Tube-number record
5AS8
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BrandTung-Sol
ClassDiode Pentode
BaseNoval (B9A)
Filament4.7 V @ 600 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialGlass
Sections2
Filament / Heater
MaterialCoated Unipotential Cathode
Warm-up Time11s
Heater NotesDesign center value; Limits: 600 +/- 40 mA
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.5 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Miniature Type
- High perveance diode
- Sharp-cutoff pentode
- 9 Pin Construction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 200 V | 6200 | 300000 | — | 9.5 mA |
Application Notes
Intended for diversified applications in television and radio receivers.
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