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Specialized - Photo Tube ·PhotoemissiveDetector

R51B

Gas-amplified blue-sensitive phototube optimized for portable 16 mm optical sound-on-film reproduction.

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

Description

The rectangular anode of this tube offers no interference to the smallest of light sources, thus permitting a shadow-free cathode area. This particular Visitron is commonly used in portable 16 MM scund-on-film production "A" type sensitive to infra-red and “B" type sensitive to blue. The R51 blue sensitive Visitron phototubes have increased sensi- tivity to light scurces predominating in blue radiation and a negligible sensitivity This variant uses the blue-sensitive cathode surface described by the family datasheet. The non-V variant has published gas amplification in the family 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
90 V

Photoelectric section. Published anode-cathode capacitance approximately 2.5 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

    90 V

    Variant-specific maximum rating

  • Anode-Cathode Capacitance

    2.5 pF

    Variant-specific general characteristic

  • The R5

    1

    The R51 Series is supplied with two types of cathode surfaces,

  • The R5

    1 V

    The R51 blue sensitive Visitron phototubes have increased sensi-

  • track in conjunction with an incandescent light source. The R5

    1 V

    track in conjunction with an incandescent light source. The R51B blue sensitive

  • Cathode Size [1]

    843

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [2]

    500

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [3]

    843

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [4]

    500

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [5]

    843

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [6]

    500

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [7]

    843

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Cathode Size [8]

    500

    Cathode Size. .. ... ... ... ... .. .843" x .500" .843" x .500” .843" x .500" .843" x .500"

  • Capacitance (Anode-Cathode) [1]

    2.5 pF

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

  • Capacitance (Anode-Cathode) [2]

    2 pF

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

  • Capacitance (Anode-Cathode) [3]

    2.5 pF

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

  • Capacitance (Anode-Cathode) [4]

    2 pF

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

  • Leakage Resistance (Min) . = [1]

    1000 Mohm

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

  • Leakage Resistance (Min) . = [2]

    1000 Mohm

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

  • Leakage Resistance (Min) . = [3]

    1000 Mohm

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

  • Leakage Resistance (Min) . = [4]

    1000 Mohm

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

  • Anode Voltage, Peak [1]

    90 V

    Anode Voltage, Peak. .. . . .. 90V 500V oV S0V

  • Anode Voltage, Peak [2]

    500 V

    Anode Voltage, Peak. .. . . .. 90V 500V oV S0V

  • Luminous Sensitivity ( [1]

    25 V

    Luminous Sensitivity (25v) = . 35 uA/L DC 35 uA/L DC 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [2]

    35 V

    Luminous Sensitivity (25v) = . 35 uA/L DC 35 uA/L DC 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [3]

    35 V

    Luminous Sensitivity (25v) = . 35 uA/L DC 35 uA/L DC 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [4]

    40 V

    Luminous Sensitivity (25v) = . 35 uA/L DC 35 uA/L DC 40 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [5]

    37 V

    Luminous Sensitivity (25v) = . 35 uA/L DC 35 uA/L DC 40 uA/L DC 37 uA/L DC

  • Gas Amplification [1]

    12

    Gas Amplification. . ... . ... .. 12 - - - 10 - -

  • Gas Amplification [2]

    10

    Gas Amplification. . ... . ... .. 12 - - - 10 - -

  • Temperature, ambient [1]

    160 C

    Temperature, ambient. . .. . .. . 160°C 100°C 100°C 100°C

  • Temperature, ambient [2]

    100 C

    Temperature, ambient. . .. . .. . 160°C 100°C 100°C 100°C

  • Temperature, ambient [3]

    100 C

    Temperature, ambient. . .. . .. . 160°C 100°C 100°C 100°C

  • Temperature, ambient [4]

    100 C

    Temperature, ambient. . .. . .. . 160°C 100°C 100°C 100°C