Sophia Electric™ S.E.T Princess™ Vacuum Tube Specification

Classification: New design ST shape glass enclosure. Four-pin socket(like 300b base), Direct Heating oxide coated filamentary triode.

Application: Audio amplifier Class A service
Radio amplifier Class B service
Oscillator Class C service

Nominal operating conditions and parameters:

Filament voltage 4.5V
Nominal filament current 1.2A
Plate voltage 400V
Grid voltage -24V
Plate current 50mA
Plate resistance 2.5 Kohms
Amplification factor 7.3

Sophia Electric 2A3 Chart

Limiting Operation conditions for safe operation-nor simultaneous ratings:

Maximum plate voltage 450 volts
Maximum plate dissipation 25 watts
Maximum plate current 70 ma

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