56AVP

Amperex photomultiplier tube for sensitive optical measurement. Cascaded electron-multiplication stages provide high internal gain from weak photocathode currents, supporting low-light detection applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B20
Base pins: -
Nominal heater: -

Description

56AVP is listed in the supplied Amperex material as a photomultiplier tube. Published ratings and characteristics were captured from the supplied table.

Socket description

Bidecal 20-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B20
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

Photomultiplier

X-ray radiationInterelectrode capacitances

Max plate dissipation: 1 W

Published ratings/characteristics reviewed.

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 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Photomultiplier

Characteristic

Minimum useful photocathode diameter
42 mm
Photomultiplier
Number of dynodes
14
Photomultiplier
Maximum spectral response
4200 angstrom
Photomultiplier
Average photocathode sensitivity
50 uA/lm
Photomultiplier
Luminous-flux linearity lower ratio
100
Photomultiplier
Luminous-flux linearity upper ratio
300
Photomultiplier

Other

Maximum anode dissipation
1 W
Photomultiplier

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Photomultiplier

Construction

Multiplier stages
14
Useful photocathode diameter
42 mm

Other

Maximum/typical total voltage
2500 V
Maximum continuous anode current
2 mA

Capacitance

Anode-to-final-dynode capacitance
3 pF
Anode-to-all-other-electrodes capacitance
5 pF

Characteristics

Minimum gain at 2000 V
1000000000