Ericsson PTB20228 Datasheet
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Description
PTB 20228
6.5 Watts, 1.62–1.66 GHz
RF Power Transistor
The 20228 is a class AB, NPN, common emitter RF power transistor
intended for 26 Vdc operation from 1.626 to 1.661 GHz. Rated at 6
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 Power Out and Efficiency vs. Power In
10
8
6
4
2
0
Output Power (Watts)
0.0 0.2 0.4 0.6 0.8 1.0 1.2
Input Power (Wa tts)
VCC = 26 V
I
= 40 mA
CQ
f = 1.661 GHz
80
64
48
32
16
Efficiency (%)
0
6.5 Watts, 1.62–1.66 GHz
Class AB Characteristics
40% Collector Efficiency at 6.5 Watts
Surface Mountable
Available in Tape and Reel
Gold Metallization
Silicon Nitride Passivated
20228
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 0.112 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
50 Vdc
50 Vdc
4.0 Vdc
1.0 Adc
19.7 Watts
–40 to +150 °C
8.9 °C/W
PTB 20228
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Electrical Characteristics (100% Tested)
Characteristic Conditions Symbol Min Typ Max Units
Breakdown Voltage C to E IB = 0 A, IC = 5 mA V
Breakdown Voltage C to E VBE = 0 V, IC = 5 mA V
Breakdown Voltage C to E IB = 0 A, IC = 5 mA, RBE = 22 Ω V
Breakdown Voltage E to B IC = 0 A, IE =5 mA V
DC Current Gain VCE = 5 V, IC = 250 mA h
Output Capacitance VCB = 26 V, Ie = 0, f = 1 MHz Cob 6.1 pF
(BR)CEO
(BR)CES
(BR)CER
(BR)EBO
FE
20 — — Volts
50 — — Volts
50 — — Volts
4 5 — Volts
20 40 — —
RF Specifications (100% Tested)
Characteristic Symbol Min Typ Max Units
Gain
(V
Gain Compression
(V
Collector Efficiency
(V
f = 1.626 & 1.661 GHz)
Load Mismatch Tolerance
(V
f = 1.661 GHz—all phase angles at frequency of test)
= 26 Vdc, P
CC
= 26 Vdc, ICQ = 40 mA, f = 1.661 GHz) P-1dB 6.5 — — Watts
CC
= 26 Vdc, P
CC
= 26 Vdc, P
CC
= 4 W, ICQ = 40 mA, f = 1.626 & 1.661 GHz) G
out
= 6.5 W, ICQ = 40 mA, η
out
= 6.5 W, ICQ = 40 mA, Ψ — — 5:1 —
out
pe
C
8.5 9.5 — dB
40 — — %
Impedance Data (data shown for fixed-tuned broadband circuit)
(V
= 26 Vdc, P
CC
Frequency Z Source Z Load
GHz R jX R jX
1.626 1.32 -2.29 7.02 21.19
1.640 1.27 -1.12 6.72 21.98
1.661 1.21 0.47 6.46 23.17
= 6.5 W, ICQ = 40 mA)
out
Z Source Z Load
Z0 = 50 Ω
2
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