21HB5-A
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BrandGeneral Electric
ClassBeam Power Pentode
BaseButton 12-Pin (E12-74)
Filament21V @ 0.45mA
Construction
Primary Typebeam power pentode
EnvelopeT-12
SectionsSingle
Filament / Heater
Warm-up Time11s
Absolute Maximum Ratings
Plate Voltage770 V
Plate Dissipation18 W
Grid 2 Voltage220 V
Grid 1 Voltage-55 V
Cathode Current230 mA
H-C Voltage200 V
Audio Performance
Key Features
- Compactron beam-power pentode
- TV horizontal-deflection amplifier applications
- Unilaterally interchangeable with the 21HB5
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Peak Plate Current point | 50V | - | - | - | 450mA |
| Typical Operation | 130V | 9000 | 9900 | 4.8 | 46mA |
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