Tube-number record
6AT8A
0 archive entries
BrandTung-Sol
ClassTriode Pentode
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypeMulti-section
EnvelopeGlass Miniature Button
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesControlled heater warm-up time for series strings
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation2.3 W
Grid 2 Voltage275 V
H-C Voltage200 V
Audio Performance
Key Features
- Common Cathode
- Medium-mu triode
- Sharp cut-off pentode
- Series heater string controlled
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 125 V | 5500 | 300000 | — | 9 mA |
| Triode | 125 V | 6500 | 6000 | 40 | 12 mA |
Application Notes
Designed primarily for use in 600 mA series heater operated television receivers utilizing an intermediate frequency in the order of 40MC.
0 results