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Voltage - Triode (single) ·Triode

H63

Triode for resistance-coupled low-frequency voltage amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

Triode for resistance-coupled low-frequency amplification.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
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
Transconductance
0.0015 S
Max plate voltage
250 V

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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Filament Voltage

    6.3 V

  • Filament Current

    300 mA

  • Transconductance

    1500 uS

  • Recommended Anode Load

    0.25 MOhm

  • Recommended Bias Resistance

    2000 ohm

Other

  • Maximum/Published Anode Voltage

    250 V

Capacitance

  • Grid-Anode Capacitance

    2.3 pF

  • Grid-Cathode Capacitance

    3.2 pF

  • Anode-Cathode Capacitance

    7.3 pF