{"type_number":"6J32P","canonical_url":"https://tubeofile.com/tubes/6J32P","manufacturer":"Svetlana","tube_type_key":"ss_pentode","tube_type_display_name":"Small Signal Pentode","base_name":"Noval","description":"Low-noise small-signal AF pentode with short anode-grid characteristic, designed for input stages of sound recording and reproducing equipment. Russian (Soviet) equivalent of EF86/6267, manufactured by Svetlana.","is_directly_heated":false,"completeness":"high","notes":["Russian designation is 6Ж32П (6Zh32P). The Latin transliteration 6J32P is used internationally.","Pins 1 and 7 are internal metallic shields — must be grounded for lowest noise performance, identical to EF86 shielding arrangement.","Russian spec gives gm = 1.8 ± 0.5 mA/V vs Western EF86 spec of 2.0 mA/V; this reflects wider Soviet production tolerances rather than a design difference.","Rg_max = 3 MΩ per Russian datasheet (applies at all operating points), vs EF86 which allows 10 MΩ at Pa < 0.2 W.","Svetlana EF86 datasheet specifies cathode bias resistor of 1 kΩ (pentode) or 3.9 kΩ (triode); some Russian sources cite 1.5 kΩ for pentode — verify against specific circuit requirements.","Triode-strapped data from Svetlana EF86 datasheet (manufacturer data): Va=250V, Rk=3.9kΩ, Ia=0.65mA, ra≈65kΩ, rl=220kΩ. Schlangen measured values for EF86 (μ=33, gm=2.0, rp=16.5kΩ) represent a different operating point.","EF806S is a selected low-noise variant with tighter tolerances — not identical but pin-compatible."],"references":["https://www.drtube.com/datasheets/ef86-sed1996.pdf","https://soviet-tubes.com/product/6j32p/","https://klausmobile.narod.ru/testerfiles/6j32p.htm"],"source_urls":{"r_type":null,"tdsl":null,"radiomuseum":"https://www.radiomuseum.org/tubes/tube_6j32p.html"},"raw_equivalents":["EF86","6267","6CF8","6BK8","EF806S","Z729","CV2901"],"equivalents":[{"type_number":"EF806S","equivalence_type":"direct","notes":null},{"type_number":"EF86","equivalence_type":"direct","notes":null}],"similar":[],"pins":[{"pin_number":"1","function":"Screen Grid","function_code":"g2","notes":null},{"pin_number":"2","function":"Internal Shield","function_code":"ia","notes":null},{"pin_number":"3","function":"Cathode","function_code":"k","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":"Anode","function_code":"a","notes":null},{"pin_number":"7","function":"Internal Shield","function_code":"ia","notes":null},{"pin_number":"8","function":"Suppressor Grid (g3, internally connected to cathode)","function_code":"g3","notes":null},{"pin_number":"9","function":"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":"0.2","numeric_value":"0.2","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":"200","numeric_value":"200","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"1.0","numeric_value":"1","unit":"W","param_group":"absolute_max"},{"key":"Ps_max","display_name":"Screen Dissipation (max)","value":"0.2","numeric_value":"0.2","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"6","numeric_value":"6","unit":"mA","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":"Rg_max","display_name":"Max Grid Resistor","value":"3","numeric_value":"3","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":"Vs","display_name":"Screen Voltage (typical)","value":"140","numeric_value":"140","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":"3.0","numeric_value":"3","unit":"mA","param_group":"typical_operating"},{"key":"mAs","display_name":"Screen Current","value":"0.6","numeric_value":"0.6","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"2500000","numeric_value":"2500000","unit":"Ω","param_group":"typical_operating"},{"key":"gm","display_name":"Transconductance","value":"1.8","numeric_value":"1.8","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":"Cgk","display_name":"Grid-to-Cathode Capacitance","value":"3.8","numeric_value":"3.8","unit":"pF","param_group":"capacitances"},{"key":"Cak","display_name":"Anode-to-Cathode Capacitance","value":"5.4","numeric_value":"5.4","unit":"pF","param_group":"capacitances"}]},{"section_number":2,"section_label":"Triode Strapped","tube_type_key":"small_signal_triode","specs":[{"key":"Va_max","display_name":"Anode Voltage (max)","value":"200","numeric_value":"200","unit":"V","param_group":"absolute_max"},{"key":"Pa_max","display_name":"Anode Dissipation (max)","value":"1.0","numeric_value":"1","unit":"W","param_group":"absolute_max"},{"key":"Ik_max","display_name":"Cathode Current (max)","value":"6","numeric_value":"6","unit":"mA","param_group":"absolute_max"},{"key":"Va","display_name":"Anode Voltage (typical)","value":"250","numeric_value":"250","unit":"V","param_group":"typical_operating"},{"key":"mAa","display_name":"Anode Current","value":"0.65","numeric_value":"0.65","unit":"mA","param_group":"typical_operating"},{"key":"ra","display_name":"Anode Resistance","value":"65000","numeric_value":"65000","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":"33","numeric_value":"33","unit":"—","param_group":"typical_operating"},{"key":"Rk","display_name":"Cathode Resistor (self-bias)","value":"3900","numeric_value":"3900","unit":"Ω","param_group":"typical_operating"},{"key":"rl","display_name":"Load Impedance","value":"220000","numeric_value":"220000","unit":"Ω","param_group":"output"}]}],"synced_at":"2026-04-07T12:25:19.015Z"}