6GT5

Beam Tetrode — Novar

RCA

Known Equivalents & Substitutes

6GT5A

Similar Tubes (Not Drop-In Compatible)

6JE6

Similar Novar horizontal deflection beam tetrode — different operating points

6LQ6

Similar Novar horizontal deflection beam tetrode — different ratings

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Plate Supply Voltage (max)770V

Screen Voltage (max)Screen Voltage (max)220V

Anode Dissipation (max)Anode Dissipation (max)17.5W

Screen Dissipation (max)Screen Dissipation (max)3.5W

Cathode Current (max)Cathode Current (peak)550mA

Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max)200V

Capacitances

Grid-to-Plate CapacitanceGrid-to-Plate Capacitance0.26pF

Grid-to-Cathode CapacitanceInput Capacitance15pF

Anode-to-Cathode CapacitanceOutput Capacitance6.5pF

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current1.2A

Notes

Maximum ratings for horizontal deflection service: plate supply 770V, peak positive-pulse plate voltage 6500V, peak negative-pulse plate voltage 1500V, screen voltage 220V, plate dissipation 17.5W.
Triode-strapped (g2 tied to plate) Class A1 at Va=250V, Vg2=150V, Vg1=-22.5V: Ia=70mA, Ig2=2.1mA, Rp=15kΩ, Gm=7100 umhos, mu=4.4.
At Va=60V, Vg2=150V in triode connection: Ia=390mA, Ig2=32mA. This demonstrates the very high perveance at low plate voltages.
The Novar base is a 9-pin design similar in concept to Compactron but with a different physical form factor.

Pin Layout — Novar

1Grid 2 (Screen)

2Grid 1 (Control)

3Cathode

References