6BY6

Hexode — B7G

GE

Known Equivalents & Substitutes

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

Similar Tubes (Not Drop-In Compatible)

Similar heptode on B7G base but designed as pentagrid converter, not gated amp

Similar dual-control heptode on B7G base — same gated amplifier application

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Max Plate Voltage300V

Screen Voltage (max)Max Screen Voltage150V

Anode Dissipation (max)Max Plate Dissipation2W

Typical Operating

Anode Voltage (typical)Plate Voltage10V

Screen Voltage (typical)Screen Voltage25V

Grid 1 Bias VoltageGrid Voltage-2.5V

Anode ResistancePlate Resistance1,900Ω

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.3A

Notes

GE Essential Characteristics: Dual-Control Heptode, B7G (7CH) base. Va=10V, Vg2=25V, Vg=-2.5V, Pa_max=2W, Va_max=300V, Vg2_max=150V, Rp=1900Ω.
Sams lists 6H31, EH90 as substitutes.
Can function as a logic switching device: both control grids at 0V allow conduction, negative voltage on either grid blocks operation.
Muiderkring Handbook page 152 lists this type.

Pin Layout — B7G

1Signal Grid (g1)

2Cathode,Suppressor Grid (g5)

3Heater

4

Socket-Compatible Tubes ⚠ Not electrically compatible

References