{"type_number":"5Ts4S","canonical_url":"https://tubeofile.com/tubes/5Ts4S","manufacturer":null,"tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"Octal","description":"Soviet full-wave vacuum rectifier (5Ц4С in Cyrillic). Indirectly heated, designed for power supply applications. Octal base. Often cited as a functional substitute for the 5Y3/5U4 family but with different electrical characteristics.","is_directly_heated":false,"completeness":"high","notes":["5Ц4С (5Ts4S) is the Cyrillic designation. The Latin transliteration is 5Ts4S.","Indirectly heated rectifier — cathode is heated by a separate filament element.","Often found in Soviet radio receivers and amplifier power supplies.","Despite being cited as a substitute for Western rectifiers like 5Y3, verify pinout and maximum ratings before substituting — the 5Ts4S has its own specific characteristics."],"references":["https://tdsl.duncanamps.com/show.php?des=5Ts4S","https://www.radiomuseum.org/tubes/?tube=5Ts4S"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=5Ts4S","radiomuseum":"https://www.radiomuseum.org/tubes/tube_5ts4s.html"},"raw_equivalents":["5Ц4С"],"equivalents":[],"similar":[{"type_number":"5C3S","reason":"Soviet directly-heated rectifier on same Octal base — higher current capability but different heating type","has_detail_page":true},{"type_number":"5Y3GT","reason":"Similar full-wave rectifier on Octal base but 5Y3 is directly heated and has higher voltage drop — not pin-compatible","has_detail_page":false},{"type_number":"5Y4G","reason":"Indirectly heated rectifier on Octal base — similar concept but verify pinout and ratings","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 2 (Plate 2)","function_code":"a2","notes":null},{"pin_number":"4","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"5","function":"Anode 1 (Plate 1)","function_code":"a1","notes":null},{"pin_number":"6","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"7","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"8","function":"Heater / Cathode","function_code":"h","notes":null}],"specs":[{"key":"Vh","display_name":"Heater Voltage","value":"5.0","numeric_value":"5","unit":"V","param_group":"heater"},{"key":"Ah","display_name":"Heater Current","value":"1.5","numeric_value":"1.5","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":"PIV","display_name":"Peak Inverse Voltage","value":"1500","numeric_value":"1500","unit":"V","param_group":"rectifier"},{"key":"Vdrop","display_name":"Voltage Drop (typical)","value":"25","numeric_value":"25","unit":"V","param_group":"rectifier"},{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"120","numeric_value":"120","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-08T07:50:42.913Z"}