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Voltage Radio Detector Converter ·Tetrode

S23

Two-volt screen-grid valve for stable high-frequency amplification and sensitive detection, emphasizing low current consumption, low microphonics, and high electrode insulation in battery-operated receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B4
Base pins
4
Nominal heater
2 V / 100 mA

Description

A 2-volt screen-grid valve for stable H.F. amplification and sensitive detection, emphasizing low current consumption, low microphonics and high electrode insulation.

Socket description

European 4-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4
Base pins
4
Nominal heater voltage
2 V
Nominal heater current
100 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

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0011 S
Max plate voltage
150 V
Max screen voltage
70 V

Published ratings and characteristics promoted from the approved datasheet.

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 Osram Valves

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Heater Voltage

    2 V

    Published datasheet value

  • Heater Current

    100 mA

    Published datasheet value

  • Anode Voltage Maximum

    150 V

    Published datasheet value

  • Screen Voltage Maximum

    70 V

    Published datasheet value

Characteristic

  • Mutual Conductance

    1100 µS

    Published datasheet value

Data set 02

193X Osram

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Anode-grid capacitance

    0.0029 pF

    Published datasheet value

  • Grid-other-electrodes capacitance

    8.25 pF

    Published datasheet value