6AS7G — Power Triode, Octal | Tubeofile

6AS7G

Power Triode — Octal

Tung-Sol

Known Equivalents & Substitutes

6AS76AS7GA60806080WA6080WB65206N13S6N13P 6H13CCV2523CV2623CV2984CV10322CK6080E6080ECC230A1834A4475EI834RK60807802

Similar Tubes (Not Drop-In Compatible)

Same Octal pinout but ~double the mu (5.4 vs 2.0) and gm (15.5 vs 7.0 mA/V) — changes bias points, not a drop-in

6336

Successor design with higher ratings (Va_max 400V, Pa_max 30W) — not a drop-in due to different maximum ratings

6533

Higher-current variant listed by RCA as similar — not a drop-in

Soviet twin triode with similar characteristics but lower mu (~1.6) — not a pin-for-pin drop-in

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)275V

Anode Dissipation (max)Anode Dissipation (max, per plate)14W

Cathode Current (max)Cathode Current (max, per plate)125mA

Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max)300V

Notes

When multiple tube sections are paralleled for higher current, it is recommended not to exceed 100 mA per plate (Tung-Sol).
Grid circuit resistance limit differs by bias method: 1.0 MΩ for cathode bias, 0.1 MΩ for fixed bias or combination (Tung-Sol).
A 30-second cathode warmup time is recommended before plate voltage is applied, especially in circuits where the amplifier tube plate resistor is returned to the plate side of the passing tube.
A grid resistor of 1000 Ω per section is recommended to prevent parasitic oscillation while limiting gas grid current (Tung-Sol).
6080 is the industrial/ruggedized version with tighter parameter tolerances but identical ratings and pinout.
6N13S (6Н13С) is the Soviet equivalent; electrically compatible but may have slightly different capacitance values.
Brans Vademecum lists CV2623 as the direct equivalent.

Pin Layout — Octal

1Grid (triode 2)

2Anode (triode 2)

3Cathode (triode 2)

Socket-Compatible Tubes ⚠ Not electrically compatible

References