{"type_number":"6CJ3","canonical_url":"https://tubeofile.com/tubes/6CJ3","manufacturer":"RCA","tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"Novar","description":"Half-wave vacuum rectifier of the Novar type with diffusion-bonded coated unipotential cathode, designed for use as a damper diode in color-TV horizontal-deflection circuits. RCA design, dated December 1968.","is_directly_heated":false,"completeness":"high","notes":["Small-Button Novar 9-Pin base with exhaust tip (JEDEC E9-89), terminal diagram JEDEC 9HP.","The diffusion-bonded cathode virtually eliminates plate-to-cathode arcing caused by emissive particles being pulled from the cathode by the high electrostatic field — a major failure mechanism in damper diodes.","Socket terminals 1, 3, 6, and 8 should not be used as tie points. It is recommended that the socket tabs be removed to reduce arc-over possibility and minimize leakage.","PIV rating of 5500V applies when the voltage pulse duration does not exceed 15% of one horizontal scanning cycle (10 µs in a 525-line, 30-frame system).","Maximum heater-cathode voltage is very high: peak +300V/-5500V, average +100V/-900V.","Widely used in DIY audio power supplies as a high-voltage rectifier. Leben CS-600 amplifier uses this tube type."],"references":["https://frank.pocnet.net/sheets/049/6/6CJ3.pdf"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6CJ3","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6cj3.html"},"raw_equivalents":["6CH3"],"equivalents":[],"similar":[{"type_number":"6CG3","reason":"Similar half-wave damper diode with same ratings but Duodecar 12-pin base — not pin-compatible","has_detail_page":true},{"type_number":"6CM3","reason":"Novar damper diode with higher ratings (2.5A heater, 12W Pa, 400mA Ia) — higher-rated substitute, verify pin-for-pin compatibility","has_detail_page":false},{"type_number":"6DN3","reason":"Novar damper diode with higher ratings (equivalent to 6CM3) — higher-rated substitute, verify pin-for-pin compatibility","has_detail_page":false}],"pins":[{"pin_number":"1","function":"Do Not Use","function_code":"ic","notes":null},{"pin_number":"2","function":"Plate","function_code":"a","notes":null},{"pin_number":"3","function":"Do Not Use","function_code":"ic","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":"Do Not Use","function_code":"ic","notes":null},{"pin_number":"7","function":"Plate","function_code":"a","notes":null},{"pin_number":"8","function":"Do Not Use","function_code":"ic","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":"1.8","numeric_value":"1.8","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Damper Diode","tube_type_key":"rectifier","specs":[{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"6.5","numeric_value":"6.5","unit":"W","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"5500","numeric_value":"5500","unit":"V","param_group":"absolute_max"},{"key":"PIV","display_name":"Peak Inverse Voltage","value":"5500","numeric_value":"5500","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":"350","numeric_value":"350","unit":"mA","param_group":"rectifier"},{"key":"Ia_peak","display_name":"Peak Anode Current (surge)","value":"2100","numeric_value":"2100","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-08T07:52:24.570Z"}