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Voltage - Triode (single) ·Triode

30

General-purpose directly heated triode for amplifier, detector, oscillator, and automatic-volume-control service in battery-operated receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4D
Socket code
UX4
Base pins
4
Nominal heater
2 V / 60 mA

Description

General-purpose directly heated triode for amplifier, detector, oscillator, and AVC service.

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
60 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
10300 Ω
Transconductance
0.0009 S
Amplification factor
9.3
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

    6 pF

    Published direct interelectrode capacitance

  • Grid-filament capacitance

    3.7 pF

    Published direct interelectrode capacitance

  • Plate-filament capacitance

    2.1 pF

    Published direct interelectrode capacitance

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

    13.5 V

    ClassA

  • Plate current

    3.1 mA

    ClassA

  • Push-pull plate voltage

    180 V

    ClassB PushPull TwoTubes

  • Push-pull power output

    2.5 W

    ClassB PushPull TwoTubes

Characteristic

  • Plate resistance

    10300 ohm

    Published datasheet characteristic

  • Transconductance

    900 µS

    Published datasheet characteristic

  • Amplification factor

    9.3

    Published datasheet characteristic

  • Heater/filament voltage

    2 V

    Published heater/filament rating

  • Heater/filament current

    60 mA

    Published heater/filament rating

Capacitance

  • Input capacitance

    3.7 pF

    Published capacitance

  • Output capacitance

    2.1 pF

    Published capacitance

  • Grid-to-plate capacitance

    5 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

    60 mA

    Published nominal

  • Transconductance

    900 uS

    Published characteristic

  • Amplification factor

    9.3

    Published characteristic

  • Plate resistance

    10300 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

    60 mA

    Published nominal value

  • Transconductance

    900 µS

    Published representative/high operating value

  • Amplification factor

    9.3

    Published representative/high operating value

  • Plate resistance

    10300 ohm

    Published representative/high operating value

Capacitance

  • Grid-to-plate capacitance

    6 pF

    Published

  • Grid-to-filament capacitance

    3 pF

    Published

  • Plate-to-filament capacitance

    2.1 pF

    Published

Data set 05

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    2 V

  • HeaterOrFilamentCurrent

    60 mA

Data set 06

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    2 V

  • HeaterOrFilamentCurrent

    60 mA

Data set 07

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Input capacitance

    3 pF

    Section1

  • Output capacitance

    2.2 pF

    Section1

  • Grid-to-plate capacitance

    6 pF

    Section1

Other

  • Plate voltage

    180 V

    ClassA

  • Control-grid voltage

    -13.5 V

    ClassA

  • Plate current

    3.1 mA

    ClassA

Characteristic

  • Plate resistance

    10300 Ω

    ClassA

  • Transconductance

    900 µS

    ClassA

  • Amplification factor

    9.3

    ClassA

Data set 08

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate Resistance

    10300 ohm

    PlateVoltage=180V

  • Transconductance

    900 uS

    PlateVoltage=180V

  • Amplification Factor

    9.3

    PlateVoltage=180V