3A/102-B
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BrandStandard Valves
ClassTriode
BaseSmall British 5 pin
Filament2.1V @ 1mA
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesConstant current type
Absolute Maximum Ratings
Plate Voltage190 V
Cathode Current1.5 mA
Audio Performance
Key Features
- Indirectly heated oxide coated cathode
- Anode connected to top cap type B
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Reference Constants | 130V | 500 | 60000 | 30 | 0.75mA |
| Typical Operation 1 | 130V | - | - | - | 1mA |
| Typical Operation 2 | 130V | - | - | - | 1.7mA |
| Typical Operation 3 | 160V | - | - | - | 0.9mA |
| Typical Operation 4 | 190V | - | - |
Application Notes
Small British 5 pin base. Nominal heater voltage 2.1V.
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