7AU7

Name: 7AU7
Brand: GE

Small Signal Triode — Noval

GEData: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.

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Known Equivalents & Substitutes

9AU7

Similar Tubes (Not Drop-In Compatible)

6AU7

Sams lists as substitute — verify heater voltage compatibility (7AU7 is 7.0V vs 6AU7 at 6.3V)

6DE7

Brans lists as equivalent — similar dissimilar dual triode but 6.3V heater and different pinout

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)300V

Anode Dissipation (max)Anode Dissipation (max, per section)2.75W

Typical Operating

Anode Voltage (typical)Anode Voltage (typical)250V

Grid 1 Bias VoltageGrid 1 Bias Voltage-8.5V

Notes

7.0V heater — not compatible with standard 6.3V or 12.6V heater supplies without adjustment.
GE Essential Characteristics: Pa_max 2.75 W, Va_max 300 V, Va(typ) 250V, Vg=-8.5V, Ia=10.5mA, Rp=7700, gm=2200, mu=17.
Designed primarily for TV vertical oscillator/output circuits — the dissimilar sections are optimized for different functions in that application.
Brans Vademecum lists 6DE7 and 9AU7 as equivalents.
Sams lists 6AU7, 6AX7, PCCIB6, XCC, PY301, Z14 as substitutes — verify compatibility carefully.

Pin Layout — Noval

1Anode (section 1)

2Control Grid (section 1)

3Cathode (section 1)

Socket-Compatible Tubes ⚠ Not electrically compatible

5965 6N5P 6N6P E80CC

References