12AD7

6 Tubes in archive

BrandSylvania

ClassHigh Mu Double Triode

BaseSmall Button 9-Pin

Filament12.6V @ 225mA

Primary TypeDouble Triode

EnvelopeMiniature

Base MaterialGlass

Sections2

Heater NotesHeater sections can be operated in series (12.6V) or parallel (6.3V).

Plate Voltage300 V

Plate Dissipation1 W

Grid 1 Voltage-50 V

H-C Voltage200 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Class A Amplifier	250V	1600	62500	100	1.25mA

Rigorously controlled to provide hum and microphonic free operation in low level audio preamplifier service.

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