NJ7P SQL Tube Database Query

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4HK5
High-Mu Triode

EIA Base & Outline

EIA Base: 7GMEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 4HA5 4HQ5

Electrical Data

Heater Voltage ................................ 4.0 V
Heater Current ................................ 0.3 A

For other characteristics and typical operation, see 6HK5

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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

Sat, 25 Jun 2022 16:11:39 -0700