6BC5

Sharp Cutoff Pentode — B7G

RCA

Known Equivalents & Substitutes

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

Similar Tubes (Not Drop-In Compatible)

Similar sharp-cutoff pentode on B7G base — slightly lower gm, Philips notes partial replacement

6AU6

Similar sharp-cutoff pentode on B7G base — Brans lists in same group (Table Va)

Same sharp-cutoff pentode structure on B7G base — different Pa_max ratings (3W vs 2W)

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Max Plate Voltage300V

Screen Voltage (max)Max Screen Voltage150V

Anode Dissipation (max)Max Plate Dissipation3W

Typical Operating

Anode Voltage (typical)Plate Voltage250V

Screen Voltage (typical)Screen Voltage150V

Grid 1 Bias VoltageGrid Voltage-8V

Anode CurrentPlate Current8mA

Anode ResistancePlate Resistance

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.3A

Notes

GE Essential Characteristics: Va=250V, Vg2=150V, Vg=-8V, Ia=8mA, gm=5700 umhos, Rp=800kΩ, Pa_max=3W, Va_max=300V, Vg2_max=150V.
Radiomuseum confirms 6CE5 is electrically identical to 6BC5.
Philips interchange notes 6BA6/EF93 as partial replacement.
Brans Vademecum (Table Va) lists with 6AU6, 12AU6, 3AU6, 6SH7 family.

Pin Layout — B7G

1Control Grid (g1)

2Cathode

3Heater

4

Socket-Compatible Tubes ⚠ Not electrically compatible

References