NJ7P SQL Tube Database Query

A horizontal ribbon.

Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.

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.

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

Please enter the tube number:

This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

A horizontal ribbon.

(c) 1994-2021 by William A. Beech, NJ7P

Thu, 08 Dec 2022 02:26:48 -0700