Tube-number record

21DEP4

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BrandSylvania

ClassTelevision Picture Tube

BaseCRT base (B7 family)

Filament6.3 V @ 600 mA

Construction

Primary TypeRectangular Glass

EnvelopeSpherical Faceplate, Gray Filter Glass

Base MaterialPlastic

SectionsSingle

Warm-up Time11s

Heater NotesHeater warm-up time is 11 seconds

Plate Voltage19800 V

Grid 2 Voltage550 V

Grid 1 Voltage-154 V

H-C Voltage450 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Typical Operation	17000 V	—	—	—	—

X-ray radiation shielding may be necessary if operated at higher than 16,000 volts.

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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