ECC802S

Small Signal Triode — Noval

Telefunken

Known Equivalents & Substitutes

ECC8212AU7E82CC61895814ACV4003B329CV4016

Similar Tubes (Not Drop-In Compatible)

Russian substitute per Kainel'son & Larionov (1981). Different base (Noval B9A but Russian pinout convention) — verify pin compatibility before substitution

6N5P

Russian substitute per Kainel'son & Larionov (1981). Different base — verify pin compatibility before substitution

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Max Anode Voltage330V

Anode Dissipation (max)Max Anode Dissipation3W

Cathode Current (max)Max Cathode Current22mA

Heater-to-Cathode Voltage (max)Max Heater-Cathode Voltage100V

Max Grid Resistor

Notes

Special quality (S-suffix) tube: tighter manufacturing tolerances, longer burn-in, and more critical testing than standard ECC82.
Guaranteed life of 10,000 hours (averaged over 100 tubes), provided heater voltage is held within +/-5% of nominal.
Vibration and shock proof: withstands 2.5g at 50 Hz for lengthy periods and 500g momentary shocks.
Cathode free from interface: the special cathode will not develop interface resistance even when operated without plate current over lengthy periods.
Max grid resistor depends on bias method: 1 MΩ for cathode (automatic) bias, 0.5 MΩ for fixed bias.
Heater cycling rated for at least 2,000 on/off cycles (1 min on, 1 min off) at Uf=7.5V, Uf/k(k neg)=135V.
Originally manufactured by Telefunken and Tesla. JJ Electronic currently produces the ECC802S with identical electrical ratings.

Pin Layout — Noval

1Anode 2 (Triode section 2)

2Control Grid 2 (Triode section 2)

3

Socket-Compatible Tubes ⚠ Not electrically compatible

12AX7 12AY7 12AZ7 12BH7 5751 A2900

References