2N4428
2N4428 is NPN SILICON RF POWER TRANSISTOR manufactured by Motorola Semiconductor.
2N4428 (SILICON)
NPN SILICON RF POWER TRANSISTOR
- .. designed primarily for use in large signal VHF and UHF amplifier output stages in military and industrial munications applications.
- High Power Output Pout = 0.75 Watt with 10 d B Gain @f=500 MHz
- High Current- Gain-Bandwidth Product f T = 1000 MHz (Typ) @IC = 50 m Adc
- Multiple Emitter Construction for Excellent High Frequency Performance
- MAXIMUM RATINGS Rating
Coliector- Emittar Voltage Coliector- Base Voltage Emitter- Base Voltage Collector Current
- Continuous Base Current
- Continuous Total Device Oissipation@TC=250C
Derate above 25°C Operating and Storage Junction
Temperature Range
-Indicatel JEOEC Registered Data.
Symbal VCEO VCB VEB
IC IB
Po
TJ,Tstg
Value 35 55 3.5 425 150 3.5 20
-65 to +200
Unit Vdc Vdc Vdc m Ade m Ade Watts m W/o C °c
FIGURE 1
- 500 MHz TEST CIRCUIT
NPN SILICON RF POWER
TRANSISTOR ff
~:~~~DIA~
0.315 DIA 0.335
0.240 0.260
O'oosi 0.125
Il
0.016 D1A 0.019
0.5 MIN
~
0.IS0 0210
VCE"'28VIMU
Adjust HI for Ic-70m Awith no RFSignal Appl1ed
+Vcc
Ll
- 1 TURN NO. 20 T.C.WIRE 1/4" DIA TAPPED AT CENTER
2-"-818
Pin...
