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.

2T4
Low-Mu Triode

EIA Base & Outline

EIA Base: 7DKEIA Bulb: 5-1

Substitute Data

Preferred Substitutes ......................... 2AF4

Mechanical Data

Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-1
EIA Base ...................................... 7DK
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 2.0 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.3 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 1.7 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 3.5 W

For other characteristics and typical operation, see 6T4

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

Mon, 03 Oct 2022 04:52:18 -0700