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Tube Tinker — Electron Tube Database
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Power - Triode ·Triode

DA

Power triode for audio-output, amplifier, or oscillator service with manufacturer operating data supporting substantial power delivery.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
G5K
Base pins
5
Nominal heater
5.8 V / 1.1 A

Description

A directly heated triode with a 5.8 V, 1.1 A filament, 50 mA operating anode current and 13 W maximum anode dissipation.

Socket description

EU-Telephone 5-pin

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
G5K
Base pins
5
Nominal heater voltage
5.8 V
Nominal heater current
1.1 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 0

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
1450 Ω
Transconductance
0.0025 S
Amplification factor
3.64
Max plate voltage
400 V
Max plate dissipation
13 W
Max cathode current
100 mA

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 0

Triode

Other

  • Anode voltage

    220 V

  • Grid bias

    -30 V

  • Anode current

    50 mA

  • Durchgriff

    27.5 %

  • Cold anode voltage maximum

    400 V

  • Grid leak resistance maximum

    800 kΩ

Capacitance

  • Grid-anode capacitance

    13.5 pF

Data set 02

1963 Siemens

Published operating points and test conditions from this source.

SECTION 0

Triode

Characteristic

  • Typical Plate Voltage

    220 V

  • TypicalGridVoltage

    -30 V

  • Typical Plate Current

    50 mA

Other

  • Power Output

    1 W

    ClassA OneTube