{"type_number":"E180CC","canonical_url":"https://tubeofile.com/tubes/E180CC","manufacturer":"Philips","tube_type_key":"small_signal_triode","tube_type_display_name":"Small Signal Triode","base_name":"Noval","description":"Special quality (SQ) double triode designed for use in computer circuits. Maintains emission characteristics after long periods of operation under cut-off conditions, making it suitable for flip-flop and bi-stable circuits. Indirectly heated with center-tapped heater for 6.3 V or 12.6 V operation.","is_directly_heated":false,"completeness":"high","notes":["Pin 9 is a heater center-tap, enabling 12.6 V / 200 mA series heater operation (pins 4 and 5 only). This differs from E80CC which uses pin 9 as an internal heater shield.","Designed for computer switching — not intended for circuits critical to hum, microphony, or noise. The datasheet explicitly states this limitation.","Maximum grid resistor depends on bias method: 0.5 MΩ with fixed bias, 1 MΩ with automatic (cathode) bias.","Two operating points specified: Va=150 V / Vg=-1.85 V (μ=46, gm=6.4 mA/V, ra=7.2 kΩ) and Va=100 V / Vg=-0.8 V (μ=50, gm=7.8 mA/V, ra=6.4 kΩ).","Life-tested at 10,000 hours under conditions: Vba=150 V, Vbg=150 V, Ra=2.6 kΩ, Rg=1.5 MΩ (Ig=100 μA), Vkf=200 V.","Originally introduced in 1954 by Philips. The 7062 is the American RETMA designation for the same tube."],"references":["https://frank.pocnet.net/sheets/009/e/E180CC.pdf","https://frank.pocnet.net/sheets/030/e/E180CC.pdf"],"source_urls":{"r_type":"https://www.r-type.org/exhib/abh0015.htm","tdsl":"https://tdsl.duncanamps.com/show.php?des=E180CC","radiomuseum":"https://www.radiomuseum.org/tubes/tube_e180cc.html"},"raw_equivalents":["7062","CV8431"],"equivalents":[],"similar":[{"type_number":"5965","reason":"Similar computer-grade twin triode on B9A with same pinout, but different heater current (0.45 A vs 0.4 A) and slightly different characteristics. Radiomuseum lists it as a different quality class, not a direct equivalent.","has_detail_page":true},{"type_number":"7044","reason":"RCA lists as similar to E180CC. Same B9A base and pinout, same mu (~46), but higher gm (9 vs 6.4 mA/V) and higher heater current (0.45A vs 0.4A)","has_detail_page":false}],"pins":[{"pin_number":"1","function":"Anode (triode 1)","function_code":"a1","notes":null},{"pin_number":"2","function":"Grid (triode 1)","function_code":"g1_1","notes":null},{"pin_number":"3","function":"Cathode (triode 1)","function_code":"k1","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 (triode 2)","function_code":"a2","notes":null},{"pin_number":"7","function":"Grid (triode 2)","function_code":"g1_2","notes":null},{"pin_number":"8","function":"Cathode (triode 2)","function_code":"k2","notes":null},{"pin_number":"9","function":"Heater Center-Tap","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":"0.4","numeric_value":"0.4","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Triode","tube_type_key":"small_signal_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"275","numeric_value":"275","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"2.0","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":"200","numeric_value":"200","unit":"V","param_group":"absolute_max"},{"key":"Rg_max","display_name":"Max Grid Resistor","value":"1","numeric_value":"1","unit":"MΩ","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"150","numeric_value":"150","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-1.85","numeric_value":"-1.85","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"8.5","numeric_value":"8.5","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"7200","numeric_value":"7200","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"6.4","numeric_value":"6.4","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"46","numeric_value":"46","unit":"—","param_group":"typical_operating"},{"key":"Rk","display_name":"Cathode Resistor (self-bias)","value":"220","numeric_value":"220","unit":"Ω","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"2.2","numeric_value":"2.2","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"3.5","numeric_value":"3.5","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"0.5","numeric_value":"0.5","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T12:37:25.071Z"}