{"type_number":"19DE3","canonical_url":"https://tubeofile.com/tubes/19DE3","manufacturer":"General Electric","tube_type_key":"rectifier","tube_type_display_name":"Rectifier","base_name":"Compactron","description":"Half-wave vacuum rectifier (heater-cathode type diode) with diffusion-bonded cathode, designed for use as a damper diode in the horizontal-deflection circuit of color television receivers. Compactron 12-pin base (E12-70) with small top cap for cathode connection. Low tube drop and 5000V PIV. The diffusion-bonded cathode eliminates plate-to-cathode arcing caused by emissive particles.","is_directly_heated":false,"completeness":"high","notes":["General Electric product information, November 1969. Compactron 12-pin base (E12-70, button) with small top cap (C1-1) for cathode. Outline EIA 9-101.","Coated unipotential cathode with diffusion bonding. T-9 glass envelope. Any mounting position.","Heater voltage 19V AC or DC, heater current 0.6 +/- 0.04 A. Heater warm-up time approximately 11 seconds.","Interelectrode capacitances (approx., without external shield): cathode-to-plate-and-heater (k to p+h) 21 pF, plate-to-cathode-and-heater (p to k+h) 13 pF, heater-to-cathode (h to k) 1.7 pF.","Peak heater-cathode voltage: heater positive — 100V DC, 300V total DC and peak; heater negative — 900V DC, 5000V total DC and peak.","Tube voltage drop at Ib=700 mA DC (approximate): 25V.","Pins 2, 5, 6, 7, 8, 9 are internal connections — do not use. Pins 3 and 11 are no connection.","Color TV type — designed for higher-current color deflection circuits."],"references":["https://frank.pocnet.net/sheets/123/1/19DE3.pdf"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=19DE3","radiomuseum":"https://www.radiomuseum.org/tubes/tube_19DE3.html"},"raw_equivalents":[],"equivalents":[],"similar":[{"type_number":"22DE4","reason":"Similar half-wave TV damper with 5500V PIV but Octal base and 22.4V heater — not pin-compatible","has_detail_page":true},{"type_number":"6DE4","reason":"Similar half-wave TV damper (Octal, 6.3V heater) — different base and heater voltage","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Heater","function_code":"h","notes":null},{"pin_number":"2","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"3","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"4","function":"Plate (Anode)","function_code":"a","notes":null},{"pin_number":"5","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"6","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"7","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"8","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"9","function":"Internal Connection — Do Not Use","function_code":"ic","notes":null},{"pin_number":"10","function":"Plate (Anode)","function_code":"a","notes":null},{"pin_number":"11","function":"No Connection","function_code":"nc","notes":null},{"pin_number":"12","function":"Heater","function_code":"h","notes":null},{"pin_number":"TC","function":"Cathode (Top Cap)","function_code":"k","notes":null}],"specs":[{"key":"Vh","display_name":"Heater Voltage","value":"19","numeric_value":"19","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":"Damper Diode","tube_type_key":"rectifier","specs":[{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"9.0","numeric_value":"9","unit":"W","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"5000","numeric_value":"5000","unit":"V","param_group":"absolute_max"},{"key":"PIV","display_name":"Peak Inverse Voltage","value":"5000","numeric_value":"5000","unit":"V","param_group":"rectifier"},{"key":"Vdrop","display_name":"Voltage Drop (typical)","value":"25","numeric_value":"25","unit":"V","param_group":"rectifier"},{"key":"Idc_max","display_name":"Max DC Output Current (total, not per-anode)","value":"350","numeric_value":"350","unit":"mA","param_group":"rectifier"},{"key":"Ia_peak","display_name":"Peak Anode Current (surge)","value":"1050","numeric_value":"1050","unit":"mA","param_group":"rectifier"}]}],"synced_at":"2026-04-08T07:49:45.428Z"}