1N6309US thru 1N6355DUS Qualified Levels: VOIDLESS HERMETICALLY SEALED JAN, JANTX, JANTXV Available on 500mV GLASS ZENER DIODES and JANS commercial Qualified per MIL-PRF-19500/533 versions DESCRIPTION This Zener voltage regulator series is military qualified and is ideal for high-reliability applications where a failure cannot be tolerated. These industry-recognized 0.5 watt Zener voltage regulators are hermetically sealed with voidless-glass construction using an internal metallurgical bond. It includes Zener selections from 2.4 to 200 volts in standard 5% tolerances as well as tighter 1% and 2% tolerances. They are also available in axial leaded packages. Microsemi also offers numerous other Zener products to meet higher and lower power ratings in both thru-hole and surface mount packages. B-SQ Melf Package Important: For the latest information, visit our website 1N6309US thru 1N6355DUS MECHANICAL and PACKAGING CASE: Hermetically sealed voidless hard glass with tungsten slugs. TERMINALS: End caps are copper with tin/lead (Sn/Pb) or RoHS compliant matte/tin (commercial grade only) finish. POLARITY: Cathode indicated by band. TAPE & REEL option: Standard per EIA-481-B. Consult factory for quantities. WEIGHT: 0.0945 grams. See Package Dimensions on last page. PART NOMENCLATURE JAN 1N6309 C US (e3) Reliability Level RoHS Compliance JAN = JAN Level e3 = RoHS Compliant (available JANTX = JANTX Level on commercial grade only) JANTXV = JANTXV Level Blank = non-RoHS Compliant JANS = JANS Level Blank = Commercial MELF Package JEDEC type number Zener Voltage Tolerance (see Electrical Characteristics C = +/- 2% table) D = +/- 1% Blank = +/- 5% SYMBOLS & DEFINITIONS Symbol Definition I Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature. R I , I , I Regulator Current: The dc regulator current (I ), at a specified test point (I ), near breakdown knee (I ). Z ZT ZK Z ZT ZK I Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating. ZM I Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form. ZSM V Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current. F Working Peak Voltage: The maximum peak voltage that can be applied over the operating temperature range. This is V WM also referred to as Standoff Voltage. V Zener Voltage: The Zener voltage the device will exhibit at a specified current (I ) in its breakdown region. Z Z Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a Z or Z ZT ZK specified rms current modulation (typically 10% of I or I ) and superimposed on I or I respectively. ZT ZK ZT ZK T4-LDS-0193-1, Rev. 1 (111899) 2011 Microsemi Corporation Page 2 of 6