5612

Gas-filled phototube designed for photoelectric light detection. Manufacturer data specify spectral response, sensitivity, dark current, and cathode-current ratings for direct optical measurement with gas-enhanced photocurrent.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B12A
Base pins: -
Nominal heater: -

Description

5612 is a gas-filled phototube intended for photoelectric light detection, with published spectral response, sensitivity, dark-current and cathode-current ratings.

Socket description

Duodecal 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B12A
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: 110 V

Gas-filled phototube; source sheet also covers 5613-5617.

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

1945 Continental Electronics

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristic

Spectral Response
S4
Luminous Sensitivity
30 to 180 uA/lm
100 V; 0 cycles
Wavelength Most Useful Maximum
3500 to 4500 angstrom
Sensitivity at Maximum Response
0.125 uA/uW
Gas Amplification
5-5
Source OCR unclear

Other

Dark Current
- to 0.05 uA
100 V
Average Cathode Current
- to 10 uA
Maximum
Peak Cathode Current Density
- to 100 uA/in2
Maximum
Ambient Temperature
- to 75 C
Maximum