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Specialized - Photo Tube ·PhotoemissiveDetector

R85AV

Non-directional Visitron high-vacuum phototube with 360-degree optical pickup. Designed for multidirectional sensing in target games and burglar or fire alarms, it provides stable direct photoelectric detection.

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

Description

A non-directional Visitron Phototube hav- ing a 360° pickup. Features an increased sensitivity due to utilization of all energy from the light source. Ideal wherever multi-directional applications are employed such as electronic operated target games, multiple beam burglar and fire alarms, etc. This variant uses the S1 cathode surface described by the family datasheet. The V variant is the higher-voltage vacuum version listed in the maximum-ratings table.

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

Photoelectric section. Published anode-cathode capacitance approximately 2.0 pF.

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 Visitron Rauland

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Other

  • Peak Anode Voltage

    500 V

    Variant-specific maximum rating

  • Anode-Cathode Capacitance

    2 pF

    Variant-specific general characteristic

  • ing a

    360 V

    ing a 360° pickup. Features an increased sensitivity

  • Cathode Size [1]

    1

    Cathode Size 1.000" x .500" 1.000" x .500"

  • Cathode Size [2]

    500

    Cathode Size 1.000" x .500" 1.000" x .500"

  • Cathode Size [3]

    1

    Cathode Size 1.000" x .500" 1.000" x .500"

  • Cathode Size [4]

    500

    Cathode Size 1.000" x .500" 1.000" x .500"

  • Capacitance (Anode-Cathode) [1]

    2.5 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF.

  • Capacitance (Anode-Cathode) [2]

    2 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF.

  • Leakage Resistance (Min) [1]

    1000 Mohm

    Leakage Resistance (Min)............... 1000 Meg. 1000 Meg.

  • Leakage Resistance (Min) [2]

    1000 Mohm

    Leakage Resistance (Min)............... 1000 Meg. 1000 Meg.

  • Anode Voltage, Peak [1]

    9 V

    Anode Voltage, Peak.................... 9oVv 500V

  • Anode Voltage, Peak [2]

    500 V

    Anode Voltage, Peak.................... 9oVv 500V

  • Luminous Sensitivity [1]

    175 V

    Luminous Sensitivity..................... 175 wA/L DC 40 uA/L DC

  • Luminous Sensitivity [2]

    40 V

    Luminous Sensitivity..................... 175 wA/L DC 40 uA/L DC

  • Luminous Sensitivity ( [1]

    25 V

    Luminous Sensitivity (25v)............... 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [2]

    40 V

    Luminous Sensitivity (25v)............... 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [3]

    37 V

    Luminous Sensitivity (25v)............... 40 uA/L DC 37 uA/L DC

  • Gas Amplification

    8

    Gas Amplification. .................... .. 8 - - -

  • Temperature, ambient [1]

    100 C

    Temperature, ambient................... 100°C 100°C

  • Temperature, ambient [2]

    100 C

    Temperature, ambient................... 100°C 100°C