12AX7WA

10 Tubes in archive

BrandTUNG-SOL

ClassTWIN TRIODE

Base9 PIN NOVAL E9-1

Filament12.6V @ 150mA

Construction

Primary TypeTRIODE

EnvelopeGLASS BULB

Base MaterialSMALL BUTTON

SectionsTWO

Filament / Heater

Heater NotesCENTER TAPPED HEATER CONNECTION PERMITS OPERATION FROM EITHER A 6.3 VOLT OR 12.6 VOLT SUPPLY AND IN 300 MA. OR 150 MA. SERIES HEATER SERVICE.

Absolute Maximum Ratings

Plate Voltage330 V

Plate Dissipation1 W

Grid 1 Voltage-30 V

Audio Performance

Typical THD5%

Key Features

HIGH-MU TRIODES
HIGH GAIN AUDIO AMPLIFIER SERVICE
MILITARY APPLICATIONS
COATED UNIPOTENTIAL CATHODE
ANY MOUNTING POSITION

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
CLASS A1 AMPLIFIER	250V	1650	62500	100	1.2mA

Application Notes

ADAPTABLE TO APPLICATIONS WHERE HIGH VOLTAGE GAIN AND LOW POWER ARE THE IMPORTANT CONSIDERATION, SUCH AS VOLTAGE AMPLIFIER, PHASE INVERTERS OR MULTIVIBRATORS.