40 to +150

°C

Thermal Resistance (Tflange = 70°C)

0.547

°C/W

* This package not recommended for class A or CW operation. Two PTB 20245s recommended for CW operation.

9/28/98