NJ7P SQL Tube Database Query

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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

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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.

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Complete Tube Manuals:
Tube Manual Index from NJ7P

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Tue, 16 Aug 2022 10:21:08 -0700