Higher-powered WE triode with same UX4 base but higher plate dissipation (36W vs 20W) and different operating conditions
Electrical Specifications
Absolute Maximum
Anode Voltage (max)Anode Voltage (max)400V
Anode Dissipation (max)Anode Dissipation (max)20W
Typical Operating
Anode Voltage (typical)Anode Voltage (typical)300V
Grid 1 Bias VoltageGrid Bias Voltage-51V
Anode Current
Notes
The 350A was designed by Western Electric for use in telephone repeaters and public address systems. The 350B is a later version with improved construction.