FJ405

Two-electrode high-vacuum phototube highly responsive to ultraviolet radiation from approximately 2000–4000 Å. Designed for laboratory UV measurement and industrial checking of ultraviolet lamps.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

The FJ-405 is a two-electrode high-vacuum phototube highly responsive to ultraviolet radiation from 2000 to 4000 angstroms, used for laboratory ultraviolet measurement and industrial checking of ultraviolet lamps.

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: -
Nominal heater current: -
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 0

PhotoemissiveDetector

X-ray radiationInterelectrode capacitances

Max plate voltage: 200 V

Phototube section. Maximum anode voltage promoted; spectral and sensitivity data preserved as parameters.

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 0

PhotoemissiveDetector

Characteristic

Spectral Response Minimum Wavelength
2000 angstrom
Spectral Response Maximum Wavelength
4000 angstrom
Wavelength of Maximum Response
2800 angstrom
Luminous Sensitivity
12 uA/lumen
67.5V 0Cycles
Interelectrode Capacitance
5 pF

Other

Maximum Dark Current
0.1 uA
100V