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B120

Low-power copper-target X-ray tube for radiography of plastics and thin metals, with grid-controlled focus and operation to approximately 25 kV.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: InternationalOctal
Socket code: IO
Base pins: 8
Nominal heater: -

Description

Low-power copper-target X-ray tube for radiography of plastics and thin metals, with grid-controlled focus.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: InternationalOctal
Socket code: IO
Base pins: 8
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

InternationalOctal - 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

XRay

X-ray radiationInterelectrode capacitances

Max plate voltage: 25000 V
Max plate dissipation: 25 W

Promoted fields were populated only where the Ferranti sheet maps cleanly to the locked schema; additional ratings and operating values are retained in TUBE_SECTION_PARAMETER.

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

1963 Ferranti

Published operating points and test conditions from this source.

SECTION 1

XRay

Other

AC target voltage maximum
25000 V
50Hz
Intermittent target dissipation maximum
150 W
Max20s
Negative grid voltage magnitude maximum
1400 V
Filament current maximum
6 A
Target voltage
20000 V
DC;GridBias
Grid voltage
-250 V
DC;GridBias
Target voltage
15000 V
DC;AutoBias
Target current
1.5 mA
DC;AutoBias

Characteristics

Filament current
5.8 A
Target voltage
15000 V
Grid bias
-150 V
Target current
1.2 mA