Tube-number record

4521

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BrandRCA

ClassPhotomultiplier Tube

BaseDiheptal

Construction

Primary Type

Multi-section

EnvelopeAluminum-Oxide Window

Base MaterialSmall-Shell Diheptal

Sections10-stage

Plate Voltage2000 V

Grid 2 Voltage250 V

Grid 1 Voltage600 V

Cathode Current0.5 mA

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Photometric Applications	1500 V	—	—	2200000	0.009 mA

Electrostatic and magnetic shielding usually required. Shield must be at cathode potential. Operating voltage is dangerous; avoid contact.

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