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MRF422 Datasheet, PDF (2/4 Pages) Motorola, Inc – RF POWER TRANSISTORS NPN SILICON | |||
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ELECTRICAL CHARACTERISTICS â continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
ON CHARACTERISTICS
DC Current Gain
(IC = 5.0 Adc, VCE = 5.0 Vdc)
hFE
15
30
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 28 Vdc, IE = 0, f = 1.0 MHz)
Cob
â
420
FUNCTIONAL TESTS
CommonâEmitter Amplifier Power Gain
(VCC = 28 Vdc, Pout = 150 W (PEP), IC(max) = 6.7 Adc,
ICQ = 150 mAdc, f = 30, 30.001 MHz)
Collector Efficiency
(VCC = 28 Vdc, Pout = 150 W (PEP), IC(max) = 6.7 Adc,
ICQ = 150 mAdc, f = 30, 30.001 MHz)
Intermodulation Distortion (1)
(VCE = 28 Vdc, Pout = 150 W (PEP), IC = 6.7 Adc,
ICQ = 150 mAdc, f = 30, 30.001 MHz)
GPE
10
13
η
â
45
IMD
â
â33
Output Power
(VCE = 28 Vdc, f = 30 MHz)
Pout
150
â
NOTE:
1. To MilâStdâ1311 Version A, Test Method 2204, Two Tone, Reference each Tone.
Max
Unit
120
â
â
pF
â
dB
â
%
â30
dB
â
Watts
(PEP)
R1
+
BIAS
CR1
C6
-
C2
C7
L2
L1
C1
R2
L5
C8
C9
L3
D.U.T.
L4
C4
C3
C10
C11
+
28 Vdc
-
C5
C1, C2, C3, C5 â 170ÄâÄ680 pF, ARCO 469
C4 â 80ÄâÄ480 pF, ARCO 466
C6, C8, C11 â ERIE 0.1 µF, 100 V
C7 â MALLORY 500 µF, 15 V Electrolytic
C9 â UNDERWOOD 1000 pF, 350 V
C10 â 10 µF, 50 V Electrolytic
R1 â 10 â¦, 25 Watt Wire Wound
R2 â 10 â¦, 1.0 Watt Carbon
CR1 â 1N4997
L1 â 3 Turns, #16 Wire, 5/16â³ I.D., 5/16â³ Long
L2 â 10 µH Molded Choke
L3 â 12 Turns, #16 Enameled Wire, Close Wound, 1/4â³ Dia.
L4 â 5 Turns, 1/8â³ Copper Tubing
L5 â 10 Ferrite Beads â FERROXCUBE #56â590â65/3B
Figure 1. 30 MHz Test Circuit Schematic
REV 6
2
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