Tube-number record
3B25
0 archive entries
3B25 is a tube type in the TubeDatabase archive (class: Rectifier). Recorded specifications: brand RCA, year 1957, construction Rectifier, base Medium-Shell Small 4-Pin with Bayonet, socket 4-pin, and maximum plate voltage 4500 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassRectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeT16
Base MaterialMedium-Shell Small 4-Pin with Bayonet
Sections1
Filament / Heater
Warm-up Time15s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Half-Wave Single-Phase In-Phase Operation | 4500 V | — | — | — | 500 mA |
| Full-Wave Single-Phase In-Phase Operation | 1500 V | — | — | — | 1000 mA |
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