bidirectional tvsarray ? www. microsemi . com scottsdale division usb0803c-a thru usb0824c-a, e3 usb08xxc-a, e3 description appearance this transient voltage suppressor (tvs) a rray is packaged in an so-8 configuration giving protection to 2 bidirectional data or interface lines. it is designed for use in applications where very low c apacitance protection is requir ed at the board level from voltage transients caused by electrostatic di scharge (esd) as defined in iec 61000-4-2, electrical fast transients (eft) per iec 61000- 4-4 and effects of secondary lightning. it is also available with either tin-lead plated terminations or as rohs compliant with annealed matte-tin finish by adding an ?e3? suffix to the part number*. using the schematic on the second page, pi ns 1 & 2 are tied together for the first protected line, and pins 7 & 8 are tied together to the ground. the same would then occur for a second protected line where pins 3 & 4 are tied together and pins 5 & 6 are tied together to the ground. these may also be switched in polarity connections since the electrical features are the same in each antiparallel (opposite facing) leg when the pins are tied together in this manner for bidirectional protection. these tvs arrays have a peak power rating of 500 watts for an 8/20 sec pulse. this array is suitable for protection of sensitiv e circuitry consisting of ttl, cmos dram?s, sram?s, hcmos, hsic microprocessors, universal serial bus (usb) and i/o transceivers. the usb08xxc-a product provides board level protection from static electricity and other induced voltage surges t hat can damage or upset sensitive circuitry. so?8 important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? protects up to 2 bi-directional lines ? surge protection per iec 61000-4-2, iec 61000-4-4 ? provides electrically isolated protection ? ul 94v-0 flammability classification ? rohs compliant devices available by adding ?e3? suffix ? low capacitance 5 pf per line pair ? low leakage ? eia-rs485 data rates: 5 mbs ? 10 base t ethernet ? usb date rate: 900 mbs ? tape & reel per eia standard 481 ? 13 inch reel; 2,500 pieces (optional) ? carrier tubes; 95 pcs (standard) maximum ratings mechanical and packaging ? operating temperatur e: -55c to +150c ? storage temperature: -55c to +150c ? peak pulse power: 500 watts (8/20 s, figure 1) ? pulse repetition rate: < .01% ? solder temperature: 260c for 10 s (maximum) ? molded so-8 surface mount ? weight 0.066 grams (approximate) ? marking: logo, device marking code*, date code ? pin #1 defined by dot on top of package electrical characteristics 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 usb0803c-a u3ca 3.3 4 8 11 200 5 -5 usb0805c-a u5ca 5.0 6.0 10.8 13 40 5 1 usb0812c-a u12ca 12.0 13.3 19 26 1 5 8 usb0815c-a u15ca 15.0 16.7 24 32 1 5 11 usb0824c-a u24ca 24.0 26.7 43 57 1 5 28 * device marking has an e3 suffix added for rohs compliant opt ion, e.g. u3cae3, u5cae3, u12cae3, u15cae3, or u24cae3 microsemi scottsdale division page 1 copyright ? 2006 8-01-2006 rev j 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
bidirectional tvsarray ? www. microsemi . com scottsdale division usb0803c-a thru usb0824c-a, e3 usb08xxc-a, e3 symbols & definitions symbol definition v wm stand off voltage: maximum dc volt age that can be applie d over the operating temperature range. vwm must be selected to be equal or be greater t han 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 ppp peak pulse power (w) 8/ 2 0s 50 0 w p u l se figure 1 figure 2 peak pulse power vs pulse time t = sec 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 3.81 4.01 c 0.053 0.069 1.35 1.75 d 0.011 0.021 0.28 0.53 f 0.0160 0.050 0.41 1.27 g 0.050 bsc 1.27 bsc j 0.006 0.010 0.15 0.25 k 0.004 0.008 0.10 0.20 l 0.189 0.206 4.80 5.23 p 0.228 0.244 5.79 6.19 outline schematic microsemi scottsdale division page 2 copyright ? 2006 8-01-2006 rev j 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
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