Tube-number record
21HB5-A
0 archive entries
21HB5-A is a tube type in the TubeDatabase archive (class: Beam Power Pentode). Recorded specifications: brand General Electric, construction Beam tetrode / beam power, socket Compactron, maximum plate voltage 770 V, and maximum plate dissipation 18 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassBeam Power Pentode
BaseCompactron
Filament21 V @ 0.45 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT-12
SectionsSingle
Filament / Heater
Warm-up Time11s
Absolute Maximum Ratings
Plate Voltage770 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Peak Plate Current point | 50 V | — | — | — | 450 mA |
| Typical Operation | 130 V | 9000 | 9900 | 4.8 | 46 mA |
0 results