6CG6

Small Signal Pentode — B7G

Known Equivalents & Substitutes

Similar Tubes (Not Drop-In Compatible)

26CG6

Same tube structure but 26.5V heater for series-string operation — not interchangeable

Similar small-signal pentode on B7G base — different operating points

Electrical Specifications

Absolute Maximum

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

Screen Voltage (max)Screen Voltage (max)150V

Anode Dissipation (max)Anode Dissipation (max)4W

Typical Operating

Anode Voltage (typical)Anode Voltage (typical)250V

Screen Voltage (typical)Screen Voltage (typical)150V

Grid 1 Bias VoltageGrid Voltage-8V

Anode CurrentAnode Current9mA

Screen CurrentScreen Current

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.3A

Notes

The 6CG6 is a general-purpose sharp-cutoff pentode. The 26CG6 is the 26.5V heater variant for series-string TV receivers.
Substitution guides list 6BD6 as an equivalent and 6BA6 as a close substitute.
Limited independent datasheet availability.

Pin Layout — B7G

1Control Grid (g1)

2Cathode,Suppressor Grid (g3)

3Heater

4

Socket-Compatible Tubes ⚠ Not electrically compatible

References