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Specialized - Photo Tube ·PhotoemissiveDetector

R71TAV

Visitron high-vacuum S1 phototube from the R71 family, intended for sound-on-film reproduction and industrial optical-control systems requiring stable direct photoelectric response.

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

Description

One of the most commonly used Visitron phototubes of today, the R71 series is universally accepted as THE phototube to use where depend- ability and long trouble-free operation is desired. Recommended as ideal for sound-on-film applications. When used for this purpose this tube is exceptionally The R71 tube is also used extensively in electronic control equipment for weighing, conveyor, illumination controls, smcke and turbidity 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 0.7 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

    0.7 pF

    Variant-specific general characteristic

  • The R7

    1

    The R71 series is supplied with two types of cathode surfaces,

  • response to red radiation of the R7

    1 V

    response to red radiation of the R71 blue sensitive tube makes it valuable in

  • TYPE R7IT Series R7

    1

    TYPE R7IT Series R71T tubes with anode cap are supplied with non-hygro-

  • Cathode Surface...............covenn [1]

    1.25 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [2]

    1 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [3]

    1.25 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [4]

    1 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [5]

    1.25 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [6]

    1 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [7]

    1.25 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Cathode Surface...............covenn [8]

    1 V

    Cathode Surface...............covenn. 1.25" x 1.0” 1.25” x 1.0” 1.25” x 1.0” 1.25" x 1.0

  • Capacitance (Anode-Cathcde) [1]

    2.5 pF

    Capacitance (Anode-Cathcde)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathcde) [2]

    2 pF

    Capacitance (Anode-Cathcde)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathcde) [3]

    8 pF

    Capacitance (Anode-Cathcde)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathcde) [4]

    7 pF

    Capacitance (Anode-Cathcde)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Leakage Resistance (Min) [1]

    1000 Mohm

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

  • Leakage Resistance (Min) [2]

    1000 Mohm

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

  • Leakage Resistance (Min) [3]

    1000 Mohm

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

  • Leakage Resistance (Min) [4]

    1000 Mohm

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

  • Cathode Surface [1]

    1.25

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [2]

    1

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [3]

    1.25

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [4]

    1

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [5]

    1.25

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [6]

    1

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [7]

    1.25

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Cathode Surface [8]

    1

    Cathode Surface....................... 1.25" x 1.0 1.25" x 1.0” 1.25" x 1.0" 1.25" x 1.0”

  • Capacitance (Anode-Cathode) [1]

    2.5 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathode) [2]

    2 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathode) [3]

    8 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 MMF.

  • Capacitance (Anode-Cathode) [4]

    7 pF

    Capacitance (Anode-Cathode)........... 2.5 MMF. 2.0 MMF. < .8 MMF. < .7 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................... sov [1]

    500 V

    Anode Voltage, Peak................... sov 500V 90V 500V

  • Anode Voltage, Peak................... sov [2]

    90 V

    Anode Voltage, Peak................... sov 500V 90V 500V

  • Anode Voltage, Peak................... sov [3]

    500 V

    Anode Voltage, Peak................... sov 500V 90V 500V

  • Luminous Sensitivity [1]

    250 V

    Luminous Sensitivity.................... 250 uA/L DC 40 uwA/L DC 250 uA/L DC 40 uA/L DC

  • Luminous Sensitivity [2]

    40 V

    Luminous Sensitivity.................... 250 uA/L DC 40 uwA/L DC 250 uA/L DC 40 uA/L DC

  • Luminous Sensitivity [3]

    250 V

    Luminous Sensitivity.................... 250 uA/L DC 40 uwA/L DC 250 uA/L DC 40 uA/L DC

  • Luminous Sensitivity [4]

    40 V

    Luminous Sensitivity.................... 250 uA/L DC 40 uwA/L DC 250 uA/L DC 40 uA/L DC

  • Luminous Sensitivity ( [1]

    25 V

    Luminous Sensitivity (25v).............. 45 uA/L DC 37 uA/L DC 45 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [2]

    45 V

    Luminous Sensitivity (25v).............. 45 uA/L DC 37 uA/L DC 45 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [3]

    37 V

    Luminous Sensitivity (25v).............. 45 uA/L DC 37 uA/L DC 45 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [4]

    45 V

    Luminous Sensitivity (25v).............. 45 uA/L DC 37 uA/L DC 45 uA/L DC 37 uA/L DC

  • Luminous Sensitivity ( [5]

    37 V

    Luminous Sensitivity (25v).............. 45 uA/L DC 37 uA/L DC 45 uA/L DC 37 uA/L DC

  • Temperature, ambient [1]

    100 C

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

  • Temperature, ambient [2]

    100 C

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

  • Temperature, ambient [3]

    100 C

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

  • Temperature, ambient [4]

    100 C

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

  • Anode Voltage, Peak................... Qv [1]

    500 V

    Anode Voltage, Peak................... Qv 500V 0V 500V

  • Anode Voltage, Peak................... Qv [2]

    0 V

    Anode Voltage, Peak................... Qv 500V 0V 500V

  • Anode Voltage, Peak................... Qv [3]

    500 V

    Anode Voltage, Peak................... Qv 500V 0V 500V

  • Luminous Sensitivity [1]

    300 V

    Luminous Sensitivity.................... 300 uA/L DC 55 uA/L DC 300 uA/L DC 55 uA/L DC

  • Luminous Sensitivity [2]

    55 V

    Luminous Sensitivity.................... 300 uA/L DC 55 uA/L DC 300 uA/L DC 55 uA/L DC

  • Luminous Sensitivity [3]

    300 V

    Luminous Sensitivity.................... 300 uA/L DC 55 uA/L DC 300 uA/L DC 55 uA/L DC

  • Luminous Sensitivity [4]

    55 V

    Luminous Sensitivity.................... 300 uA/L DC 55 uA/L DC 300 uA/L DC 55 uA/L DC

  • Luminous Sensitivity ( [1]

    25 V

    Luminous Sensitivity (25v).............. 50 uA/L DC 50 uA/L DC 50 uA/L DC 50 uA/L DC

  • Luminous Sensitivity ( [2]

    50 V

    Luminous Sensitivity (25v).............. 50 uA/L DC 50 uA/L DC 50 uA/L DC 50 uA/L DC

  • Luminous Sensitivity ( [3]

    50 V

    Luminous Sensitivity (25v).............. 50 uA/L DC 50 uA/L DC 50 uA/L DC 50 uA/L DC

  • Luminous Sensitivity ( [4]

    50 V

    Luminous Sensitivity (25v).............. 50 uA/L DC 50 uA/L DC 50 uA/L DC 50 uA/L DC

  • Luminous Sensitivity ( [5]

    50 V

    Luminous Sensitivity (25v).............. 50 uA/L DC 50 uA/L DC 50 uA/L DC 50 uA/L DC