{"type_number":"807","canonical_url":"https://tubeofile.com/tubes/807","manufacturer":"RCA","tube_type_key":"beam_tetrode","tube_type_display_name":"Beam Tetrode","base_name":"UX5","description":"Beam power tube designed for use as an RF power amplifier and AF power amplifier/modulator. Useful at frequencies up to 125 MHz. Features a top-cap anode connection and 5-pin UX base.","is_directly_heated":false,"completeness":"medium","notes":["The anode connects via a top cap (JETEC No. C1-1), not through the base pins. This is essential for high-voltage insulation and RF use.","Cathode bias is not recommended for Class AB2 operation; fixed bias only. For Class AB1 pentode, Rg_max is 0.1 MΩ with fixed bias and 0.5 MΩ with cathode bias.","Datasheet operating values for AF push-pull configurations are given for 2 tubes; per-tube output is half the stated value.","The 807 was originally designed for RF transmitter service. Audio applications are secondary, and RCA did not initially publish AF push-pull data.","Significant quality variation exists among WWII-era manufacturers. British service designations (VT60, CV124) may have different actual ratings based on manufacturer.","The 6L6/6BG6 family shares similar electrical characteristics but uses an octal base with internal anode connection — not pin-compatible.","G-807 (Г-807) is the Russian designation equivalent (tubemaze.info Russian equivalents).","Philips interchange guide cross-references QE06/50 as replacement (CV124)."],"references":["https://frank.pocnet.net/sheets/084/8/807.pdf","https://r-type.org/pdfs/807.pdf"],"source_urls":{"r_type":"https://www.r-type.org/exhib/aaa0540.htm","tdsl":"https://tdsl.duncanamps.com/show.php?des=807","radiomuseum":"https://www.radiomuseum.org/tubes/tube_807.html"},"raw_equivalents":["5933","807W","8018","CV124","CV1060","CV1364","CV1374","CV1572","QV05-25","RK39","VT-100","VT-100A","VT60A","HY61","ATS25","ATS25A","QE06/50","WL807","VT60","807WA","G-807","5933-WA","4Y25","5B/254A"],"equivalents":[{"type_number":"5B/254A","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"1625","reason":"Military 12.6V heater version on UX7 base — same electricals but different heater voltage and base, not pin-compatible","has_detail_page":true},{"type_number":"5932","reason":"RCA lists as similar — ruggedized Octal-base version of 6L6 family, different base type (Octal vs UX5)","has_detail_page":false},{"type_number":"6BG6","reason":"Similar electricals but Octal base with internal anode","has_detail_page":true},{"type_number":"6L6","reason":"Similar electricals but Octal base with internal anode — 807 has top-cap anode on UX5 base","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Heater","function_code":"h","notes":null},{"pin_number":"2","function":"Screen Grid (g2)","function_code":"g2","notes":null},{"pin_number":"3","function":"Control Grid (g1)","function_code":"g1","notes":null},{"pin_number":"4","function":"Cathode","function_code":"k","notes":null},{"pin_number":"5","function":"Heater","function_code":"h","notes":null},{"pin_number":"TC","function":"Anode (top cap)","function_code":"a","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":"0.9","numeric_value":"0.9","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":"750","numeric_value":"750","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":"25","numeric_value":"25","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"3.5","numeric_value":"3.5","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"120","numeric_value":"120","unit":"mA","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"135","numeric_value":"135","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"0.1","numeric_value":"0.1","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"500","numeric_value":"500","unit":"V","param_group":"typical_operating"},{"key":"Vs","display_name":"Screen Voltage (typical)","value":"300","numeric_value":"300","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-32","numeric_value":"-32","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"44","numeric_value":"44","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"1","numeric_value":"1","unit":"mA","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"6.0","numeric_value":"6","unit":"mA/V","param_group":"typical_operating"},{"key":"Pout","display_name":"Output Power","value":"46","numeric_value":"46","unit":"W","param_group":"output"},{"key":"rl","display_name":"Load Impedance","value":"8200","numeric_value":"8200","unit":"Ω","param_group":"output"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.2","numeric_value":"0.2","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","numeric_value":"7","unit":"pF","param_group":"capacitances"},{"key":"freq","display_name":"Max Operating Frequency","value":"125","numeric_value":"125","unit":"MHz","param_group":"noise_rf"}]},{"section_number":2,"section_label":"Triode Strapped","tube_type_key":"power_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"400","numeric_value":"400","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"50","numeric_value":"50","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":"Va","display_name":"Anode Voltage (typical)","value":"400","numeric_value":"400","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-45","numeric_value":"-45","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"32","numeric_value":"32","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"3000","numeric_value":"3000","unit":"Ω","param_group":"typical_operating"},{"key":"Pout","display_name":"Output Power","value":"15","numeric_value":"15","unit":"W","param_group":"output"},{"key":"rl","display_name":"Load Impedance","value":"3000","numeric_value":"3000","unit":"Ω","param_group":"output"}]}],"synced_at":"2026-04-07T19:05:42.729Z"}