Tube-number record
3B/101-B
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BrandStandard Valves
ClassTriode
Base5-pin
Filament4 V @ 1 mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated oxide coated, constant voltage type
Absolute Maximum Ratings
Plate Voltage200 V
Cathode Current25 mA
Audio Performance
Key Features
- Indirectly heated oxide coated
- Constant voltage type
- Metallised bulb option
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation at Vp 200V | 200 V | 5000 | 10000 | 50 | 6 mA |
| Operating Condition 1 | 100 V | — | — | — | 2.8 mA |
| Operating Condition 2 | 150 V | — | — | — | 4.5 mA |
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