{"type_number":"6U10","canonical_url":"https://tubeofile.com/tubes/6U10","manufacturer":null,"tube_type_key":"compound","tube_type_display_name":"Compound (multi-section)","base_name":"Compactron","description":"Triple triode in Compactron 12-pin (Duodecar) construction. Units No.1 and No.3 are medium-mu triodes, and Unit No.2 is a high-mu triode. Designed for amplifier applications in television receivers.","is_directly_heated":false,"completeness":"high","notes":["Requires Duodecar 12-contact socket. Basing designation 12FE.","Unit No.2 (high-mu section) has a maximum Rg of 0.5 MΩ for fixed-bias operation; this can increase to 1 MΩ provided plate-supply voltage and load resistance are such that plate dissipation does not exceed 0.5 W.","Maximum heater-cathode voltage: +/-275 V (peak) for Units 1 and 3; +/-200 V (peak) for Unit 2.","Maximum average cathode current is 20 mA per unit for Units 1 and 3 (no limit specified separately for Unit 2 — see max dissipation of 1 W).","Heater warm-up time (average) is 11 seconds.","No substitutes listed in TDSL or Brans. The 6U10 is a specialised TV compound type with no direct equivalents."],"references":["https://frank.pocnet.net/sheets/084/6/6U10.pdf"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6U10","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6u10.html"},"raw_equivalents":[],"equivalents":[],"similar":[],"pins":[{"pin_number":"1","function":"Heater","function_code":"h","notes":null},{"pin_number":"2","function":"Heater","function_code":"h","notes":null},{"pin_number":"3","function":"Cathode (Unit No.3)","function_code":"k","notes":null},{"pin_number":"4","function":"Cathode (Unit No.1)","function_code":"k1","notes":null},{"pin_number":"5","function":"Plate (Unit No.2)","function_code":"a2","notes":null},{"pin_number":"6","function":"Grid (Unit No.2)","function_code":"g1_2","notes":null},{"pin_number":"7","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"8","function":"Grid (Unit No.1)","function_code":"g1_1","notes":null},{"pin_number":"9","function":"Plate (Unit No.1)","function_code":"a1","notes":null},{"pin_number":"10","function":"Plate (Unit No.3)","function_code":"a","notes":null},{"pin_number":"11","function":"Cathode (Unit No.2)","function_code":"k2","notes":null},{"pin_number":"12","function":"Grid (Unit No.3)","function_code":"g1","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":"0.6","numeric_value":"0.6","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Medium-Mu Triode (Unit No.1)","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":"2","numeric_value":"2","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"20","numeric_value":"20","unit":"mA","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"275","numeric_value":"275","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"2.2","numeric_value":"2.2","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"200","numeric_value":"200","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-6","numeric_value":"-6","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"9.6","numeric_value":"9.6","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"7700","numeric_value":"7700","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"2.3","numeric_value":"2.3","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"17.5","numeric_value":"17.5","unit":"—","param_group":"typical_operating"}]},{"section_number":2,"section_label":"High-Mu Triode (Unit No.2)","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":"Rg_max","display_name":"Max Grid 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Voltage","value":"-6","numeric_value":"-6","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"9.6","numeric_value":"9.6","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"7700","numeric_value":"7700","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"2.3","numeric_value":"2.3","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"17.5","numeric_value":"17.5","unit":"—","param_group":"typical_operating"}]}],"synced_at":"2026-04-07T12:29:42.573Z"}