2N3501UB Qualified Levels: RADIATION HARDENED JAN, JANTX, JANTXV compliant AND JANS NPN SILICON SWITCHING TRANSISTOR Qualified per MIL-PRF-19500/366 DESCRIPTION This 2N3501 epitaxial planar transistor is military qualified up to a JANS level for high- reliability applications. This device is also available in thru hole TO-5 and TO-39 packaging as well as a low profile U4 surface mount. Microsemi also offers numerous other transistor products to meet higher and lower power ratings with various switching speed requirements in both through-hole and surface-mount packages. Important: For the latest information, visit our website 2N3501UB MECHANICAL and PACKAGING CASE: Ceramic. TERMINALS: Gold plating over nickel under plate. MARKING: Part number, date code, manufacturers ID. TAPE & REEL option: Standard per EIA-418D. Consult factory for quantities. WEIGHT: < 0.04 Grams. See Package Dimensions on last page. PART NOMENCLATURE JAN 2N3501 UB Reliability Level Surface Mount package JAN = JAN Level JANTX = JANTX Level JANTXV = JANTXV Level JANS = JANS Level Blank = Commercial JEDEC type number (see Electrical Characteristics table) SYMBOLS & DEFINITIONS Symbol Definition Common-base open-circuit output capacitance C obo I Collector cutoff current, base open CEO I Collector cutoff current, circuit between base and emitter CEX I Emitter cutoff current, collector open EBO h Common-emitter static forward current transfer ratio FE V Collector-emitter voltage, base open CEO V Collector-emitter voltage, emitter open CBO V Emitter-base voltage, collector open EBO T4-LDS-0276-3, Rev. 1 (121564) 2012 Microsemi Corporation Page 2 of 7