Tube-number record
6AR7-GT
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6AR7-GT is a tube type in the TubeDatabase archive (class: Duo-Diode Pentode). Recorded specifications: construction Pentode, socket Octal, maximum plate voltage 300 V, and maximum plate dissipation 2.25 W. The archive does not yet hold a photographed example of this type.
ClassDuo-Diode Pentode
BaseOctal
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
EnvelopeT-9
SectionsDuo-Diode Pentode
Filament / Heater
Heater Notesa.c. or d.c.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.25 W
Grid 2 Voltage125 V
H-C Voltage90 V
Audio Performance
Key Features
- Remote Cut-off Type
- Internal Shields
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 2500 | 1000000 | — | 7 mA |
Application Notes
The two diode plates are placed around a cathode, the sleeve of which is common to the pentode unit. Each diode plate has its own base pin. The minimum diode current per plate with an applied d.c. voltage of 10 volts is 0.8 mA.
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