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12EK6
Remote-Cutoff Pentode

Base & Bulb ( ARRL HB - 1964)

Substitute Data

Preferred Substitutes ......................... 12EA6 12DZ6
Substitutes ................................... 12CX6

Mechanical Data

Bulb .......................................... T-5 1/2
Base .......................................... Miniature Button 7-Pin
Outline ....................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.19 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 10 pf
Output ........................................ 5.5 pf
Grid to Plate ................................. 0.032 pf

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 12.6 V
Grid No. 2 Voltage ............................ 12.6 V
Grid No. 1 Voltage ............................ -4 V
Plate Resistance (approx) ..................... 40K Ω
Transconductance .............................. 4200 µ
Plate Current ................................. 4.4 mA
Grid No. 2 Current ............................ 2 mA

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