{"type_number":"E180F","canonical_url":"https://tubeofile.com/tubes/E180F","manufacturer":"Philips","tube_type_key":"ss_pentode","tube_type_display_name":"Small Signal Pentode","base_name":"Noval","description":"Special quality (SQ) high-slope RF pentode for wideband amplifiers in professional equipment — telephone carrier systems, radar, and measuring instruments. Very high transconductance (16.5 mA/V) in a compact Noval envelope.","is_directly_heated":false,"completeness":"high","notes":["Pins 1, 3, and 6 are all cathode connections. Pins 1 and 3 are interconnected. Pin 6 is floating during capacitance measurements.","In triode connection, Va_max is limited to 175 V (Vg2 max) since g2 is strapped to anode.","Input conductance at 100 MHz: 500 µA/V — relevant for RF amplifier design.","Vibration proof: 2.5 g at 50 Hz for 96 hours; impact acceleration approx. 300 g.","The 190 V operating point (first column) is recommended due to smaller parameter spread.","This is NOT related to the EF86/EF806S — it is a completely different high-slope RF pentode, not a low-noise AF type."],"references":["https://tube-data.com/sheets/030/e/E180F.pdf"],"source_urls":{"r_type":"http://www.r-type.org/exhib/aaa0009.htm","tdsl":null,"radiomuseum":null},"raw_equivalents":["6688","5A/170K","CV3998","EF861","E186F","6J9P"],"equivalents":[{"type_number":"6J9P","equivalence_type":"direct","notes":null},{"type_number":"E186F","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"E280F","reason":"Same Noval pinout family; higher gm (26 vs 16.5 mA/V); pin 6 differs (ic on E280F vs k on E180F) — not a pin-for-pin drop-in","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Cathode","function_code":"k","notes":null},{"pin_number":"2","function":"Control Grid","function_code":"g1","notes":null},{"pin_number":"3","function":"Cathode (connected to pin 1)","function_code":"k","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":"Cathode (internal)","function_code":"k","notes":null},{"pin_number":"7","function":"Anode","function_code":"a","notes":null},{"pin_number":"8","function":"Suppressor Grid (shield)","function_code":"g3","notes":null},{"pin_number":"9","function":"Screen Grid","function_code":"g2","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":"Pentode","tube_type_key":"ss_pentode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"210","numeric_value":"210","unit":"V","param_group":"absolute_max"},{"key":"Vs_max","display_name":"Screen Voltage (max)","value":"175","numeric_value":"175","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"3.0","numeric_value":"3","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"0.9","numeric_value":"0.9","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"25","numeric_value":"25","unit":"mA","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"60","numeric_value":"60","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"0.5","numeric_value":"0.5","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"190","numeric_value":"190","unit":"V","param_group":"typical_operating"},{"key":"Vs","display_name":"Screen Voltage (typical)","value":"160","numeric_value":"160","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-9","numeric_value":"-9","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"13","numeric_value":"13","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"3.3","numeric_value":"3.3","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"90000","numeric_value":"90000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"16.5","numeric_value":"16.5","unit":"mA/V","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"<0.03","numeric_value":null,"unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"11.1","numeric_value":"11.1","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"<0.1","numeric_value":null,"unit":"pF","param_group":"capacitances"},{"key":"Cin","display_name":"Input Capacitance","value":"7.5","numeric_value":"7.5","unit":"pF","param_group":"capacitances"},{"key":"Cout","display_name":"Output Capacitance","value":"3.0","numeric_value":"3","unit":"pF","param_group":"capacitances"},{"key":null,"display_name":"Req (H.F.)","value":"460","numeric_value":"460","unit":"Ω","param_group":null},{"key":null,"display_name":"μg2g1","value":"50","numeric_value":"50","unit":"—","param_group":null}]},{"section_number":2,"section_label":"Triode Strapped","tube_type_key":"small_signal_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"175","numeric_value":"175","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"3.0","numeric_value":"3","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"25","numeric_value":"25","unit":"mA","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"0.5","numeric_value":"0.5","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"160","numeric_value":"160","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-9","numeric_value":"-9","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"16.5","numeric_value":"16.5","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"2400","numeric_value":"2400","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"21","numeric_value":"21","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"50","numeric_value":"50","unit":"—","param_group":"typical_operating"},{"key":"Rk","display_name":"Cathode Resistor (self-bias)","value":"620","numeric_value":"620","unit":"Ω","param_group":"typical_operating"},{"key":null,"display_name":"Req (H.F.)","value":"225","numeric_value":"225","unit":"Ω","param_group":null}]}],"synced_at":"2026-04-22T14:42:39.571Z"}