3530

Gas-filled caesium-cathode photoelectric cell for direct light detection. Gas amplification increases output relative to a high-vacuum photocell while retaining the basic single-photocathode photoelectric detection function.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Gas-filled caesium-cathode photoelectric cell.

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: 100 V
Max cathode current: 0.0075 mA

Published Mullard/Ferranti ratings and characteristics promoted where applicable; additional electrical values retained as parameters.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Construction

Photocathode / fill
Gas-filled caesium cathode

Other

Anode voltage maximum
100 V
Normal anode voltage
100 V
Anode current maximum
7.5 uA
Safety resistance minimum
0.1 Mohm

Characteristics

Sensitivity
150 uA/lm
Glow voltage
140 V

Capacitance

Anode-cathode capacitance
5 pF

Application

Application
Photoelectric light detection

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristic

Anode voltage . . . . . . Vg
100 V
Anode voltage . . . . . . Vg = 100 V
Sensitivity . . . . . . . . N
150 µA
Sensitivity . . . . . . . . N = 150 uA/lm
100% corresponds to a sensitivity of
8000 µA
100% corresponds to a sensitivity of 8000 uA/W. That is to say a current of
exceeds 7'
5 µA
exceeds 7'5 uA; too high a current results in positive ions damaging the cathode,

Capacitance

Anode-to-cathode capacity . . Cak
5 pF
Anode-to-cathode capacity . . Cak = 5 pF

Other

Maximum anode voltage . . . Vamax
100 V
Maximum anode voltage . . . Vamax = 100 V
Maximum anode current . . . Iamax
75 µA
Maximum anode current . . . Iamax = 75 uA