Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Photo Tube ·PhotoemissiveDetector

PJ22

Two-electrode vacuum phototube designed for reliable and accurate photoelectric control applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Two-electrode vacuum phototube for reliable and accurate photoelectric control.

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 1

PhotoemissiveDetector

X-ray radiationInterelectrode capacitances
Max plate voltage
500 V

Phototube has no dedicated canonical SectionType; applicable published electrical ratings/characteristics are promoted where schema fields exist and other data are preserved 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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristic

  • Luminous sensitivity at

    90 V

    Published datasheet value; semantic OCR text extraction.

  • Interelectrode capacitance

    3 pF

    Published datasheet value; semantic OCR text extraction.

  • Maximum dark current at

    90 V

    Published datasheet value; semantic OCR text extraction.

  • Wavelength of maximum response

    7500 angstroms

    Published datasheet value; semantic OCR text extraction.

  • Sensitivity at maximum response

    0.002 microampere per microwatt

    Published datasheet value; semantic OCR text extraction.

Other

  • Anode voltage,d-corpeaka-c iiiiao

    500 V

    Published datasheet value; semantic OCR text extraction.

  • Cathode currentdensity. cuoieviueunueaaeeoa

    0.152 mA

    Published datasheet value; semantic OCR text extraction.