6P15P-ER = EL83 = SV83 tube. Gold grid
The 6P15P-ER (6П15П-ЕR) output pentode is designed for amplification of output video-frequency voltage in television equipment.
The 6P15P-ER output pentodes are miniature devices enclosed in glass bulb and are provided with a nine-pin base and an indirectly heated oxide-coated cathode.
The 6P15P-ER electorn tube output pentodes are resistant to ambient temperature from -60 to +70°C and relative humidity of 95 to 98% at +40°C, as well as to mechanical loads: vibration loads up to 2.5g and multiple impact loads up to 35g.
These are premium quality Russian 6P15P-ER tubes. -ER (EP) suffix suggests they are rated twice as long service live (10,000 hours). The tube contains a gold at the first grid 7.337 mg.
All tubes new, military equipment and have "OTK" mark. Near equivalent: EL83, SV83 and 6P1T. The tube is manufactured by the Reflector plant, Saratov, Russia.
Type: output pentode, hi-durable
Application: amplification in special equipment
Cathode type: oxide, indirect heating
Envelope: glass, miniature
Mass, g: 20
Filament voltage, V: 6,3
Filament current, A: 0,7-0,82
Anode voltage, V: 300
Anode current, mkA: 1
Anode power, W: 12
Grid2 voltage, V: 150
Steepness, mA/V: 12,0-17,4
Reverse grid current, uA: 0,7
Microphnic noise, mV: 250
Socket type: rsh8
All datasheets here.