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.

2C22
Medium-Mu Triode

EIA Base & Outline

EIA Base: 4AM
Source ........................................ ARRL HB - 1948

Mechanical Data

Source ........................................ ARRL HB - 1948
Bulb .......................................... T-9
Base Type ..................................... Octal
Maximum Overall Height ........................ 3.250 In.
Maximum Seated Height ......................... 2.688 In.
Maximum Diameter .............................. 1.313 In.
EIA Base ...................................... 4AM

Electrical Data

Source ........................................ ARRL HB - 1948
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ ARRL HB - 1948
Input ......................................... 2.2 pf
Output ........................................ 0.7 pf
Grid to Plate ................................. 3.6 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ ARRL HB - 1948
Plate Voltage ................................. 500 V
Plate Dissipation ............................. 3.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1948
Plate Voltage ................................. 300 V
Grid No. 1 Voltage ............................ -10.5 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 6.6K Ω
Transconductance .............................. 3000 µMho
Plate Current ................................. 11 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, 30 Jun 2022 16:12:25 -0700