{"type_number":"6S4P","canonical_url":"https://tubeofile.com/tubes/6S4P","manufacturer":"Svetlana","tube_type_key":"small_signal_triode","tube_type_display_name":"Small Signal Triode","base_name":"Noval","description":"Soviet high-frequency triode (6С4П) designed for amplifier and oscillator circuits at frequencies up to several hundred MHz. Noval (B9A) base. Compact design with low inter-electrode capacitances. Used in instrumentation and communications equipment.","is_directly_heated":false,"completeness":"high","notes":["6S4P is the Latin transliteration of the Cyrillic designation 6С4П.","Quality suffix variants (6S4P-EV, 6S4P-DR) exist — only the base designation is catalogued here.","Compact dimensions: 23 x 40 mm, weight approximately 15 g.","Designed for high-frequency applications — low inter-electrode capacitances."],"references":["https://tdsl.duncanamps.com/show.php?des=6S4P","https://www.radiomuseum.org/tubes/?tube=6S4P"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6S4P","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6s4p.html"},"raw_equivalents":[],"equivalents":[],"similar":[],"pins":[{"pin_number":"1","function":"Anode","function_code":"a","notes":null},{"pin_number":"2","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"3","function":"Cathode","function_code":"k","notes":null},{"pin_number":"4","function":"Heater","function_code":"h","notes":null},{"pin_number":"5","function":"Heater","function_code":"h","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":"Control Grid","function_code":"g1","notes":null},{"pin_number":"9","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":"0.3","numeric_value":"0.3","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Triode","tube_type_key":"small_signal_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"3.3","numeric_value":"3.3","unit":"W","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"150","numeric_value":"150","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-3","numeric_value":"-3","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"17","numeric_value":"17","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"2000","numeric_value":"2000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"15","numeric_value":"15","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"30","numeric_value":"30","unit":"—","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"1.2","numeric_value":"1.2","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"4.4","numeric_value":"4.4","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"0.6","numeric_value":"0.6","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T12:28:40.937Z"}