6AY11 — Compound (multi-section), Duodekal | TubeofileKnown Equivalents & Substitutes
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Electrical Specifications
Section 1 — Triode (each unit)
Absolute Maximum
Anode Voltage (max)Anode Voltage (max)330V
Anode Dissipation (max)Anode Dissipation (max)1W
Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max)200V
Typical Operating
Anode Voltage (typical)Anode Voltage (typical)250V
Grid 1 Bias VoltageGrid Voltage-2V
Anode CurrentAnode Current1.2mA
Anode ResistancePlate Resistance52,700Ω
TransconductanceTransconductance
Section 2 — Diode (each unit)
Rectifier
DC Output Current (max)Plate Current (max)5mA
Heater
Heater VoltageHeater Voltage6.3V
Heater CurrentHeater Current0.69A
Notes
- Each triode unit: μ=100, ra≈52.7kΩ, gm=1900µmhos. Class A1 operating point: Va=250V, Vg=−2V, Ia=1.2mA.
- Each diode unit: max plate current 5mA DC; instantaneous plate current 18mA at 5V plate voltage.
- Heater-to-cathode voltage: max 200V with heater negative; max 200V with heater positive (DC component must not exceed 100V).
- Capacitance data (without external shield): diode Pd–(Kd,H)=2.0pF, Kd–(Pd,H)=5.5pF; triode grid-to-plate=2.2pF, input=2.0pF, output=0.22pF; cross-section Gt–Pd=0.08pF max, Gt1–Gt2=0.01pF max, Pt1–Pt2=0.48pF.
1.9mA/V
Amplification Factor (μ)Amplification Factor (μ)100—
Cathode of Diode Unit No.2
3Plate of Diode Unit No.2
4Cathode of Triode Unit No.2
5Grid of Triode Unit No.2
6Plate of Triode Unit No.2
7Plate of Triode Unit No.1
8Grid of Triode Unit No.1
9Cathode of Triode Unit No.1
10Plate of Diode Unit No.1
11Cathode of Diode Unit No.1