{"type_number":"EL95","canonical_url":"https://tubeofile.com/tubes/EL95","manufacturer":"Philips","tube_type_key":"power_pentode","tube_type_display_name":"Power Pentode","base_name":"Noval","description":"Small output pentode for car radio and portable receivers; indirectly heated. Developed by Philips, introduced 1957. Designed for use in car radios — can operate with parallel AC supply or two tubes in series on a 12 V battery. Miniature (Noval) base.","is_directly_heated":false,"completeness":"high","notes":["Designed for car radio use — heater can be operated in parallel from AC, or two tubes in series from a 12 V battery.","Heater current is only 200 mA (1.26 W heater power), making it very efficient for battery operation.","μg2g1 = 17; cutoff voltage (at Ig1 = +0.3 μA) is -1.3 V at the typical operating point.","Class A at Va=200V: Ia=23 mA, Rk=230 Ω, Pout=2.3 W at 12% THD; at Va=250V: Ia=24 mA, Rk=320 Ω, Pout=3.0 W at 12% THD.","Class AB push-pull (2 tubes) at Va=250V, Raa=10 kΩ delivers 7 W.","Class B push-pull (2 tubes) at Va=250V, Raa=10 kΩ delivers 6.5 W.","Triode-strapped data from Schlangen (2009): μ = 15, gm = 5 mA/V, ra = 3 kΩ."],"references":["https://frank.pocnet.net/sheets/030/e/EL95.pdf"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=EL95","radiomuseum":"https://www.radiomuseum.org/tubes/tube_el95.html"},"raw_equivalents":["6DL5"],"equivalents":[],"similar":[{"type_number":"EL84","reason":"Higher-powered Noval pentode (12 W vs 6 W Pa_max) — not interchangeable","has_detail_page":true},{"type_number":"EL85","reason":"Similar low-power Noval pentode — different characteristics, not interchangeable","has_detail_page":true},{"type_number":"PL95","reason":"Series-heater version (300 mA) — same Noval base and pinout but different heater voltage. Not interchangeable.","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Suppressor Grid (g3, internally connected to cathode)","function_code":"g3","notes":null},{"pin_number":"2","function":"Screen Grid (g2)","function_code":"g2","notes":null},{"pin_number":"3","function":"Cathode","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":"Anode","function_code":"a","notes":null},{"pin_number":"7","function":"Control Grid (g1)","function_code":"g1","notes":null},{"pin_number":"8","function":"Internal Connection","function_code":"ia","notes":null},{"pin_number":"9","function":"Internal Connection","function_code":"ia","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":"0.2","numeric_value":"0.2","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Pentode","tube_type_key":"power_pentode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Vs_max","display_name":"Screen Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"6","numeric_value":"6","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"35","numeric_value":"35","unit":"mA","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"Vs","display_name":"Screen Voltage (typical)","value":"250","numeric_value":"250","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":"24","numeric_value":"24","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"4.5","numeric_value":"4.5","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"80000","numeric_value":"80000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"5","numeric_value":"5","unit":"mA/V","param_group":"typical_operating"},{"key":"Rk","display_name":"Cathode Resistor (self-bias)","value":"320","numeric_value":"320","unit":"Ω","param_group":"typical_operating"},{"key":"Pout","display_name":"Output Power","value":"3","numeric_value":"3","unit":"W","param_group":"output"},{"key":"rl","display_name":"Load Impedance","value":"10000","numeric_value":"10000","unit":"Ω","param_group":"output"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.2","numeric_value":"0.2","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"5.3","numeric_value":"5.3","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"3.5","numeric_value":"3.5","unit":"pF","param_group":"capacitances"},{"key":null,"display_name":"μg2g1","value":"17","numeric_value":"17","unit":"—","param_group":null}]},{"section_number":2,"section_label":"Triode Strapped","tube_type_key":"power_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"300","numeric_value":"300","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"6","numeric_value":"6","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"35","numeric_value":"35","unit":"mA","param_group":"absolute_max"},{"key":"ra","display_name":"Anode Resistance","value":"3000","numeric_value":"3000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"5","numeric_value":"5","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"15","numeric_value":"15","unit":"—","param_group":"typical_operating"}]}],"synced_at":"2026-04-07T12:47:10.350Z"}