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Voltage Tetrode ·Tetrode

24

Screen-grid tetrode intended for receiver voltage amplification, detector, oscillator, or general Class-A service as documented by the manufacturer.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX5
Base pins
5
Nominal heater
2.5 V / 1.75 A

Description

Screen-grid tetrode amplifier employed primarily in radio-frequency applications.

Socket description

Small 5-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX5
Base pins
5
Nominal heater voltage
2.5 V
Nominal heater current
1.75 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 1

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
600000 Ω
Transconductance
0.00105 S
Max plate voltage
275 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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    90 V

    ClassA

Characteristic

  • Plate Current

    4 mA

    ClassA

  • Screen Current

    1.7 mA

    ClassA

Capacitance

  • ControlGridToCathodeCapacitance

    5.3 pF

  • Plate To Cathode Capacitance

    10.5 pF

  • ControlGridToPlateCapacitance

    0.007 pF

    Maximum;WithShield