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2D2S

Russian diode documented in technical reference literature; available source material does not clearly establish a narrower specialized functional role.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 1.4 V / 1.45 A

Description

2D2S diode from a Russian vacuum-tube reference; technical description translated to English.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 1.4 V
Nominal heater current: 1.45 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

Diode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0001 S
Max plate voltage: 200 V
Max plate dissipation: 5 W

Electrical values extracted only from the filename-designated tube block; page-edge fragments excluded.

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

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

Heater voltage
40 mA
Напряжение накала (при 1а=40 мА). . . . . (1,4==0,2} В
Service life
2500 h
Наработка . . . Кв 2500 ч
Heater voltage
1.2—1.7 V
Напряжение накала . . . . . . . . . . . . . 1,2—1,7 В
Plate voltage
140 V
Напряжение анода . ‚ . . . . . . .. .. , 140 В
Plate current
40 mA
Ток анода 5. ‚ 40 мА
Transconductance
0.1 mA/V
Крутизна характеристики (при 1а 40 мА) ‚ 0,1 мА/В

Other

Reverse voltage
200 V
Обратное напряжение , ‚ 200 В
Plate dissipation
5 V
Мощность, рассеиваемая анодом . ‚ 5 Вт