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.

12DF7
High-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 12AX7 12DM7
Substitutes ................................... 12AY7 12BZ7 12DW7

Mechanical Data

EIA Outline ................................... 6-2
EIA Base ...................................... 9A

Electrical Data

Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.3/0.15 A

For other characteristics and typical operation, see 12AX7

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

Wed, 29 Mar 2023 00:18:20 -0700