{"type_number":"6080","canonical_url":"https://tubeofile.com/tubes/6080","manufacturer":"RCA","tube_type_key":"power_triode","tube_type_display_name":"Power Triode","base_name":"Octal","description":"Low-mu twin power triode with separate cathodes, ruggedized version of the 6AS7G. Designed as a series pass regulator tube in DC power supplies, for servo applications, and as a booster triode. Also widely used in OTL headphone amplifiers.","is_directly_heated":false,"completeness":"high","notes":["Automatic (cathode) bias is recommended by Philips. With fixed bias, the anode circuit must contain a protective resistance to provide a minimum voltage drop of 15V DC under normal operating conditions.","When two or more sections are paralleled at dissipations approaching rated maximum, separate anode and cathode resistors must be used to advance load sharing.","Grid circuit resistance limit differs by bias method: 1.0 MΩ for cathode bias, 0.1 MΩ for fixed bias (Philips datasheet).","The Philips datasheet specifies two typical operating points: Va=100V with Rk=300Ω (Ia=100mA, gm=6.5 mA/V, ra=300Ω) and Vba=135V with Rk=250Ω (Ia=125mA, gm=7.0 mA/V, ra=280Ω). The second is the regulator test condition at absolute limits of Ia and Wa.","6N13S (6Н13С) is the Soviet equivalent; electrically compatible but may have slightly different capacitance values.","Registered December 4, 1951 (Electron Tube Registration List 1039). The 6080 was intended as an improved, ruggedized version of the 6AS7G with tighter parameter tolerances for military and industrial voltage regulator service."],"references":["https://frank.pocnet.net/sheets/030/6/6080.pdf"],"source_urls":{"r_type":"https://www.r-type.org/exhib/aaa0725.htm","tdsl":"https://tdsl.duncanamps.com/show.php?des=6080","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6080.html"},"raw_equivalents":["6AS7","6AS7G","6AS7GA","6080WA","6080WB","6520","6N13S","6N13P","6H13C","CV2523","CV2984","CV10322","CK6080","E6080","ECC230","A1834","A4475","EI834","RK6080","7802","6N5S"],"equivalents":[{"type_number":"6AS7","equivalence_type":"direct","notes":null},{"type_number":"6AS7G","equivalence_type":"direct","notes":null},{"type_number":"6H13C","equivalence_type":"direct","notes":null},{"type_number":"6N13P","equivalence_type":"direct","notes":null},{"type_number":"6N5S","equivalence_type":"direct","notes":null},{"type_number":"7802","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"5998","reason":"Same Octal pinout but approximately double the mu (5.4 vs 2.0) and gm (15.5 vs 7.0 mA/V) — changes bias points, not a drop-in","has_detail_page":true},{"type_number":"6336","reason":"Successor design with higher ratings (Va_max 400V, Pa_max 30W) — not a drop-in due to different maximum ratings and potential for over-dissipation in 6080 circuits","has_detail_page":false},{"type_number":"6533","reason":"RCA lists as similar — higher-current variant, not a drop-in","has_detail_page":true},{"type_number":"7105","reason":"RCA lists as similar — verify ratings before substituting","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Grid (triode 2)","function_code":"g1_2","notes":null},{"pin_number":"2","function":"Anode (triode 2)","function_code":"a2","notes":null},{"pin_number":"3","function":"Cathode (triode 2)","function_code":"k2","notes":null},{"pin_number":"4","function":"Grid (triode 1)","function_code":"g1_1","notes":null},{"pin_number":"5","function":"Anode (triode 1)","function_code":"a1","notes":null},{"pin_number":"6","function":"Cathode (triode 1)","function_code":"k1","notes":null},{"pin_number":"7","function":"Heater","function_code":"h","notes":null},{"pin_number":"8","function":"Heater","function_code":"h","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":"2.5","numeric_value":"2.5","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Triode","tube_type_key":"power_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"250","numeric_value":"250","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"13","numeric_value":"13","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"125","numeric_value":"125","unit":"mA","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"1.0","numeric_value":"1","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-30","numeric_value":"-30","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"100","numeric_value":"100","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"300","numeric_value":"300","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"6.5","numeric_value":"6.5","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"2.0","numeric_value":"2","unit":"—","param_group":"typical_operating"},{"key":"Rk","display_name":"Cathode Resistor (self-bias)","value":"300","numeric_value":"300","unit":"Ω","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"8.6","numeric_value":"8.6","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"5.5","numeric_value":"5.5","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"2.5","numeric_value":"2.5","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T19:01:41.252Z"}