This is one of the transistor types.
Part Number: C1971, 2SC1971
Function:
Package: TO-220 Pin type
Manufacturer: Mitsubishi
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Description
The C1971 is a silicon NPN epitaxial planar type transistor designed for RF power amplifer on VHF band mobile radio applications.
Features
1. High power gain : Gpe >= 10dB
2. Emitter ballasted contruction, gold metallization for high reliability and good performances
3. Ability of withstanding more than 20:1 load VSWR when operated at Vcc = 15.2V, Po=6W, f = 175Mhz
Pinout
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 35 V
2. Collector to Emitter Voltage: Vceo = 17 V
3. Emitter to Base Voltage: Vebo = 4 V
4. Collector Current: Ic = 2 A
5. Collector Dissipation : Pc = 1.5 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
Applications:
1. 4 to 5 watts output power amplifiers in VHF band applications