{"type_number":"6P15P","canonical_url":"https://tubeofile.com/tubes/6P15P","manufacturer":"Svetlana / Reflektor / Saratov / Orel","tube_type_key":"power_pentode","tube_type_display_name":"Power Pentode","base_name":"Noval","description":"Soviet/Russian audio/video output pentode (6П15П). Indirectly heated noval power pentode originally designed for wideband video output stages in television receivers, later widely used in high-quality audio amplifiers (driver and small output). Exported by Svetlana as the SV83. Features high transconductance, low distortion, and an internal shield for low hum pickup.","is_directly_heated":false,"completeness":"high","notes":["Pinout differs from EL84/6P14P: in 6P15P/SV83 the suppressor grid (g3) is brought out to pins 1 and 6 instead of being internally tied to the cathode. The Svetlana datasheet notes that an EL84 may be used in an SV83 socket without modification (pins 1/6 are simply unused on the EL84), but the reverse is NOT automatic — installing a 6P15P/SV83 in an EL84 socket leaves g3 floating, which is generally tolerated but technically incorrect; tying pin 1 (or 6) to the cathode externally restores proper pentode operation.","Screen-grid maximum is only 200 V (1.5 W) per the Svetlana datasheet — substantially lower than EL84 (300 V). Do not exceed Vg2 = 200 V in audio designs.","Internally shielded for low hum pickup — useful in high-gain stages.","The -EV / -ЕВ suffix denotes a long-life / military-reliability quality grade of the same tube (5000 h+), not a different type.","Although Russian sources sometimes describe it as a 'video amplifier' tube, the SV83 export grade is marketed by Svetlana specifically as an audio power pentode suitable as a driver or small output device.","Maximum-rating values vary slightly between Russian (Va_max 250–300 V, Pa_max 12–14 W depending on source/grade) and Svetlana (Va_max 300 V, Pa_max 12 W) datasheets — the conservative Svetlana figures are used here.","Anode (plate) resistance ra = 30 kΩ is taken from the Russian primary datasheet (ORZEP/Orel); the Svetlana SV83 datasheet does not publish a numerical ra. For a pentode operating point this is the typical small-signal value at Va≈200 V, Vg2≈200 V."],"references":["https://frank.pocnet.net/sheets/164/s/SV83spec.pdf","https://klausmobile.narod.ru/testerfiles/6p15p.htm","https://www.radiomuseum.org/tubes/tube_6p15p.html","https://soviet-tubes.com/product/6p15p-tube-pentode/","https://vacuum-tubes.com/6p15p-tube-guide-datasheet-equivalents-6p15p-ev-amplifiers/"],"source_urls":{"r_type":null,"tdsl":null,"radiomuseum":"https://www.radiomuseum.org/tubes/tube_6p15p.html"},"raw_equivalents":["SV83","6P15P-EV","6П15П","6П15П-ЕВ"],"equivalents":[],"similar":[{"type_number":"6CL6","reason":"American video-output pentode of comparable class but different pinout and base wiring; not a drop-in.","has_detail_page":true},{"type_number":"6P14P","reason":"Soviet EL84 equivalent — same caveat as EL84: 6P15P has g3 on pins 1/6, 6P14P does not. Different ratings as well (6P14P is the true EL84 substitute).","has_detail_page":true},{"type_number":"EL83","reason":"Western video-output pentode with broadly similar electricals (mu ~57, gm ~12 mA/V) but different pinout and lower Pa_max (~9 W). Often cited as the 'Western equivalent' but it is not a true drop-in.","has_detail_page":false},{"type_number":"EL84","reason":"Same Noval base and the active pin positions match (g1=2, k=3, h=4/5, a=7, g2=9), BUT 6P15P brings the suppressor grid (g3) out to pins 1 and 6, while in EL84 those pins are unused and g3 is internally tied to the cathode. Plugging a 6P15P into an EL84 socket leaves g3 floating; for correct operation pins 1 and/or 6 must be strapped to the cathode externally. Operating points and screen ratings also differ (EL84 Vg2_max 300 V vs 6P15P 200 V).","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Suppressor Grid (g3) / internal shield","function_code":"g3","notes":null},{"pin_number":"2","function":"Control Grid (g1)","function_code":"g1","notes":null},{"pin_number":"3","function":"Cathode","function_code":"k","notes":null},{"pin_number":"4","function":"Heater","function_code":"h","notes":null},{"pin_number":"5","function":"Heater","function_code":"h","notes":null},{"pin_number":"6","function":"Suppressor Grid (g3) / internal shield","function_code":"g3","notes":null},{"pin_number":"7","function":"Anode","function_code":"a","notes":null},{"pin_number":"8","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"9","function":"Screen Grid (g2)","function_code":"g2","notes":null}],"specs":[{"key":"Vh","display_name":"Heater Voltage","value":"6.3","numeric_value":"6.3","unit":"V","param_group":"heater"},{"key":"Ah","display_name":"Heater Current","value":"0.76","numeric_value":"0.76","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Pentode","tube_type_key":"power_pentode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Vs_max","display_name":"Screen Voltage (max)","value":"200","numeric_value":"200","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"12","numeric_value":"12","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"1.5","numeric_value":"1.5","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"90","numeric_value":"90","unit":"mA","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"100","numeric_value":"100","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"1","numeric_value":"1","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"200","numeric_value":"200","unit":"V","param_group":"typical_operating"},{"key":"Vs","display_name":"Screen Voltage (typical)","value":"200","numeric_value":"200","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"45","numeric_value":"45","unit":"mA","param_group":"typical_operating"},{"key":"mAg2","display_name":"Screen Current","value":"5","numeric_value":"5","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"30000","numeric_value":"30000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"15","numeric_value":"15","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"25","numeric_value":"25","unit":"—","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.07","numeric_value":"0.07","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"13.5","numeric_value":"13.5","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"7.0","numeric_value":"7","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-08T07:53:01.426Z"}