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5C12P

Russian indirectly heated high-voltage kenotron for half-wave AC rectification in stationary and mobile equipment, providing approximately 5 kV inverse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: -
Nominal heater: 4.5 V / 870 mA

Description

The 5C12P is an indirectly heated high-voltage kenotron for rectifying AC in stationary and mobile equipment.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: -
Nominal heater voltage: 4.5 V
Nominal heater current: 870 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

Rectifier

X-ray radiationInterelectrode capacitances

Max plate dissipation: 5 W
Rectifier peak inverse voltage: 5000 V
Rectifier nominal output current: 50 mA
Rectifier peak forward current: 350 mA

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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Anode voltage
40 V
Published test point
Anode current
50 mA
Published test point

Other

Transformer secondary voltage
2 kV
AC
Load resistance
43.5 kOhm
Rectifier test
Filter capacitance
1 uF
Rectifier test
Peak reverse voltage
5 kV
Published limit
Peak anode current
350 mA
Published limit
Peak anode current on switching
2 A
Published limit
Rectified current
50 mA
Published limit
Anode dissipation
5 W
Published limit

Data set 02

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Plate current
250 mA
Ток анода . 2 . . — 250 мА
Rectified current
>50 mA
Выпрямленный ток (при П…—? кВ иобр 5 кВ, — >50 мА
Service life
2500 h
Наработка . . ке 2500 ч
Rectified current
45 mA
выпрямленный ток , . . .. .. .. ., 45 мА
Heater voltage
4.5—5.5 V
Напряжение накала . . . . . .. .. ,. , 4,5—5,5 В
Rectified current
50 mA
Выпрямленный ток (среднее значение) жж . . 50 мА
Plate current
350 mA
Ток анода (амплитудное значение). . . . . . . — 350 мА
Plate current
225 mA
Ток анода (при (,=75 В): к о.н. . 225 мА

Other

Reverse voltage
5 Кв
Обратное напряжение . . . ке з,. 5Кв