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Voltage - Triode (single) ·Triode

6K5G

High-mu glass-octal triode for general voltage-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5U
Socket code
IO
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

High-mu glass octal triode for general voltage-amplifier service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
5U
Socket code
IO
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

5U - 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
50000 Ω
Transconductance
0.0014 S
Amplification factor
70
Max plate voltage
250 V

Published maximum ratings, characteristics, operating conditions and capacitances reviewed.

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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    250 V

    Published datasheet rating

  • Plate voltage

    250 V

    ClassA

  • Plate current

    1.1 mA

    ClassA

Characteristic

  • Plate resistance

    50000 ohm

    Published datasheet characteristic

  • Transconductance

    1400 µS

    Published datasheet characteristic

  • Amplification factor

    70

    Published datasheet characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate Resistance

    50000 ohm

  • Transconductance

    1400 µS

  • Amplification Factor

    70

Other

  • Plate Voltage

    250 V

    ClassA

  • Grid Voltage

    -3 V

    ClassA

  • Plate Current

    1.1 mA

    ClassA

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    250 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    3 V

    ClassA

  • Plate current

    1.1 mA

    ClassA

Characteristic

  • Plate resistance

    50000 ohm

    Published handbook characteristic

  • Transconductance

    1400 µS

    Published handbook characteristic

  • Amplification factor

    70

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Capacitance

  • Input capacitance

    2.4 pF

    Published capacitance column

  • Output capacitance

    3.6 pF

    Published capacitance column

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    250 V

    ClassA1

Characteristic

  • Plate Current

    1.1 mA

    ClassA1