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P25450

Tungsram oxide-filament power triode designed for audio-frequency power amplification. With about 600 V plate capability and 25 W dissipation, it provides substantial linear output for high-voltage audio stages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7.5 V / 1.25 A

Description

Oxide-filament power triode for audio-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: 7.5 V
Nominal heater current: 1.25 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

Plate resistance: 2000 Ω
Transconductance: 0.0038 S
Max plate voltage: 600 V
Max plate dissipation: 25 W

Published ratings and characteristics promoted from the approved 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

195X Tunsgram

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
7.5 V
Nominal
HeaterCurrentNominal
1.25 A
Nominal
Maximum Plate Voltage
600 V
Maximum Plate Dissipation
25 W

Characteristic

Transconductance
3800 µS
Typical
Plate Resistance
2000 ohm
Typical