Power - Triode (over 1000V 100W) ·Triode
3C-150A
Standard Valves 3C/150-A directly heated thoriated-tungsten RF power triode for broadcast transmitters and modulators, rated 2500 V anode, 150 W dissipation and 10 V 3.4 A filament.
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 4
- Nominal heater
- 10 V / 3.4 A
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 4
- Nominal heater voltage
- 10 V
- Nominal heater current
- 3.4 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
- Plate resistance
- 3800 Ω
- Transconductance
- 0.00475 S
- Amplification factor
- 18
- Max plate voltage
- 2500 V
- Max plate dissipation
- 150 W
Standard Valves 3C/150-A directly heated thoriated-tungsten RF triode. At Va 1000 V and Ia 150 mA: mu 18, rp 3800 Ω, gm 0.00475 A/V. Maximum DC anode voltage 2500 V, anode current 200 mA, anode dissipation 150 W, valid through 20 MHz; at 60 MHz anode voltage limit 2000 V. Grid-anode capacitance 7.3 pF, grid-filament 8.6 pF, anode-filament 1.1 pF. Class B balanced AF pair 500–600 W, Class B RF telephony ~80 W per tube, Class C modulated RF 250–270 W, Class C unmodulated RF 300–380 W. Printed maximum RF grid current '10 A' requires separate confirmation due to possible source ambiguity.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.