Ericsson PTB20249 Datasheet

Description

PTB 20249

2.5 Watts, 1465–1513 MHz

Cellular Radio RF Power Transistor

The 20249 is a class AB, NPN, common emitter RF power transistor
intended for 26 Vdc operation from 1465 to 1513 MHz. Rated at 2.5
watts minimum output power, it may be used for both CW and PEP
applications. Ion implantation, nitride surface passivation and gold
metallization are used to ensure excellent device reliability . 100% lot
traceability is standard.

Typical Output Pow er vs. Input Pow er

5

4

3

2

1

Output Power (Watts)

0

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35

Input Power (Watts)

VCC = 26 V
I

= 25 mA

CQ

f = 1513 MHz

 2.5 Watts, 26 Vdc
 Class AB Characteristics
 Surface Mountable
 Available in Tape and Reel
 Gold Metallization
 Silicon Nitride Passivated

20249

LOT CODE

Package 20227

Maximum Ratings

Parameter Symbol Value Unit

Collector-Emitter Voltage V
Collector-Base Voltage V
Emitter-Base Voltage (collector open) V
Collector Current (continuous) I
Total Device Dissipation at T

Above 25°C derate by 0.057 W/°C
Storage Temperature Range T

Thermal Resistance (T

9/28/98

flange

= 25°C P

flange

= 70°C) R

1

CER
CBO
EBO

C

D

STG

θJC

55 Vdc
55 Vdc

4 Vdc

0.5 Adc
10 Watts

–40 to +150 °C

17.5 °C/W

PTB 20249

Electrical Characteristics (100% Tested)

Characteristic Conditions Symbol Min Typ Max Units

Breakdown Voltage C to E IB = 0 A, IC = 5 mA, RBE = 22 Ω V
Breakdown Voltage C to E VBE = 0 V, IC = 5 mA V
Breakdown Voltage E to B IC = 0 A, IE = 5 mA V
DC Current Gain VCE = 5 V, IC = 250 mA h

(BR)CER
(BR)CES
(BR)EBO

FE

55 — — Volts
55 — — Volts

4 5 — Volts

20 — — —

RF Specifications (100% Tested)

Characteristic Symbol Min Typ Max Units

Gain

(V

Power Output at 1 dB Compression

(V

Load Mismatch Tolerance

(V
f = 1513 MHz—all phase angles at frequency of test)

= 26 Vdc, P

CC

= 26 Vdc, ICQ = 25 mA, f = 1513 MHz) P-1dB 2.5 3.5 — Watts

CC

= 26 Vdc, P

CC

= 1 W, ICQ = 25 mA, f = 1513 MHz) G

out

= 5 W, ICQ = 25 mA, Ψ — — 5:1 —

out

pe

9.5 11.5 — dB

Impedance Data (data shown for fixed-tuned broadband circuit)

(V

= 26 Vdc, P

CC

= 2.5 W, ICQ = 25 mA)

out

Z Source Z Load

Frequency Z Source Z Load

MHz R jX R jX

1465 17.90 12.50 10.50 25.40
1489 17.60 12.90 10.40 26.10
1513 17.30 13.40 10.40 26.70

Z0 = 50 Ω

/19/98

2