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Power - Triode (over 1000V 100W) ·Triode

FU5

Directly heated power triode designed for modulation and low-frequency power amplification. Its 1.5 kV plate capability and 125 W dissipation suit medium-power audio-output and transmitter-modulator stages.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
10 V / 8.25 A

Description

Power triode for modulation and low-frequency power amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
10 V
Nominal heater current
8.25 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

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
1500 V
Max plate dissipation
125 W

Published limits promoted from translated source.

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

198X Shuguang

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    10 V

    Nominal

  • HeaterCurrentNominal

    8.25 A

    Nominal

  • Maximum Plate Voltage

    1500 V

  • Maximum Plate Dissipation

    125 W