{"type_number":"6W5-G","canonical_url":"https://tubeofile.com/tubes/6W5-G","manufacturer":"Ken-Rad","tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"Octal","description":"Indirectly-heated full-wave high-vacuum rectifier with coated unipotential cathode, originally designed for automobile-radio receivers. Ken-Rad documented it as electrically and mechanically interchangeable with the 6X5/6X5-G (same Octal pinout). Delivers up to ~100 mA of DC output from a 6.3 V/0.9 A heater.","is_directly_heated":false,"completeness":"high","notes":["Ken-Rad datasheet (RMA release #100, 11-1-36) explicitly states: 'The 6W5G is a glass tube equipped with an octal base and is interchangeable with the 6X5 and 6X5G.' — treat as a drop-in equivalent of the 6X5 family.","JEDEC base 6S: standard 6-pin Octal (pins 4 and 6 are unused). Same pinout as 6X5/6X5-G.","Datasheet states 100 mA maximum load current in full-wave operation at 350 V RMS per plate. The six-volt rectifier reference table lists 90 mA; the Ken-Rad datasheet value (100 mA) is used here.","Tube voltage drop of 24 V at full load is taken from the curated six-volt rectifier reference table (references/six_volt_rectifiers.json); the original Ken-Rad datasheet does not state it explicitly.","Heater-to-cathode insulation rated at 500 V DC — slightly higher than typical 6.3 V rectifiers (450 V) and reflects the automobile-receiver origin.","Automobile-radio heritage: in a 6 V car receiver the heater was powered from the battery/vibrator supply shared with all other tubes, which required a rugged, high-Vhk indirectly-heated cathode."],"references":["https://frank.pocnet.net/sheets/201/6/6W5G.pdf","https://www.radiomuseum.org/tubes/tube_6w5g.html"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6W5G","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6w5g.html"},"raw_equivalents":["6X5","6X5G","6X5GT"],"equivalents":[{"type_number":"6X5","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"6AX5GT","reason":"Same Octal 6S base and pinout, but higher current rating (125 mA DC vs 100 mA) and higher heater current (1.2 A vs 0.9 A). Electrically similar rather than an exact drop-in.","has_detail_page":false},{"type_number":"6X4","reason":"Same function (full-wave rectifier, 6.3 V heater) but B7G miniature base — not pin-compatible with Octal.","has_detail_page":true}],"pins":[{"pin_number":"1","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"2","function":"Heater","function_code":"h","notes":null},{"pin_number":"3","function":"Anode 1 (Plate 1)","function_code":"a1","notes":null},{"pin_number":"4","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"5","function":"Anode 2 (Plate 2)","function_code":"a2","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","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":"0.9","numeric_value":"0.9","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Rectifier","tube_type_key":"rectifier","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"350","numeric_value":"350","unit":"V","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"500","numeric_value":"500","unit":"V","param_group":"absolute_max"},{"key":"PIV","display_name":"Peak Inverse Voltage","value":"1250","numeric_value":"1250","unit":"V","param_group":"rectifier"},{"key":"Vdrop","display_name":"Voltage Drop (typical)","value":"24","numeric_value":"24","unit":"V","param_group":"rectifier"},{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"100","numeric_value":"100","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-09T05:17:16.124Z"}