NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

12CX6
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BKEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 12DZ6 12EA6
Substitutes ................................... 12EK6
Source ........................................ Sylvania - 1959

Application

Source ........................................ Sylvania - 1959
Miniature type used as an rf or if amplifier. This tube is designed to operate where heater and plate voltage ar supplied directly from a 12 volt battery. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ Sylvania - 1959
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ Sylvania - 1959
Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ Sylvania - 1959
Input ......................................... 7.6 pf
Output ........................................ 6.2 pf
Grid to Plate ................................. 0.05 pf

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 12.6 V
Grid No. 2 Voltage ............................ 12.6 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 40K Ω
Transconductance .............................. 3100 µMho
Plate Current ................................. 3 mA
Grid No. 2 Current ............................ 1.4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 21 Mar 2023 03:22:29 -0700