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.

3BL2
Half-Wave Rectifier

EIA Base & Outline

EIA Base: 12HKEIA Bulb: 9-100

Substitute Data

Substitutes ................................... 3BM2 3AT2 3AW2

Mechanical Data

EIA Outline ................................... 9-100
EIA Base ...................................... 12HK

Electrical Data

Filament Voltage .............................. 3.3 V
Filament Current .............................. 0.285 A

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

Tue, 28 Mar 2023 22:56:46 -0700