NJ7P SQL Tube Database Query

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

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1C4
Tetrode

EIA Base & Outline

EIA Base: 4K

Substitute Data

Preferred Substitutes ......................... 1K4
Substitutes ................................... 1A4 1B4

Mechanical Data

EIA Base ...................................... 4K

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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

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

Sun, 28 Nov 2021 22:34:31 -0700