{"type_number":"AZ11N","canonical_url":"https://tubeofile.com/tubes/AZ11N","manufacturer":"Philips","tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"P8A","description":"Full-wave vacuum rectifier with 4 V indirectly-heated cathode. Side-contact base (G8A/P8A). The 'N' suffix indicates a revised version. Designed for power supply applications in European AC mains receivers with 4 V heater transformers. The AZ11 is the 4 V heater version of the EZ11/AZ1.","is_directly_heated":false,"completeness":"high","notes":["The 'N' suffix indicates a revised/improved version of the AZ11.","For characteristics and curves of the AZ11, see AZ1 (per Philips datasheet).","Full-wave rectifier — two anodes, common cathode.","4 V heater, indirect heating.","Valve_Equivalents lists this as 'Double Diode' on G8A base.","Peak Inverse Voltage is not explicitly stated in the Telefunken AZ11N datasheet; PIV=990 V is derived from the standard full-wave capacitor-input relation PIV = 2 × √2 × Va_max (350 Vrms). Matches the convention used for AZ12, UU4, UU5, EZ41 in this repo.","Vdrop=20 V is read from the AZ1 single-plate I/V characteristic (Philips datasheet Abb. 3, Ia per anode vs Va — AZ11N shares the AZ1 curve per Philips handbook note 'For characteristics and curves of the AZ11, see AZ1') at 32.5 mA per plate (= Idc_max 65 mA / 2 for full-wave). The datasheet does not state a discrete Vdrop value."],"references":["https://frank.pocnet.net/sheets/030/a/AZ11.pdf"],"source_urls":{"r_type":null,"tdsl":null,"radiomuseum":"https://www.radiomuseum.org/tubes/tube_az11n.html"},"raw_equivalents":["AZ11"],"equivalents":[{"type_number":"AZ11","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"AZ12","reason":"Related 4 V rectifier with different ratings","has_detail_page":true},{"type_number":"AZ31","reason":"Higher-current 4 V rectifier — see AZ1 data for curves","has_detail_page":true},{"type_number":"EZ11","reason":"6.3 V heater version — different heater voltage, not interchangeable","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Anode 1","function_code":"a1","notes":null},{"pin_number":"2","function":"Anode 2","function_code":"a2","notes":null},{"pin_number":"3","function":"Heater","function_code":"h","notes":null},{"pin_number":"4","function":"Heater","function_code":"h","notes":null},{"pin_number":"5","function":"Cathode","function_code":"k","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":"No Connection","function_code":"nc","notes":null}],"specs":[{"key":"Vh","display_name":"Heater Voltage","value":"4","numeric_value":"4","unit":"V","param_group":"heater"},{"key":"Ah","display_name":"Heater Current","value":"1.1","numeric_value":"1.1","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":"990","numeric_value":"990","unit":"V","param_group":"rectifier"},{"key":"Vdrop","display_name":"Voltage Drop (typical)","value":"20","numeric_value":"20","unit":"V","param_group":"rectifier"},{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"65","numeric_value":"65","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-09T05:18:04.303Z"}