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Specialized - Photo Tube ·PhotoemissiveDetector

25PA91

Gas-filled cesium phototube sensitive to visible and infrared radiation for photoelectric measurements and film-projector sound adapters.

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

Description

Gas-filled cesium phototube sensitive to visible and infrared radiation, intended for photoelectric measurements and film-projector sound adapters.

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
100 V

Published ratings and characteristics promoted from the source where directly stated.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristics

  • Maximum operating frequency

    10 kHz

    Published phototube limit

  • Sensitivity

    80 to 150 uA/lm

    Visible/infrared phototube