4 line tvsarray ? smda/b microsemi scottsdale division page 1 copyright ? 2005 11-11-2005 rev r www. microsemi . com scottsdale division smda03 thru smda24c, e3 and smdb03 thru smdb24c, e3 description appearance this transient voltage suppressor (tvs) array is packaged in an so-8 configuration giving protection to 4 unidire ctional or bi-directional data or interface lines. it is designed for use in applications where protection is required at the board level from voltage transients caused by electrostatic discharge (esd) as defined in iec 61000-4-2, electrical fast transient s (eft) per iec 61000-4-4 and effects of secondary lightning. these tvs arrays have peak pulse power ratings of 300 watts (smda) and 500 watts (smdb) for an 8/20 sec pulse. they are suitable for protection of sensitive circuitry cons isting of ttl, cmos, dram?s, sram?s, hcmos, hsic and low-voltage interfaces from 3.3 volts to 24 volts important: for the most current data, consult microsemi?s website: http://www.microsemi.com features packaging ? protects 3.0/3.3 volt up to 24 volt components ? protects 4 unidirectional or bidirectional lines ? provides electrically-isolated protection ? rohs compliant devices available by adding ?e3? suffix ? tape & reel per eia standard 481 ? 13 inch reel; 2,500 pieces (standard) ? carrier tubes; 95 pcs (optional) maximum ratings mechanical ? operating temperatur e: -55c to +150c ? storage temperature: -55c to +150c ? smda peak pulse power: 300 watts (fig. 1 and 2) ? smdb peak pulse power: 500 watts (fig. 1 and 2) ? pulse repetition rate: <.01% ? case: void-free transfer molded thermosetting epoxy compound meeting ul 94v-0 flammability classification ? terminals: tin-lead or rohs compliant annealed matte-tin plating solderable per mil-std-750 method 2026 ? weight: 0.066 grams (approximate) ? marking: msc logo, device marking code*, date code ? pin #1 defined by dot on top of package electrical characteristics per line @ 25 o c unless otherwise specified stand off voltage v wm volts breakdown voltage v br i br = 1 ma volts clamping voltage v c i pp = 1 a (figure 2) volts clamping voltage v c i pp = 5 a (figure 2) volts standby (leakage) current i d @v wm a capacitance f =1 mhz c @0v pf temperature coefficient of v br vbr mv/c part number device marking code * max min max max max typ typ smda03 sdk 3.3 4 7 9 200 600 -3 smda03c sdl 3.3 4 7 9 400 300 -5 smdb03 pdk 3.3 4 7 9 200 600 -3 smdb03c pdl 3.3 4 7 9 400 300 -5 smda05 sda 5.0 6 9.8 11 20 400 3 smda05c sdb 5.0 6 9.8 11 40 200 1 smdb05 pda 5.0 6 9.8 11 20 400 3 smdb05c pdb 5.0 6 9.8 11 40 200 1 smda12 sdc 12.0 13.3 19 24 1 185 10 smda12c sdd 12.0 13.3 19 24 1 95 8 smdb12 pdc 12.0 13.3 19 24 1 185 10 smdb12c pdd 12.0 13.3 19 24 1 95 8 smda15 sde 15.0 16.7 24 30 1 140 13 smda15c sdf 15.0 16.7 24 30 1 70 11 smdb15 pde 15.0 16.7 24 30 1 140 13 smdb15c pdf 15.0 16.7 24 30 1 70 11 smda24 sdg 24.0 26.7 43 55 1 90 30 smda24c sdh 24.0 26.7 43 55 1 45 28 smdb24 pdg 24.0 26.7 43 55 1 90 30 smdb24c pdh 24.0 26.7 43 55 1 45 28 note: transient voltage suppressor (tvs) product is no rmally selected based on its stand off voltage v wm . product selected voltage should be equal to or greater than the continuous peak operating voltage of the circu it to be protected. part numbers with a c suffix are bi-directio nal devices. * device marking has an e3 suffix added for the rohs compliant options, e.g. sdke3, sdle3, sd ce3, sdee3, pdhe3, etc. 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
4 line tvsarray ? smda/b microsemi scottsdale division page 2 copyright ? 2005 11-11-2005 rev r www. microsemi . com scottsdale division smda03 thru smda24c, e3 and smdb03 thru smdb24c, e3 symbols & definitions symbol definition v wm stand off voltage: maximum dc volt age that can be applie d over the operating temperature range. v wm must be selected to be equal or be greater than t he operating voltage of t he line to be protected. v br minimum breakdown voltage: minimum voltage t he device will exhibit at a specified current v c clamping voltage: maximum clamping voltage across the tvs device when subjected to a given current at a pulse time of 20 s. i d standby current: leakage current at v wm. c capacitance: capacitance of the tvs as defined @ 0 volts at a frequency of 1 mhz and stated in picofarads. graphs 10.0 1.0 0.1 0.01 figure 1 figure 2 peak pulse power vs pulse time pulse wave form outline and schematic pad layout inches millimeters dim min max min max a 0.188 0.197 4.77 5.00 b 0.150 0.158 3.381 4.01 c 0.053 0.069 1.35 1.75 d 0.011 0.021 0.28 0.53 f 0.016 0.050 0.41 1.27 g 0.050 bsc 1.27 bsc j 0.006 0.010 0.15 0.25 k 0.005 0.008 0.10 0.20 l 0.189 0.206 4.80 5.23 p 0.228 0.244 5.79 6.19 8 7 6 5 2 4 3 1 8 7 6 5 2 4 3 1 unidirectional bidirectional outline schematic 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
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