Tube-number record

5A/102-A

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BrandStandard Valves

ClassOutput Pentode

Base6-pin

Filament7.5 V @ 0.85 mA

Construction

Primary TypePentode

EnvelopeGlass

SectionsSingle

Heater NotesConstant current type

Plate Voltage180 V

Grid 2 Voltage150 V

Cathode Current50 mA

Power Output1 W

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Pentode	180 V	2500	43000	110	—

Maximum direct screen current 10 mA. Maximum control grid resistance using auto-bias is 500,000 ohms.

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