{"type_number":"6Y6","canonical_url":"https://tubeofile.com/tubes/6Y6","manufacturer":"RCA","tube_type_key":"beam_tetrode","tube_type_display_name":"Beam Tetrode","base_name":"Octal","description":"Beam power amplifier having high power sensitivity and high power output at comparatively low DC supply voltages. Designed for audio output stages of radio receivers. Coated unipotentical cathode. Introduced in 1937, manufactured by RCA, Tung-Sol, GE, Westinghouse, and Raytheon.","is_directly_heated":false,"completeness":"high","notes":["Designed for low-voltage operation (200 V max on both anode and screen). Datasheet provides two sets of typical operating conditions: Va=135 V and Va=200 V.","Grid #1 circuit resistance: 0.1 MΩ max for fixed bias, 0.5 MΩ max for cathode (self) bias.","Grid #2 voltage rating depends on tube application: up to 200 V for screen-grid voltages up to 100 V; see Grid-No.2 Input Rating Chart for voltages between 100 and 200 V (per RCA data).","Pin 1 is no connection on glass-envelope types (6Y6G, 6Y6GA); on the original metal-envelope 6Y6 it connects to the shell.","Pin 8 connects to both the cathode and the internal beam-forming plates (which serve the suppressor function).","6Y6GA is the later straight-sided (GT-shape) glass version with identical electrical ratings to the 6Y6G."],"references":["https://frank.pocnet.net/sheets/127/6/6Y6G.pdf","https://frank.pocnet.net/sheets/049/6/6Y6GA.pdf"],"source_urls":{"r_type":"http://www.r-type.org/exhib/aad0065.htm","tdsl":"https://tdsl.duncanamps.com/show.php?des=6Y6G","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6y6g.html"},"raw_equivalents":["6Y6G","6Y6GA","6Y6GT","CV515","VT-168A"],"equivalents":[],"similar":[],"pins":[{"pin_number":"1","function":"No Connection (shell on metal type)","function_code":"nc","notes":null},{"pin_number":"2","function":"Heater","function_code":"h","notes":null},{"pin_number":"3","function":"Anode (Plate)","function_code":"a","notes":null},{"pin_number":"4","function":"Screen Grid (g2)","function_code":"g2","notes":null},{"pin_number":"5","function":"Control Grid (g1)","function_code":"g1","notes":null},{"pin_number":"6","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"7","function":"Heater","function_code":"h","notes":null},{"pin_number":"8","function":"Cathode & Beam-Forming Plates","function_code":"k","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":"1.25","numeric_value":"1.25","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":"200","numeric_value":"200","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":"12.5","numeric_value":"12.5","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"1.75","numeric_value":"1.75","unit":"W","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"180","numeric_value":"180","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"0.5","numeric_value":"0.5","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":"135","numeric_value":"135","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-14","numeric_value":"-14","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"66","numeric_value":"66","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"9","numeric_value":"9","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"18300","numeric_value":"18300","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"7.1","numeric_value":"7.1","unit":"mA/V","param_group":"typical_operating"},{"key":"Pout","display_name":"Output Power","value":"6","numeric_value":"6","unit":"W","param_group":"output"},{"key":"rl","display_name":"Load Impedance","value":"2600","numeric_value":"2600","unit":"Ω","param_group":"output"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.66","numeric_value":"0.66","unit":"pF","param_group":"capacitances"},{"key":"Cin","display_name":"Input Capacitance","value":"12","numeric_value":"12","unit":"pF","param_group":"capacitances"},{"key":"Cout","display_name":"Output Capacitance","value":"7.5","numeric_value":"7.5","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T12:30:24.547Z"}