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Power - Triode ·Triode

31

Directly heated output triode for receiver audio power service, providing single-ended power amplification from early receiving-equipment supply voltages.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4D
Socket code
UX4
Base pins
4
Nominal heater
2 V / 130 mA

Description

Directly heated output triode.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
4D
Socket code
UX4
Base pins
4
Nominal heater voltage
2 V
Nominal heater current
130 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4D - 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
3600 Ω
Transconductance
0.00105 S
Amplification factor
3.8
Max plate voltage
180 V

Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.

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

1932 Cunningham Radio Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Grid-plate capacitance

    5.7 pF

    Published direct interelectrode capacitance

  • Grid-filament capacitance

    3.7 pF

    Published direct interelectrode capacitance

  • Plate-filament capacitance

    2.2 pF

    Published direct interelectrode capacitance

  • Load resistance

    7000 ohm

    Published operating characteristic

Data set 02

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    180 V

    Published datasheet rating

  • Plate voltage

    180 V

    ClassA

  • Control-grid bias

    30 V

    ClassA

  • Plate current

    12.3 mA

    ClassA

  • Load resistance

    5700 ohm

    ClassA

  • Power output

    0.375 W

    ClassA

Characteristic

  • Plate resistance

    3600 ohm

    Published datasheet characteristic

  • Transconductance

    1050 µS

    Published datasheet characteristic

  • Amplification factor

    3.8

    Published datasheet characteristic

  • Heater/filament voltage

    2 V

    Published heater/filament rating

  • Heater/filament current

    130 mA

    Published heater/filament rating

Capacitance

  • Input capacitance

    3.5 pF

    Published capacitance

  • Output capacitance

    2.7 pF

    Published capacitance

  • Grid-to-plate capacitance

    6.7 pF

    Published capacitance

Data set 03

193X Cunningham

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater/filament voltage

    2 V

    Published nominal

  • Heater/filament current

    130 mA

    Published nominal

  • Transconductance

    750 uS

    Published characteristic

  • Amplification factor

    3.8

    Published characteristic

  • Plate resistance

    5100 Ohm

    Published characteristic

Data set 04

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    2 V

    Published nominal value

  • Heater or filament current

    130 mA

    Published nominal value

  • Transconductance

    1050 µS

    Published representative/high operating value

  • Amplification factor

    3.8

    Published representative/high operating value

  • Plate resistance

    3600 ohm

    Published representative/high operating value

Other

  • Audio power output

    0.375 W

    SingleTube; 180 V plate

  • Load resistance

    5700 ohm

    SingleTube; 180 V plate

Data set 05

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    2 V

  • HeaterOrFilamentCurrent

    130 mA

Data set 06

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Input capacitance

    3.5 pF

    Section1

  • Output capacitance

    2.7 pF

    Section1

  • Grid-to-plate capacitance

    5.7 pF

    Section1

Other

  • Plate voltage

    180 V

    ClassA

  • Control-grid voltage

    -30 V

    ClassA

  • Plate current

    12.3 mA

    ClassA

  • Load resistance

    5700 Ω

    ClassA

  • Power output

    0.375 W

    ClassA

Characteristic

  • Plate resistance

    3600 Ω

    ClassA

  • Transconductance

    1050 µS

    ClassA

  • Amplification factor

    3.8

    ClassA

Data set 07

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Power Output

    0.375 W

    BatteryOperation

Characteristic

  • Plate Resistance

    3600 ohm

    HigherVoltageOperatingPoint

  • Transconductance

    1050 uS

    HigherVoltageOperatingPoint