Tube-number record
6225
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6225 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Sonotone, construction Pentode, socket Subminiature, maximum plate voltage 165 V, and maximum plate dissipation 1.1 W. The archive does not yet hold a photographed example of this type.
BrandSonotone
ClassPentode
BaseSubminiature
Filament6.3 V @ 175 mA
Construction
Primary TypePentode
EnvelopeT-3
SectionsSingle
Filament / Heater
Heater NotesMaximum Heater-Cathode Voltage: 200V
Absolute Maximum Ratings
Plate Voltage165 V
Plate Dissipation1.1 W
Grid 2 Voltage155 V
Grid 1 Voltage-55 V
Cathode Current16.5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Reliable performance under extreme vibration and shock
- Semi-remote cut-off
- Close tolerance on filament current
- Resistance to vibration frequencies up to 2000 cycles
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Operation | 100 V | 4500 | 175000 | — | 7.2 mA |
Application Notes
Designed for applications where reliable performance under conditions of extreme vibration and shock is essential.
Datasheets
Datasheet: 6225.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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