R.A.P.992304-CHIU
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WRITTEN INTO SPECIFICATIONS, OR USED IN CRITICAL APPLICATIONS, THAT THE PERFORMANCE CHARACTERISTICS BE VERIFIED BY CONTACTING THE FACTORY.
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1920CD35
35 Watts, 25 Volts, Class AB
Personal 1930 – 1990 MHz
GENERAL DESCRIPTION
The 1920CD35 is a COMMON EMITTER transistor capable of providing 35
Watts of Class AB, RF output power over the band 1930-1990 MHz. This
transistor is specifically designed for PERSONAL COMMUNICATIONS
BASE STATION amplifier applications. It includes Input prematching and
utilizes Gold metalization and HIGH VALUE EMITTER ballasting to provide
high reliability and supreme ruggedness.
CASE OUTLINE
55AR Style 2
COMMON EMITTER
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25°
°°
°C 120 Watts
Maximum Voltage and Current
Collector to Emitter Voltage (BVCES) 55 V
Collector to Emitter Voltage (L CCEO) 27 V
Collector to Emitter Voltage (BVCER) 50 V
Emitter to Base Voltage (B VEBO) 3.5 V
Collector Current (Ic) 14.0 Amps
Maximu m T e mpe r a t u r e s
Storage Temperature -65 to +200 °C
Operating Junction Temperature +230 °C
ELECTRICAL CHARACTERISTICS @ 2 5°
°°
°C
SYMB OL CHARACTERISTICS TEST CONDITIONS MIN TYP MAX UNITS
Pout Power Out F = 1990 MHz 35 W
Pin Power Input VCC = 25 Volts 6.0 W
PgPower Gain Icq = 250 mAmps 8.0 8.5 dB
ηcCollector Efficiency As above 43 %
VSWR1Load Mismatch Tolerance 3:1
FUNCTIONAL CHARACTERISTICS @ 25°
°°
°C
BVCES Collector to Emitter Breakdown Ie = 50 mA 55 V
LVCEO Collector to Emitter Breakdown Ic = 50 mA 25 V
BVCER Collector to Emitter Breakdown Ic = 50mA, Re = 10 Ohms 50 V
BVEBO Emitter to Base Breakdo wn Ie = 10mA 3.5 V
ICES Collector Leakage Current Vce = 27 V 10 mA
hFE DC – Current Gain Vce = 5V, Ic = 1A, 20 100
COB Output Capacitance F = 1 MHz, Vcb = 28V 28 PF
θjc2Thermal Resista nce Tc = 25oC1.6
°C/W
Initial Issue April 1999
1920CD35
Zin ZCL
Frequency
Rjx Rjx
1900 4.19 5.14 4.7 -8.28
1930 4.22 4.99 4.56 -8.24
1960 4.17 4.62 4.05 -7.69
1990 3.06 4.23 4.39 -7.38
2000 2.74 4.83 4.42 -7.34
INPUT IMPEDANCE
1.00
2.00
3.00
4.00
5.00
6.00
1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
FREQUENCY (MHZ)
OHMS
RIN
xIN
Vcc=25 V Icq=250 mA Pout=35 W CW
Collector Efficiency vs Power out CDMA
0
5
10
15
20
25
30
35
20 22 24 26 28 30 32 34 36 38 40 42
Power Out (dBm) CDMA ave
Efficiency %
Eff CDMA
F=1990 mHz Vcc=25
V Icq=250 mA
