Classification- It is a beam pentode. Dome-type bulb of glass, copper ceramic base with eight golden pins, oxide coated cathode of indirect heated, Carbon Plate.
Application -Audio amplifier of power.
Nominal operating conditions and parameters
Heater voltage ……………………………………………………………… 6.3V
Heater current ……………………………………………………………… 1.6A
Plate voltage ………………………………………………………………… 250V
Grid 2 voltage …………………………………………………………… … 250V
Grid 1 voltage ………………………………………………………………… -15V
Plater resistance ………………………………………………………… 12kohms
Plate current ………………………………………………………………… 140mA
Grid 2 current (max) …………………………………………………………… 7mA
Amplification factor …………………………………………………………… 8
Mutual Conductance …………………………………………………… 11.5mA/V
Limiting Operation Conditions for Safe Nor simultaneous ratings
Maximum plate voltage ………………………………………………… 600V
Maximum Grid 2 Voltage ……………………………………………… 500V
Maximum Grid 1 voltage ………………………………………………… -200V
Maximum Power of plate ………………………………………………… 42W
Maximum Power of Grid 2 …………………………………………… 8W
Maximum Power of plate and Grid 2 ………………………………… 46W
Maximun plate Current ………………………………………………… 230mA