R50A

Miniature end-view gas phototube with S1 red/infrared response for compact electronic control equipment.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

This midget end view tube was designed for applications where space limitation is the controlling factor. Especially adaptable to extremely small electronic control devices. Idedal in use of multiple phototube banks for controlling the moving This miniature tube fits perfectly with the compact designs of Anode Voltage, Peak 0V 500V This variant uses the S1 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
Cathode Size [1]
500
Cathode Size .500" Dia. .500"” Dia.
Cathode Size [2]
500
Cathode Size .500" Dia. .500"” Dia.
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]
0 V
Anode Voltage, Peak 0V 500V
Anode Voltage, Peak [2]
500 V
Anode Voltage, Peak 0V 500V
Luminous Sensitivity [1]
200 V
Luminous Sensitivity 200 uA/L DC 35uA/LDC
Luminous Sensitivity [2]
35 V
Luminous Sensitivity 200 uA/L DC 35uA/LDC
Luminous Sensitivity ( [1]
25 V
Luminous Sensitivity (25v) 30 uA/L DC 30uA/LDC
Luminous Sensitivity ( [2]
30 V
Luminous Sensitivity (25v) 30 uA/L DC 30uA/LDC
Luminous Sensitivity ( [3]
30 V
Luminous Sensitivity (25v) 30 uA/L DC 30uA/LDC
Gas Amplification
10
Gas Amplification 10 ---
Temperature, ambient [1]
100 C
Temperature, ambient 100°C 100°C
Temperature, ambient [2]
100 C
Temperature, ambient 100°C 100°C