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6AC9
Dual Diode - Pentode

Base & Bulb ( Sylvania)

Substitute Data

Preferred Substitutes ......................... 1852

Application

Duodecar type used as combined detector and if amplifier in tv receivers. Requires duodecar 12-contact socket.

Mechanical Data

Bulb .......................................... T-9
Outline ....................................... 9-57
EIA Base ...................................... 12GN

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.365 A
Heater Warm-up Time ........................... 11 s
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component .............................. 100 V
Total DC and Peak ......................... 200 V
Heater Negative with Respect to Cathode
DC Component .............................. 200 V
Total DC and Peak ......................... 200 V

Direct Interelectrode Capacitances (approx)

Diode 1
Input ......................................... 1.6 pf

Direct Interelectrode Capacitances (approx)

Diode 2
Input ......................................... 1.8 pf

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 8.0 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 0.046 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 2.5 W
Grid No. 2 Dissipation ........................ 0.55 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 10000 µ
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4.5 mA

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