Tube-number record
55
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BrandRCA
ClassDuplex-Diode Triode
Base6-pin
Filament2.5 V @ 1000 mA
Construction
Primary TypeMulti-section
EnvelopeST-12
SectionsTwo diodes and a triode
Filament / Heater
Heater NotesA.C. or D.C.
Absolute Maximum Ratings
Audio Performance
Key Features
- Combined detector
- Amplifier
- Automatic-volume-control
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit (Characteristics same as Type 85) | 250 V | 1100 | 7500 | 8.3 | 8 mA |
Application Notes
Standard six-contact socket may be installed in any position. Complete shielding of detector circuits is generally necessary to prevent coupling.
Datasheets
Datasheet: 55.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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