6N6P — Small Signal Triode, Noval | Tubeofile

6N6P

Small Signal Triode — Noval

Known Equivalents & Substitutes

No known equivalents. If you know of any, use the ⚑ Report Issue button above.

Similar Tubes (Not Drop-In Compatible)

E182CC

Similar Noval double triode but different ratings and heater current — not a strict drop-in

Similar characteristics but different Pa_max (5W vs 4W) and heater current (0.4A vs 0.75A) — verify heater supply before substituting

Electrical Specifications

Absolute Maximum

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

Anode Dissipation (max)Anode Dissipation (max, per section)4W

Cathode Current (max)Cathode Current (max, per section)50mA

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)100V

Max Grid ResistorMax Grid Resistor0.5MΩ

Typical Operating

Anode Voltage (typical)Anode Voltage120V

Grid 1 Bias VoltageGrid Bias Voltage-4.5V

Anode CurrentAnode Current (per section)30mA

Anode ResistanceAnode Resistance1,800Ω

TransconductanceTransconductance

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.75A

Notes

Cyrillic designation: 6Н6П. Also transliterated as 6H6P or 6H6Pi.
Pin 9 is an internal shield between the two triode sections (same pinout arrangement as E80CC).
Compared to ECC99: similar characteristics but Pa_max is 4 W per section (6N6P) vs 5 W (ECC99). Heater current also differs: 0.75 A (6N6P) vs 0.4 A (ECC99). Not a strict drop-in — verify heater supply capacity.
6N6PI (6Н6ПИ) is a ruggedized variant with higher heater current (0.9 A) and tighter parameter tolerances.
Soviet-specified operating point is Va = 120 V; Western audiophile usage often runs higher (up to 200–250 V) within the 300 V absolute limit and 4 W Pa_max per section.
Heater current (0.75 A) is significantly higher than most Noval double triodes (e.g. 12AU7 at 0.3 A) — verify heater supply capacity before substituting.

Pin Layout — Noval

1Anode (triode 1)

2Grid (triode 1)

3Cathode (triode 1)

Socket-Compatible Tubes ⚠ Not electrically compatible

References