6922

Small Signal Triode — Noval

Data: 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

E88CCCCa ECC88 6DJ86N23P6N23P-EV7308E188CCCV2492CV5358ECC804

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)220V

Anode Dissipation (max)Anode Dissipation (max per section)1.5W

Cathode Current (max)Cathode Current (max average)20mA

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)150V

Notes

The 6922/E88CC is the special-quality long-life version of the ECC88/6DJ8. Tighter parameter tolerances and guaranteed 10,000-hour life vs standard ECC88.
CCa is the Telefunken premium-grade designation for the same tube (E88CC/6922/CCa).
7308/E188CC is an even higher reliability grade with tighter specs — can substitute for 6922 but not vice versa.
ECC88/6DJ8 is the standard commercial version — electrically identical but with wider tolerances and shorter rated life. Can substitute for 6922 in non-critical applications.
Fixed grid bias is only permitted when Ia <= 5 mA. For normal operating currents, cathode bias (self-bias) is required.
Max Pa is 1.5 W per section, but may be increased to 1.8 W per section provided total dissipation of both sections does not exceed 2 W.
This is a low-voltage tube — typical operating points are Va = 90-150 V, much lower than conventional dual triodes like 12AX7 or 12AU7.
Pin 9 is an internal shield between the two triode sections.

Pin Layout — Noval

1Anode (triode 2)

2Grid (triode 2)

3Cathode (triode 2)

Socket-Compatible Tubes ⚠ Not electrically compatible

12AT7 12AU7 12AV7 12AX7 12AY7 12AZ7 12BH7 12CG7 5751 5965 6/30L2 6533 6AU7 6BK7 6BQ7A

References