Tube-number record
TRIPLE DIODE TRIODE
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TRIPLE DIODE TRIODE is a tube type in the TubeDatabase archive (class: AM/FM Receiver Tube). Recorded specifications: brand TUNG-SOL, year 1963, construction Display / CRT, base Intermediate Shell 8 Pin Octal B8-6 or Short Intermediate Shell B8-58, socket Octal, maximum plate voltage 300 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassAM/FM Receiver Tube
BaseOctal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJEDEC 9-23 OR 9-48
Base MaterialIntermediate Shell 8 Pin Octal B8-6 or Short Intermediate Shell B8-58
SectionsHigh-mu triode and three separate diodes
Filament / Heater
Heater NotesLimits of applied voltage: 6.3 +/- 0.6 Volts
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100 V | 900 | 110000 | 100 | 0.4 mA |
| Class A1 Amplifier | 250 V | 1100 | 91000 | 100 | 0.9 mA |
Application Notes
The 6S8GT combines a high-mu triode and three separate diodes in one envelope. One diode has a separate cathode permitting use as a balanced discriminator. Ideal for AM/FM receivers to detect both types of signal without additional switching.
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