microsemi scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503 page 1 copyright ? 2001 msc1372.pdf 1-07 2002 rev e www. microsemi . com usb50403 thru usb50424 unidirectional tvsarray ? product preview scottsdale division description this transient voltage suppressor (tvs) is packaged in an sot-143 configuration giving protection to 1 unidirectional data or interface line. 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 transients (eft) per iec 61000-4-4 and effects of secondary lightning. these tvs arrays have a peak power rating of 500 watts for an 8/20 sec pulse. this array is suitable for protection of sensitive circuitry consisting of ttl, cmos dram?s, sram?s, hcmos, hsic microprocessors, universal serial bus (usb) and i/o transceivers. the usb504xx product provides board level protection from static electricity and other induced voltage surges that can damage or upset sensitive circuitry. important: for the most current data, consult microsemi ?s website: http://www.microsemi.com electrical characteristics per line @ 25c unless otherwise specified stand off voltage v wm volts breakdown voltage v br @1 ma volts clamping voltage v c @ 1 amp (figure 2) volts clamping voltage v c @ 5 amp (figure 2) volts standby 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 max min max max max max max usb50403 aa 3.3 4 8 11 200 3 -5 USB50405 ab 5.0 6.0 10.8 13 20 3 1 usb50412 ac 12.0 13.3 19 26 1 3 8 usb50415 ad 15.0 16.7 24 32 1 3 11 usb50424 ae 24.0 26.7 43 57 1 3 28 note: transient voltage suppressor (tvs) product is normally 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 circuit to be protected. tvsarray ? series applications ? eia-rs485 data rates: 5 mbs ? 10 base t ethernet ? usb date rate: 900 mbs features ? protects 1 unidirectional line ? surge protection per iec 61000-4-2, iec 61000-4-4 ? provides electrically isolated protection ? ul 94v-0 flamability classification ? ultra low capacitance 3 pf per line pair ? ultra low leakage maximum ratings ? operating temperature: -55c to +150c ? storage temperature: -55c to +150c ? peak pulse power: 500 watts (8/20 s, figure 1) ? pulse re p etition rate: < .01% mechanical ? molded sot-143 surface mount ? weight: 0.035 grams (approximate) ? body marked with device marking code ? pin #1 defined b y dot on to p of p acka g e packaging ? tape & reel per eia standard 481-1-a ? 7 inch reel; 3,000 pieces per reel usb50403 thru usb50424
microsemi scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503 page 2 copyright ? 2001 msc1372.pdf 1-07 2002 rev e www. microsemi . com usb50403 thru usb50424 unidirectional tvsarray ? product preview scottsdale division 8/20s 500w pulse figure 1 peak pulse power vs pulse time t = sec graphs package data inches millimeters dim min ma x min m a x a 0.070 0.080 1.78 2.03 b 0.047 0.055 1.20 1.40 c 0.030 0.037 0.77 0.94 c1 0.015 0.020 0.37 0.50 d 0.110 0.119 2.80 3.04 e 0.035 0.044 0.89 1.17 f 0.071 0.079 1.80 2.00 g 0.0006 0.006 0.013 0.05 h 0.003 0.007 0.085 0.17 i 0.018 0.023 0.45 0.60 j 0.083 0.093 2.10 2.50 symbols & definitions symbol definition v wm stand off voltage: maximum dc voltage that can be applied over the operating temperature range. vwm must be selected to be equal or be greater than the operating voltage of the line to be protected. v br minimum breakdown voltage: the minimum voltage the 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 outline and schematic figure 2 pulse wave form ppp peak pulse power (kw) dimensions inches mm dim min max min max a .032 .040 0.80 1.00 a1 .040 .048 1.00 1.20 b --- .057 --- 1.44 c --- .087 --- 2.20 d .075 bsc 1.90 bsc e .067 bsc 1.70 bsc g .032 .040 0.80 1.00 h .134 .140 3.40 3.60 pad layout schematic outline
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