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Specialized - Photo Tube ·Photomultiplier

1P28

Nine-stage ultraviolet-sensitive photomultiplier for scientific measurement and scintillation-counting applications.

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

Description

Nine-stage multiplier phototube with S-5 ultraviolet response for scientific measurement and scintillation counting.

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

Photomultiplier

X-ray radiationInterelectrode capacitances
Max plate voltage
1250 V
Max cathode current
0.5 mA

Published maximum ratings and electrical characteristics promoted from the approved source.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Photomultiplier

Other

  • Maximum Plate Voltage

    1250 V

  • Maximum Cathode Current

    0.5 mA

  • PeakAnodeCurrentMaximum

    5 mA

  • AverageAnodeCurrentMaximum

    0.5 mA

Characteristic

  • CurrentAmplification

    1000000

    100 V per dynode stage