3C/150-A
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BrandStandard Telephones and Cables
ClassHigh Frequency Triode
BaseLarge 4-pin bayonet
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage2500 V
Plate Dissipation150 W
Cathode Current200 mA
Audio Performance
Key Features
- Thoriated tungsten filament
- Constant voltage type
- Large 4-pin bayonet base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Constants | 1000V | 4750 | 3800 | 18 | 150mA |
| Class B Audio Amplifier (2-valve) | 2000V | - | - | - | 190mA |
| Class B Audio Amplifier (2-valve) | 2500V | - | - | - | 160mA |
| Class B RF Power Amplifier | 2500V | - | - | - | 90mA |
| Class C Telephony (Anode Modulated) | 2000V | - |
Application Notes
High frequency triode suitable for Class B audio and RF power amplification up to 60 Mc with reduced ratings.
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