Alternatives & variations Download PDF datasheet

KC4

Directly heated high-vacuum rectifier for extremely high-voltage service, rated around 150 kV peak inverse voltage and intended for specialized HV rectification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 20 V / 24.5 A

Description

High-vacuum rectifier for very high peak-inverse-voltage service.

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: 20 V
Nominal heater current: 24.5 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

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 21500 Ω
Transconductance: 0.0014 S
Amplification factor: 30
Max plate voltage: 150 V
Max plate dissipation: 750 W

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

used at voltages as high as 150,
0 V
Published datasheet value; semantic OCR text extraction.
Maximum peak inverse voltage. 150,
0 V
Published datasheet value; semantic OCR text extraction.
Maximum anode dissipation
750 W
Published datasheet value; semantic OCR text extraction.

Characteristic

Filament voltage
20 V
Published datasheet value; semantic OCR text extraction.
Filament current, approx 24,
5 A
Published datasheet value; semantic OCR text extraction.

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Plate resistance
37500 ohm
PlateVoltage=90V
Amplification factor
30
PlateVoltage=90V
Transconductance
800 uS
PlateVoltage=90V
Plate resistance
21500 ohm
PlateVoltage=135V
Amplification factor
30
PlateVoltage=135V
Transconductance
1400 uS
PlateVoltage=135V

Other

Maximum plate voltage
150 V

Capacitance

Grid input capacitance
3 pF
Plate capacitance
3 pF