Tube-number record
1AR5/185-SF
0 archive entries
1AR5/185-SF is a tube type in the TubeDatabase archive (class: Diode Pentode). Recorded specifications: brand The Federation of Japan Electric Communication Industrial Associations, year 1956, construction Multi-section, base Miniature Button, socket 7-pin (non-miniature), and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.
BrandThe Federation of Japan Electric Communication Industrial Associations
ClassDiode Pentode
Base7-pin (non-miniature)
Construction
Primary TypeMulti-section
EnvelopeT-5 1/2
Base MaterialMiniature Button
Sections2
Filament / Heater
Materialcoated
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage90 V
Cathode Current2.5 mA
Audio Performance
Key Features
- Coated filament
- Miniature button base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 67.5 V | 500 | 800000 | — | 1.9 mA |
Application Notes
Designed for use as a diode-pentode in battery-operated receivers.
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