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A horizontal ribbon.

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A horizontal ribbon.

7391
Planar Triode

EIA Base & Outline

Source ........................................ GE1

Application

The 7391 is a high-mu, metal-and-ceramic triode intended for operation as a grounded-grid, Class C oscillator at frequencies as high as 6000 MHz.

Features of the tube include small size, planar electrode construction with close spacing, inherent rigidity, and an envelope structure convenient for coaxila circuit applications.

The physical appearance and dimensions of the 7391 are identical to those of the 6299.

Mechanical Data

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.38 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.25 pf
Output ........................................ 0.0158 pf
Grid to Plate ................................. 1.58 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 2.25 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier(500 MHz)
Plate Voltage ................................. 150 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 12 mA
Power Output (approx) ......................... 0.5 W

Class C Oscillator/Amplifier(1000 MHz)
Plate Voltage ................................. 150 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 12 mA
Power Output (approx) ......................... 0.25 W

Class C Oscillator/Amplifier(5400 MHz)
Plate Voltage ................................. 150 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 12 mA
Power Output (approx) ......................... 0.065 W

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 02 Jul 2022 22:31:49 -0700