6Y6

Beam Tetrode — Octal

RCA

Known Equivalents & Substitutes

6Y6G6Y6GA6Y6GTCV515VT-168A

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)200V

Screen Voltage (max)Screen Voltage (max)200V

Anode Dissipation (max)Anode Dissipation (max)12.5W

Screen Dissipation (max)Screen Dissipation (max)1.75W

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)180V

Max Grid ResistorMax Grid Resistor (cathode bias)0.5MΩ

Typical Operating

Anode Voltage (typical)Anode Voltage (typical)200V

Screen Voltage (typical)Screen Voltage (typical)135V

Grid 1 Bias VoltageGrid 1 Bias Voltage-14V

Anode CurrentAnode Current66mA

Screen CurrentScreen Current

Output

Output PowerOutput Power6W

Load ImpedanceLoad Impedance2,600Ω

Capacitances

Grid-to-Plate CapacitanceGrid-to-Plate Capacitance0.66pF

Input CapacitanceInput Capacitance12pF

Output CapacitanceOutput Capacitance7.5pF

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current1.25A

Notes

Designed for low-voltage operation (200 V max on both anode and screen). Datasheet provides two sets of typical operating conditions: Va=135 V and Va=200 V.
Grid #1 circuit resistance: 0.1 MΩ max for fixed bias, 0.5 MΩ max for cathode (self) bias.
Grid #2 voltage rating depends on tube application: up to 200 V for screen-grid voltages up to 100 V; see Grid-No.2 Input Rating Chart for voltages between 100 and 200 V (per RCA data).
Pin 1 is no connection on glass-envelope types (6Y6G, 6Y6GA); on the original metal-envelope 6Y6 it connects to the shell.
Pin 8 connects to both the cathode and the internal beam-forming plates (which serve the suppressor function).
6Y6GA is the later straight-sided (GT-shape) glass version with identical electrical ratings to the 6Y6G.

Pin Layout — Octal

1No Connection (shell on metal type)

2Heater

3Anode (Plate)

Socket-Compatible Tubes ⚠ Not electrically compatible

References