{"type_number":"6AH6","canonical_url":"https://tubeofile.com/tubes/6AH6","manufacturer":"RCA","tube_type_key":"ss_pentode","tube_type_display_name":"Small Signal Pentode","base_name":"B7G","description":"Sharp-cutoff RF pentode with very high transconductance. Miniature B7G base. Designed for wide-band video and RF amplifier applications where high gain and wide bandwidth are required.","is_directly_heated":false,"completeness":"high","notes":["Very high transconductance (9000 umhos) makes this tube ideal for wide-band video amplifiers and cascode RF stages.","GE Essential Characteristics: Pa_max 3.2 W, Va_max 300 V, Vs_max 250 V, Va(typ) 250 V, Vs(typ) 150 V, Vg=-2V, Ia=10mA, Rp=10000, gm=9000.","Sams substitution guide lists 6F36 and 10C14 as substitutes.","Sharp-cutoff characteristic — not suitable for AGC-controlled stages (use remote-cutoff types like 6BA6 instead)."],"references":["https://frank.pocnet.net/sheets/127/6/6AH6.pdf","https://tdsl.duncanamps.com/show.php?des=6AH6"],"source_urls":{"r_type":null,"tdsl":"https://tdsl.duncanamps.com/show.php?des=6AH6","radiomuseum":"https://www.radiomuseum.org/tubes/tube_6ah6.html"},"raw_equivalents":["6F36","CV2521"],"equivalents":[],"similar":[{"type_number":"6AC7","reason":"Brans lists as equivalent but 6AC7 is Octal base — not pin-compatible","has_detail_page":true},{"type_number":"6AK5","reason":"Similar sharp-cutoff pentode on B7G base but lower gm (5100 vs 9000 umhos) — different gain class","has_detail_page":true},{"type_number":"EF94","reason":"European designation for similar sharp-cutoff RF pentode but different pinout","has_detail_page":true}],"pins":[{"pin_number":"1","function":"Anode","function_code":"a","notes":null},{"pin_number":"2","function":"Screen Grid (g2)","function_code":"g2","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":"Suppressor Grid (g3)","function_code":"g3","notes":null},{"pin_number":"6","function":"Control Grid (g1)","function_code":"g1","notes":null},{"pin_number":"7","function":"Cathode","function_code":"k","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":"Pentode","tube_type_key":"ss_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":"250","numeric_value":"250","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"3.2","numeric_value":"3.2","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"1.4","numeric_value":"1.4","unit":"W","param_group":"absolute_max"},{"key":"Vhk_max","display_name":"Heater-to-Cathode Voltage (max)","value":"100","numeric_value":"100","unit":"V","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":"-2","numeric_value":"-2","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"10","numeric_value":"10","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"10000","numeric_value":"10000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"9.0","numeric_value":"9","unit":"mA/V","param_group":"typical_operating"},{"key":"Cgp","display_name":"Grid-to-Plate Capacitance","value":"0.025","numeric_value":"0.025","unit":"pF","param_group":"capacitances"},{"key":"Cin","display_name":"Input Capacitance","value":"6.5","numeric_value":"6.5","unit":"pF","param_group":"capacitances"},{"key":"Cout","display_name":"Output Capacitance","value":"2.8","numeric_value":"2.8","unit":"pF","param_group":"capacitances"}]}],"synced_at":"2026-04-07T12:15:37.875Z"}