Ericsson PTB20175 Datasheet

e

Description

PTB 20175

55 Watts, 1.9–2.0 GHz

Cellular Radio RF Power Transistor

The 20175 is a class AB, NPN common emitter RF power transistor
intended for 26 Vdc operation from 1.9 to 2.0 GHz. It is rated at 55
watts minimum output power and 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 Power

70

60

50

40

30

Output Power (Watts)

20

10

2468101214

Input Power (Wa tts)

VCC = 26 V
I

= 0.150 A

CQ

f = 2 GHz

Maximum Ratings

 55 Watts, 1.9–2.0 GHz
 Class AB Characteristics
 40% Collector Efficiency at 55 Watts
 Gold Metallization
 Silicon Nitride Passivated

20175

LOT CODE

Package 20223

Parameter Symbol Value Unit

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

Above 25°C derate by 1.33 W/°C
Storage Temperature Range Tstg –40 to +150 °C

Thermal Resistance (T

9/28/98

flange

= 25° C P

flange

= 70° C) R

1

CER
CES
EBO

C

D

θJC

55 Vdc
55 Vdc

4 Vdc
8 Adc

233 W

.75 °C/W

PTB 20175

e

Electrical Characteristics (100% Tested)

Characteristics Conditions Symbol Min Typ Max Units

Breakdown Voltage C to E Ic = 60 mA, RB = 27 Ω V
Breakdown Voltage C to E VBE = 0 V, IC = 60 mA V
Breakdown Voltage E to B IC = 0 V, IE = 25 mA V
DC Current Gain VCE = 5 V, IC = 300 mA H

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

fe

55 — — Volts
55 — — Volts

4.0 5 — Volts
—50——

RF Specifications (100% Tested)

Characteristics Symbol Min Typ Max Units

Gain

(V

= 26 Vdc, P

CC

f = 2.0 GHz)

Collector Efficiency

(V

= 26 Vdc, P

CC

f = 2.0 GHz)

Load Mismatch Tolerance

(V

= 26 Vdc, P

CC

f = 2.0 GHz—All Phase Angles at Frequency of Test)

= 55 W, ICQ = 150 mA, G

out

= 55 W, ICQ = 150 mA, η

out

= 55 W(PEP), ICQ = 150 mA, Ψ — — 5:1 —

out

pe

C

7.0 7.6 — dB

37 47 — %

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

(V

= 26 Vdc, P

CC

= 55 W, ICQ = 150 mA)

out

Z Source Z Load

Frequency Z Source Z Load

GHz R jX R jX

1.90 3.26 -2.0 2.30 -1.9

1.95 3.26 -1.7 2.25 -2.2

2.00 3.26 -1.4 2.20 -2.5
Z0 = 50 Ω

/19/98

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