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Specialized - Photo Tube ·PhotoemissiveDetector

GL918

Photoemissive phototube designed for light measurement, relay, or industrial photoelectric detection.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B4B
Base pins
-
Nominal heater
-

Description

Two-electrode gas-filled phototube for measurement and relay applications, especially at low illumination.

Socket description

Medium 4-pin bayonet

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4B
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

No fixed ratings are recorded for this section.

Phototube has no dedicated canonical SectionType; published electrical ratings and characteristics 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

  • LuminousSensitivity

    150 uA/lm

    At90V

  • MaximumGasAmplification

    10.5

Other

  • MaximumDarkCurrent

    0.1 uA

    At90V

  • Maximum Anode Voltage

    100 V