Sophia Electric 845 MK3 Vacuum Tube Specification

Nominal operating conditions and parameters:

Filament voltage 10.0V
Nominal filament current 3.2A
Plate voltage 1250V
Grid voltage -200V
Plate current 80mA
Plate resistance 1.7 Kohms
Amplification factor 5.0
Load resistance 3.4 Kohms
Signal voltage(pk) 69.0V
Output Power 25W

Sophia Electric 845 MK3 Chart

Limiting Operation conditions for safe operation-nor simultaneous ratings:

Maximum plate voltage 1250 volts
Maximum plate dissipation 75 watts
Maximum plate current 120 ma
Maximum input power of signal 150 Watts

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