{"type_number":"6AY11","canonical_url":"https://tubeofile.com/tubes/6AY11","manufacturer":"RCA","tube_type_key":"compound","tube_type_display_name":"Compound (multi-section)","base_name":"Duodekal","description":"Twin diode–high-mu twin triode compound tube in a 12-pin Duodecar envelope. Designed for AM/FM radio and TV receiver service. Two independent diode sections (detector/AGC) and two high-mu triode sections (preamplifier/voltage amplifier) share a common heater. Indirectly heated.","is_directly_heated":false,"completeness":"high","notes":["Each triode unit: μ=100, ra≈52.7kΩ, gm=1900µmhos. Class A1 operating point: Va=250V, Vg=−2V, Ia=1.2mA.","Each diode unit: max plate current 5mA DC; instantaneous plate current 18mA at 5V plate voltage.","Heater-to-cathode voltage: max 200V with heater negative; max 200V with heater positive (DC component must not exceed 100V).","Capacitance data (without external shield): diode Pd–(Kd,H)=2.0pF, Kd–(Pd,H)=5.5pF; triode grid-to-plate=2.2pF, input=2.0pF, output=0.22pF; cross-section Gt–Pd=0.08pF max, Gt1–Gt2=0.01pF max, Pt1–Pt2=0.48pF."],"references":["https://frank.pocnet.net/sheets/049/6/6AY11.pdf","https://tdsl.duncanamps.com/show.php?des=6AY11"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6AY11","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6ay11.html"},"raw_equivalents":[],"equivalents":[],"similar":[],"pins":[{"pin_number":"1","function":"Heater","function_code":"h","notes":null},{"pin_number":"2","function":"Cathode of Diode Unit No.2","function_code":"k2","notes":null},{"pin_number":"3","function":"Plate of Diode Unit No.2","function_code":"a2","notes":null},{"pin_number":"4","function":"Cathode of Triode Unit No.2","function_code":"k2","notes":null},{"pin_number":"5","function":"Grid of Triode Unit No.2","function_code":"g1_2","notes":null},{"pin_number":"6","function":"Plate of Triode Unit No.2","function_code":"a2","notes":null},{"pin_number":"7","function":"Plate of Triode Unit No.1","function_code":"a1","notes":null},{"pin_number":"8","function":"Grid of Triode Unit No.1","function_code":"g1_1","notes":null},{"pin_number":"9","function":"Cathode of Triode Unit No.1","function_code":"k1","notes":null},{"pin_number":"10","function":"Plate of Diode Unit No.1","function_code":"a1","notes":null},{"pin_number":"11","function":"Cathode of Diode Unit No.1","function_code":"k1","notes":null},{"pin_number":"12","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":"0.690","numeric_value":"0.69","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Triode (each unit)","tube_type_key":"small_signal_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"330","numeric_value":"330","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"1","numeric_value":"1","unit":"W","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"200","numeric_value":"200","unit":"V","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-2.0","numeric_value":"-2","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"1.2","numeric_value":"1.2","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"52700","numeric_value":"52700","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"1.9","numeric_value":"1.9","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"100","numeric_value":"100","unit":"—","param_group":"typical_operating"}]},{"section_number":2,"section_label":"Diode (each unit)","tube_type_key":"diode","specs":[{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"5","numeric_value":"5","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-08T07:51:48.308Z"}