6K6

Power Pentode — Octal

RCA

Known Equivalents & Substitutes

6K6-GT6K6-G41CV1938CV1940VT152VT152A7B5EVT52VT102

Electrical Specifications

Section 1 — Pentode

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)315V

Screen Voltage (max)Screen Voltage (max)285V

Anode Dissipation (max)Anode Dissipation (max)8.5W

Screen Dissipation (max)Screen Dissipation (max)2.8W

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

Section 2 — Triode Strapped

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)315V

Anode Dissipation (max)Anode Dissipation (max)7W

Cathode Current (max)Cathode Current (max)25mA

Max Grid ResistorMax Grid Resistor (cathode bias)2.2MΩ

Typical Operating

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.4A

Notes

Electrically identical to type 41 (pre-octal base version).
Pin 1 (and pin 6) are omitted on 6-pin base variants (JETEC B6-81, B6-84).
Grid-No.1 circuit resistance: 0.1 MΩ max for fixed-bias, 0.5 MΩ max for cathode-bias (pentode); 2.2 MΩ max for cathode-bias in triode/vertical deflection service.
Triode-connected maximum plate dissipation is reduced to 7.0 W (vs 8.5 W in pentode mode).
7B5E is a Loctal-base version released in 1950.

Pin Layout — Octal

1No Connection

2Heater

3Anode (Plate)

4

Socket-Compatible Tubes ⚠ Not electrically compatible

References