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Tube Substitutions for:
12AZ7A
Duo Triode
TypeSubstitutesBase Diagram
12AZ7A12AT7, 12AU7, 12AZ7*†, 12AT7*
Notes:* - Parallel filaments
Web References12AZ7A @ RadioMuseum.org


Type 12AZ7A
Duo Triode



MECHANICAL DATA

Basing9A


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage12.6/6.3Volts
Heater Current0.225/0.45A


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