{"type_number":"6P1","canonical_url":"https://tubeofile.com/tubes/6P1","manufacturer":null,"tube_type_key":"beam_tetrode","tube_type_display_name":"Beam Tetrode","base_name":"Rimlock","description":"Soviet beam power tetrode (6П1) for output stages of low-frequency amplifiers. Glass envelope with rimlock/USSR-specific base. Functionally similar to the Western 6V6 but with a different base type — not a direct pin-compatible replacement. Used extensively in Soviet radio receivers and public address equipment.","is_directly_heated":false,"completeness":"medium","notes":["Cyrillic designation: 6П1. Uses a Soviet-specific rimlock base, not compatible with Western Octal or Noval sockets.","Valve_equivalents.json lists the base as 'I/O' (rimlock/USSR internal designation).","Designed for single-ended and push-pull output stages. Typical output power ~4.5W single-ended.","Not widely available in Western markets. The 6P6S (6П6С, Octal base) is the more commonly exported Soviet equivalent of the 6V6."],"references":["https://www.radiomuseum.org/tubes/tube_6p1.html"],"source_urls":{"r_type":null,"tdsl":null,"radiomuseum":"https://www.radiomuseum.org/tubes/tube_6p1.html"},"raw_equivalents":[],"equivalents":[],"similar":[{"type_number":"6P14P","reason":"Later Soviet output pentode (EL84 equivalent) with higher output — Noval base, not compatible","has_detail_page":true},{"type_number":"6P6S","reason":"Soviet 6V6GT equivalent (6П6С) with Octal base — similar electricals but different base","has_detail_page":true},{"type_number":"6V6","reason":"Similar electrical characteristics (power pentode/beam tetrode, ~4.5W output) but different base type — not pin-compatible","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Anode","function_code":"a","notes":null},{"pin_number":"2","function":"Screen Grid","function_code":"g2","notes":null},{"pin_number":"3","function":"Control Grid","function_code":"g1","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":"Cathode","function_code":"k","notes":null},{"pin_number":"7","function":"No Connection","function_code":"nc","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":"Beam Tetrode","tube_type_key":"beam_tetrode","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":"300","numeric_value":"300","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":"Va","display_name":"Anode Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"Vs","display_name":"Screen Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-12.5","numeric_value":"-12.5","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"45","numeric_value":"45","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"52000","numeric_value":"52000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"4.1","numeric_value":"4.1","unit":"mA/V","param_group":"typical_operating"},{"key":"Pout","display_name":"Output Power","value":"4.5","numeric_value":"4.5","unit":"W","param_group":"output"}]}],"synced_at":"2026-04-07T12:27:32.315Z"}