NJ7P SQL Tube Database Query

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7854
Dual Power Tetrode

EIA Base & Outline

EIA Base: F7

Mechanical Data

EIA Base ...................................... F7

Electrical Data

Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 1.8/0.9 A

Direct Interelectrode Capacitances (approx)

Beam Pentode
Input ......................................... 6.7 pf
Output ........................................ 0.09 pf
Grid to Plate ................................. 2.1 pf

Maximum Ratings (Design Center Values)

Beam Pentode
Plate Voltage ................................. 1000 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 68 W
Grid No. 2 Dissipation ........................ 8 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 260 V
Grid No. 1 Voltage ............................ -75 V
Grid No. 1 Current ............................ 5.5 mA
Plate Current ................................. 240 mA
Grid No. 2 Current ............................ 12.7 mA
Driving Power ................................. 3.5 W
Power Output (approx) ......................... 123 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 225 V
Grid No. 1 Voltage ............................ -75 V
Grid No. 1 Current ............................ 5.5 mA
Plate Current ................................. 200 mA
Grid No. 2 Current ............................ 7.8 mA
Driving Power ................................. 3.5 W
Power Output (approx) ......................... 85 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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Tue, 16 Aug 2022 00:53:38 -0700