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Power - Triode ·Triode

OQQ501500

Tungsram thoriated-filament shortwave transmitting triode for RF power amplification and oscillation. With about 1.5 kV plate capability, 50 W dissipation, and high transconductance, it suits compact shortwave transmitters.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 4 A

Description

Thoriated-filament shortwave transmitting triode for RF power amplification and oscillation.

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
4 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
1300 Ω
Transconductance
0.03 S
Amplification factor
47
Max plate voltage
1500 V
Max plate dissipation
50 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

    4 A

    Nominal

  • Maximum Plate Voltage

    1500 V

  • Maximum Plate Dissipation

    50 W

Characteristic

  • Transconductance

    30000 µS

    Typical

  • Amplification Factor

    47

    Typical

  • Plate Resistance

    1300 ohm

    Typical