10AD7 — Power Pentode, Loctal | TubeofileKnown Equivalents & Substitutes
No known equivalents. If you know of any, use the ⚑ Report Issue button above.
Similar Tubes (Not Drop-In Compatible)
6CH6
Similar sharp-cutoff pentode characteristics but Noval baseSimilar power pentode but Noval base and different heater voltage Electrically identical except for heater voltage (6.3V vs 10V) — not interchangeable without heater modification Electrical Specifications
Absolute Maximum
Anode Voltage (max)Max Plate Voltage300V
Anode Dissipation (max)Max Plate Dissipation10W
Screen Voltage (max)Max Screen Voltage300V
Screen Dissipation (max)Max Screen Dissipation1.2W
Typical Operating
Anode Voltage (typical)Plate Voltage300V
Grid 1 Bias VoltageGrid Voltage-3V
Anode CurrentPlate Current28mA
Screen VoltageScreen Voltage150V
Screen CurrentScreen Current7
Heater
Heater VoltageHeater Voltage10V
Heater CurrentHeater Current0.3A
Notes
- 10V heater variant of the 7AD7, designed for series-string heater circuits in television receivers.
- Same electrical characteristics as the 7AD7: gm=9500 umhos, rp=300k ohms at Va=300V, Vg2=150V.
- GE Essential Characteristics lists this type with the same operating data as 7AD7.
- Very rare type — limited production for specific television receiver designs.
Pin Layout — Loctal
1Heater
2Plate
3Screen Grid (g2)
4
Socket-Compatible Tubes ⚠ Not electrically compatible
mA
Anode ResistancePlate Resistance300,000Ω
TransconductanceTransconductance9.5mA/V
Grid #3 (connected to pin #7 at socket)
5Grid #5 (connected to pin #7 at socket)