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Specialized - Photo Tube ·PhotoemissiveDetector

1P26

Gas-filled two-electrode phototube with enhanced sensitivity in the red and infrared spectral regions.

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

Description

The 1P26 is a gas-filled two-electrode phototube with high sensitivity in the red and infrared.

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

No fixed ratings are recorded for this section.

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 0 cycles

    290 uA/lm

  • Maximum gas amplification

    8

  • Interelectrode capacitance

    3 pF

  • Maximum dark current at 90 V

    0.1 uA

  • Wavelength of maximum response

    7500 angstrom

  • Sensitivity at maximum response

    0.0105 uA/uW

Other

  • Anode voltage

    100 V

  • Cathode current density

    102 uA/in2

  • Ambient temperature maximum

    100 C