{"type_number":"6HG5","canonical_url":"https://tubeofile.com/tubes/6HG5","manufacturer":"RCA","tube_type_key":"beam_tetrode","tube_type_display_name":"Beam Tetrode","base_name":"B7G","description":"Beam power tube in miniature 7-pin (B7G) envelope with controlled cathode warm-up time. Designed for audio output stages of television receivers. Minimizes extraneous sound during warm-up.","is_directly_heated":false,"completeness":"medium","notes":["The 6HG5 features controlled cathode warm-up time to minimize extraneous sound during receiver warm-up. Minimum warm-up time is 14 seconds.","At Va=250V, Vg2=250V, Vg1=-12.5V: Ia=47mA, gm=4100 umhos, Rp=52kΩ, max power output 4.5W.","At Va=180V, Vg2=180V, Vg1=-8.5V: Ia=29mA, gm=3700 umhos, Rp=58kΩ, max power output 2W."],"references":["https://frank.pocnet.net/sheets/049/6/6HG5.pdf","https://tdsl.duncanamps.com/show.php?des=6HG5"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6HG5","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6hg5.html"},"raw_equivalents":[],"equivalents":[],"similar":[{"type_number":"6AQ5","reason":"Similar B7G beam power tube — Sams lists 6AQ5A as substitute","has_detail_page":true},{"type_number":"6BM5","reason":"Similar B7G power pentode with similar output capability","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Grid 1 (Control Grid)","function_code":"g1","notes":null},{"pin_number":"2","function":"Cathode","function_code":"k","notes":null},{"pin_number":"3","function":"Heater","function_code":"h","notes":null},{"pin_number":"4","function":"Heater","function_code":"h","notes":null},{"pin_number":"5","function":"Anode","function_code":"a","notes":null},{"pin_number":"6","function":"Grid 2 (Screen)","function_code":"g2","notes":null},{"pin_number":"7","function":"Grid 1 (Control Grid)","function_code":"g1","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":"0.45","numeric_value":"0.45","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Beam Power Tube","tube_type_key":"beam_tetrode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"275","numeric_value":"275","unit":"V","param_group":"absolute_max"},{"key":"Vg2_max","display_name":"Screen Voltage (max)","value":"275","numeric_value":"275","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"12","numeric_value":"12","unit":"W","param_group":"absolute_max"},{"key":"Pg2_max","display_name":"Screen Dissipation (max)","value":"2","numeric_value":"2","unit":"W","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":"-12.5","numeric_value":"-12.5","unit":"V","param_group":"typical_operating"},{"key":"Vg2","display_name":"Screen Voltage","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"45","numeric_value":"45","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"52000","numeric_value":"52000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"4.1","numeric_value":"4.1","unit":"mA/V","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.4","numeric_value":"0.4","unit":"pF","param_group":"capacitances"},{"key":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"8","numeric_value":"8","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"8.5","numeric_value":"8.5","unit":"pF","param_group":"capacitances"},{"key":"Po","display_name":"Output Power","value":"4.5","numeric_value":"4.5","unit":"W","param_group":"output_stage"}]}],"synced_at":"2026-04-07T12:24:51.935Z"}