Tube-number record

18Ф5П

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BrandUSSR

ClassTriode-Pentode

BaseNoval (B9A)

Filament18 V @ 300 mA

Construction

Primary TypeMulti-section

EnvelopeGlass

Base MaterialGlass

Sections2

Heater NotesSeries heater connection

Plate Voltage300 V

Plate Dissipation9 W

Grid 2 Voltage250 V

Cathode Current75 mA

H-C Voltage200 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Triode Section	100 V	3900	—	65	3.5 mA
Pentode Section	185 V	7500	—	—	45 mA

Specifically designed for frame scanning in TV receivers with series-connected heater circuits.

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