{"type_number":"6Z3","canonical_url":"https://tubeofile.com/tubes/6Z3","manufacturer":null,"tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"UX4","description":"Indirectly heated half-wave high-vacuum rectifier with coated unipotential cathode. Designed for use in AC/DC receivers and small power supplies. Electrically identical to the 1-V, which it superseded in the RCA numbering scheme.","is_directly_heated":false,"completeness":"high","notes":["The 6Z3 is the renumbered version of the 1-V under the 6-series heater voltage naming convention. Electrically and physically identical.","Half-wave rectifier — two tubes required for full-wave rectification, or four for bridge configuration.","When a filter-input condenser larger than 40 µF is used, additional plate-supply impedance may be required to limit peak plate current to 270 mA.","Heater voltage must not fluctuate beyond 6.3V +/- 10% (max 7.5V) under any operating condition.","Tube voltage drop (Vdrop) is not stated as a discrete figure in the RCA 1-V datasheet. Derived from the Average Plate Characteristic curve (92C-5332R1, Ef=6.3V) at the maximum DC output current of 45 mA, where plate voltage reads approximately 10 V."],"references":["https://frank.pocnet.net/sheets/049/1/1V.pdf","https://www.radiomuseum.org/tubes/tube_6z3.html"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6Z3","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6z3.html"},"raw_equivalents":["1-V","AD","CV1999"],"equivalents":[{"type_number":"1-V","equivalence_type":"direct","notes":null}],"similar":[],"pins":[{"pin_number":"1","function":"Heater","function_code":"h","notes":null},{"pin_number":"2","function":"Plate (Anode)","function_code":"a","notes":null},{"pin_number":"3","function":"Cathode","function_code":"k","notes":null},{"pin_number":"4","function":"Heater","function_code":"h","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":"Rectifier (half-wave)","tube_type_key":"rectifier","specs":[{"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":"1000","numeric_value":"1000","unit":"V","param_group":"rectifier"},{"key":"Vac_max","display_name":"AC Plate Voltage (RMS, max)","value":"325","numeric_value":"325","unit":"V","param_group":"rectifier"},{"key":"Vdrop","display_name":"Voltage Drop (typical)","value":"10","numeric_value":"10","unit":"V","param_group":"rectifier"},{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"45","numeric_value":"45","unit":"mA","param_group":"rectifier"},{"key":"Ia_peak","display_name":"Peak Anode Current (surge)","value":"270","numeric_value":"270","unit":"mA","param_group":"rectifier"},{"key":"Rs_min","display_name":"Min Series Resistance (C-input)","value":"75","numeric_value":"75","unit":"Ω","param_group":"rectifier"}]}],"synced_at":"2026-04-09T05:17:29.200Z"}