{"type_number":"6DE7","canonical_url":"https://tubeofile.com/tubes/6DE7","manufacturer":"Tung-Sol","tube_type_key":"compound","tube_type_display_name":"Compound (multi-section)","base_name":"Noval","description":"Dissimilar double triode with medium-mu and low-mu sections in 9-pin miniature construction. Section #1 (medium-mu) intended for use as a vertical deflection oscillator. Section #2 (low-mu) designed for use as a vertical deflection amplifier in television receivers.","is_directly_heated":false,"completeness":"high","notes":["Dissimilar dual triode: Section #1 (medium-mu, pins 5/6/7/8) is intended as vertical deflection oscillator; Section #2 (low-mu, pins 1/2/3/9) is intended as vertical deflection amplifier.","Except for heater ratings and heater warm-up time, the 6DE7 is identical to the 10DE7 and 13DE7 (Tung-Sol datasheet).","Section #2 is identical to section #2 of the 6DR7 (Tung-Sol datasheet).","Pin 2 and Pin 3 are both connected to the control grid of Unit No.2 (dual grid pins).","Heater positive with respect to cathode must not exceed 100V DC component."],"references":["https://frank.pocnet.net/sheets/127/6/6DE7.pdf"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6DE7","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6de7.html"},"raw_equivalents":["10DE7","13DE7","6DA7"],"equivalents":[{"type_number":"6DA7","equivalence_type":"direct","notes":null}],"similar":[{"type_number":"6DN7","reason":"Brans cross-lists in same group. Octal (8BD) base. Both sections have different mu values (22.5/15.4 vs 17.5/6.0). Not a drop-in.","has_detail_page":true},{"type_number":"6DR7","reason":"Same Noval 9HF pinout. Section #2 identical per Tung-Sol datasheet, but Section #1 differs significantly (6DR7 mu=68 vs 6DE7 mu=17.5). Not a drop-in replacement.","has_detail_page":true},{"type_number":"6EM7","reason":"Brans cross-lists in same group. Similar dissimilar twin triode but Octal (8BD) vs Noval (9HF) base, different pin topology. 6EM7 Section 1 has much higher mu (68 vs 17.5).","has_detail_page":true},{"type_number":"6EW7","reason":"Same Noval 9HF pinout and dissimilar double triode structure with identical Section 1 (mu=17.5). Section 2 differs: 6EW7 has higher gm (7.5 vs 6.5 mA/V), lower ra (800 vs 925 ohms), and higher Pa_max (10W vs 7W).","has_detail_page":true},{"type_number":"6GF7","reason":"Brans cross-lists in same group. Novar base. Section 1 has much higher mu (64 vs 17.5). Different base and pin topology.","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Plate (Unit No.2)","function_code":"a2","notes":null},{"pin_number":"2","function":"Grid (Unit No.2)","function_code":"g1_2","notes":null},{"pin_number":"3","function":"Grid (Unit No.2)","function_code":"g1_2","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":"Plate (Unit No.1)","function_code":"a1","notes":null},{"pin_number":"7","function":"Grid (Unit No.1)","function_code":"g1_1","notes":null},{"pin_number":"8","function":"Cathode (Unit No.1)","function_code":"k1","notes":null},{"pin_number":"9","function":"Cathode (Unit No.2)","function_code":"k2","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":"0.9","numeric_value":"0.9","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Medium-Mu Triode","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":"1.5","numeric_value":"1.5","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"22","numeric_value":"22","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":"2.2","numeric_value":"2.2","unit":"MΩ","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":"-11","numeric_value":"-11","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"5.5","numeric_value":"5.5","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"8750","numeric_value":"8750","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"2.0","numeric_value":"2","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"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"4.0","numeric_value":"4","unit":"pF","param_group":"capacitances"},{"key":"Cin","display_name":"Input Capacitance","value":"2.2","numeric_value":"2.2","unit":"pF","param_group":"capacitances"},{"key":"Cout","display_name":"Output Capacitance","value":"0.52","numeric_value":"0.52","unit":"pF","param_group":"capacitances"}]},{"section_number":2,"section_label":"Low-Mu Triode","tube_type_key":"power_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":"7.0","numeric_value":"7","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"50","numeric_value":"50","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":"2.2","numeric_value":"2.2","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":"-17.5","numeric_value":"-17.5","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"35","numeric_value":"35","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"925","numeric_value":"925","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"6.5","numeric_value":"6.5","unit":"mA/V","param_group":"typical_operating"},{"key":"mu","display_name":"Amplification Factor (μ)","value":"6.0","numeric_value":"6","unit":"—","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"8.5","numeric_value":"8.5","unit":"pF","param_group":"capacitances"},{"key":"Cin","display_name":"Input Capacitance","value":"5.5","numeric_value":"5.5","unit":"pF","param_group":"capacitances"},{"key":"Cout","display_name":"Output Capacitance","value":"1.0","numeric_value":"1","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T19:03:08.045Z"}