This post explains for the NPN Transistor.
The Part Number is C2694, 2SC2694.
The function of this semiconductor is RF Power Transistor.
Manufacturer: Mitsubishi Electric Semiconductor
Preview images :
The C2694 is a silicon NPN epitaxial planar type transistor designed for RF power amplifiers in VHF band mobile radio applications.
1. High power gain
2. Emitter ballasted contruction and gold metallization for high reliability and good performances.
3. Low thermal resistance ceramic package with flange.
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 = 20 A
5. Collector Dissipation : Pc = 5.5 W
6. Junction Temperature: Tj = 175°C
7. Storage Temperature: Tsg = -55 ~ +175°C
1. 50 to 60 watts output power amlifiers in VHF band mobile radio applications. […]