{"type_number":"6J11P","canonical_url":"https://tubeofile.com/tubes/6J11P","manufacturer":"Reflector","tube_type_key":"ss_pentode","tube_type_display_name":"Small Signal Pentode","base_name":"Noval","description":"Soviet high-transconductance sharp-cutoff pentode (6Ж11П) designed for wideband IF amplifier and video amplifier applications. Noval (B9A) base. Equivalent to the Philips/Mullard E280F. Exceptionally high transconductance (up to 40 mA/V) makes it suitable for demanding wideband amplifier designs.","is_directly_heated":false,"completeness":"high","notes":["6J11P is the Latin transliteration of the Cyrillic designation 6Ж11П.","Quality suffix variants (6J11P-E) exist — only the base designation is catalogued here.","Extremely high transconductance (up to 40 mA/V) — one of the highest-gm small-signal pentodes.","The E280F is the Western European equivalent from Philips/Mullard.","Primarily used in oscilloscope and instrumentation amplifiers requiring high gain-bandwidth."],"references":["https://tdsl.duncanamps.com/show.php?des=6J11P","https://www.radiomuseum.org/tubes/?tube=6J11P"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6J11P","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6j11p.html"},"raw_equivalents":["E280F"],"equivalents":[],"similar":[],"pins":[{"pin_number":"1","function":"Suppressor Grid (g3, internally connected to cathode)","function_code":"g3","notes":null},{"pin_number":"2","function":"Anode","function_code":"a","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":"Screen Grid","function_code":"g2","notes":null},{"pin_number":"7","function":"Control Grid","function_code":"g1","notes":null},{"pin_number":"8","function":"Internal Shield","function_code":"ia","notes":null},{"pin_number":"9","function":"Internal Shield","function_code":"ia","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":"0.45","numeric_value":"0.45","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Pentode","tube_type_key":"ss_pentode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"250","numeric_value":"250","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":"3.4","numeric_value":"3.4","unit":"W","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":"150","numeric_value":"150","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-1.5","numeric_value":"-1.5","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"20","numeric_value":"20","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"6","numeric_value":"6","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"100000","numeric_value":"100000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"40","numeric_value":"40","unit":"mA/V","param_group":"typical_operating"}]}],"synced_at":"2026-04-07T12:25:14.404Z"}