Ericsson PTB20248 Datasheet

Description

PTB 20248

0.7 Watts, 1465–1513 MHz

Cellular Radio RF Power Transistor

The 20248 is a class A, NPN, common emitter RF power transistor
intended for 26 Vdc operation from 1465 to 1513 MHz. Rated at 0.7
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

1.2

1

0.8

0.6

0.4

0.2

Output Power (Watts)

0

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07

Input Power (Watts)

VCC = 26 V
I

= 0.120 A

CQ

f = 1513 MHz

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

20248

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 0.031 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

5.4 Watts

–40 to +150 °C

32.3 °C/W

PTB 20248

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 = 200 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
—all phase angles at frequency of test)

= 26 Vdc, P

CC

= 26 Vdc, ICQ = 120 mA, f = 1513 MHz) P-1dB 0.7 0.9 — Watts

CC

= 26 Vdc, P

CC

= 0.2 W, ICQ = 120 mA, f = 1513 MHz) G

out

= 0.7 W, ICQ = 120 mA, f = 1513 MHz Ψ — — 5:1 —

out

pe

10 12 — dB

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

(V

= 26 Vdc, P

CC

= 0.7 W, ICQ = 120 mA)

out

Z Source Z Load

Frequency Z Source Z Load

MHz R jX R jX

1465 6.50 6.10 10.60 37.30
1489 5.70 7.60 10.70 38.90
1513 5.00 8.90 10.90 40.50

Z0 = 50 Ω

/19/98

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