NJ7P SQL Tube Database Query

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3D24
Power Tetrode

EIA Base & Outline

EIA Base: F75

Mechanical Data

EIA Base ...................................... F75

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 3 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 6.5 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 0.2 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 400 V
Plate Dissipation ............................. 45 W
Grid No. 2 Dissipation ........................ 10 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 375 V
Grid No. 1 Voltage ............................ -300 V
Grid No. 1 Current ............................ 10 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 20 mA
Driving Power ................................. 4.0 W
Power Output (approx) ......................... 140 W

Class C Oscillator/Amplifier
Plate Voltage ................................. 1500 V
Grid No. 2 Voltage ............................ 375 V
Grid No. 1 Voltage ............................ -300 V
Grid No. 1 Current ............................ 10 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 22 mA
Driving Power ................................. 4.0 W
Power Output (approx) ......................... 105 W

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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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Mon, 27 Jun 2022 07:27:06 -0700