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Specialized - Photo Tube ·PhotoemissiveDetector

F3U1

Russian antimony-cesium photoemissive detector for sound-reproducing cinema equipment and optical instrumentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
0
Nominal heater
-

Description

The F3U1 is a antimony-cesium phototube for sound-reproducing cine and instrumentation equipment.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
0
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
250 V

Full electrical-data audit completed for this tube.

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 Russian

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristics

  • Spectral response lower wavelength

    4000 angstrom

    Published range lower bound

  • Spectral response upper wavelength

    6000 angstrom

    Published range upper bound

  • Peak-response wavelength

    4000 to 5000 angstrom

    4500 +/- 500 angstrom

  • Total anode sensitivity

    600 uA/lm

    At 220 V supply

  • Dark current

    0.0001 mA

    Maximum at 220 V

  • Working temperature

    10 to 30 degC

    Published range

Other

  • Supply voltage

    - to 250 V

    Typical 220 V, maximum less than 250 V DC