{"type_number":"6BC5","canonical_url":"https://tubeofile.com/tubes/6BC5","manufacturer":"RCA","tube_type_key":"sharp_cutoff_pentode","tube_type_display_name":"Sharp Cutoff Pentode","base_name":"B7G","description":"Sharp-cutoff RF pentode in a miniature B7G envelope. Designed for wideband RF and IF amplifier service. Higher transconductance than the 6AG5. Indirectly heated.","is_directly_heated":false,"completeness":"high","notes":["GE Essential Characteristics: Va=250V, Vg2=150V, Vg=-8V, Ia=8mA, gm=5700 umhos, Rp=800kΩ, Pa_max=3W, Va_max=300V, Vg2_max=150V.","Radiomuseum confirms 6CE5 is electrically identical to 6BC5.","Philips interchange notes 6BA6/EF93 as partial replacement.","Brans Vademecum (Table Va) lists with 6AU6, 12AU6, 3AU6, 6SH7 family."],"references":["https://frank.pocnet.net/sheets/049/6/6BC5.pdf","https://frank.pocnet.net/sheets/127/6/6BC5.pdf"],"source_urls":{"r_type":null,"tdsl":null,"radiomuseum":"https://www.radiomuseum.org/tubes/tube_6bc5.html"},"raw_equivalents":[],"equivalents":[],"similar":[{"type_number":"6AG5","reason":"Similar sharp-cutoff pentode on B7G base — slightly lower gm, Philips notes partial replacement","has_detail_page":true},{"type_number":"6AU6","reason":"Similar sharp-cutoff pentode on B7G base — Brans lists in same group (Table Va)","has_detail_page":false},{"type_number":"6CE5","reason":"Same sharp-cutoff pentode structure on B7G base — different Pa_max ratings (3W vs 2W)","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Control Grid (g1)","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":"Plate","function_code":"a","notes":null},{"pin_number":"6","function":"Screen Grid (g2)","function_code":"g2","notes":null},{"pin_number":"7","function":"Suppressor Grid (g3)","function_code":"g3","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":"0.3","numeric_value":"0.3","unit":"A","param_group":"heater"}],"sections":[{"section_number":1,"section_label":"Pentode","tube_type_key":"sharp_cutoff_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":"150","numeric_value":"150","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"3.0","numeric_value":"3","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":"Vs","display_name":"Screen Voltage (typical)","value":"150","numeric_value":"150","unit":"V","param_group":"typical_operating"},{"key":"Vg","display_name":"Grid 1 Bias Voltage","value":"-8","numeric_value":"-8","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"8","numeric_value":"8","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"800000","numeric_value":"800000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"5.7","numeric_value":"5.7","unit":"mA/V","param_group":"typical_operating"}]}],"synced_at":"2026-04-07T12:17:29.047Z"}