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7378

All-glass beam-power tetrode designed for audio and RF amplifier service and RF oscillator applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 6.3 V / 3.9 A

Description

7378 is listed in the supplied Amperex material as a all-glass beam-power tetrode for AF/RF amplifier and oscillator service. Published electrical ratings and operating data were captured from the supplied table.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 5
Nominal heater voltage: 6.3 V
Nominal heater current: 3.9 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.009 S
Amplification factor: 5.7
Max plate voltage: 850 V
Max screen voltage: 300 V
Max plate dissipation: 100 W
Max screen dissipation: 12 W
Rectifier max heater-cathode voltage: 250 V

Published maximum ratings and general characteristics promoted from the supplied datasheet.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater/Filament Voltage
6.3 V
Heater/Filament Current
3.9 A
Maximum Plate Voltage
850 V
Maximum Plate Dissipation
100 W
Maximum Screen Voltage
300 V
Maximum Screen Dissipation
12 W

Characteristics

Transconductance
9000 uS
Amplification Factor
5.7

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

Heater/filament voltage
6.3 V
Published rating
Heater/filament current
5 A
Published rating
Amplification factor
5.7
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Other

Maximum plate dissipation
100 W
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Plate voltage
750 V
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Plate current
385 mA
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Power output
200 W
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Grid current
10 mA
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Maximum frequency
250 MHz
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