? 2017 littelfuse, inc. specifcations are subject to change without notice. revised: 02/23/17 description features applications the slvu2.8-4 was designed to protect low voltage, cmos devices from esd and lightning induced transients. there is a compensating diode in series with each low voltage tvs to present a low loading capacitance to the line being protected. these robust structures can safely absorb repetitive esd strikes at 30kv (contact discharge) per iec 61000-4-2 standard and each structure can safely dissipate up to 40a (iec 61000-4-5 2nd edition, t p =8/20s) with very low clamping voltages. pinout functional block diagram ? esd, iec 61000-4-2, 30kv contact, 30kv air ? eft, iec 61000-4-4, 40a (5/50ns) ? lightning, iec 61000-4-5 2nd edition, 40a (8/20s) ? low capacitance of 2pf per line ? low leakage current of 1a (max) at 2.8v ? soic-8 (jedec mo-012) pin confguration allows for simple fow-through layout ? rohs compliant and lead free ? moisture sensitivity level (msl-1) ? 10/100/1000 ethernet ? wan/lan equipment ? switching systems ? desktops, servers, and notebooks ? analog inputs ? base stations pin 1. 3 pin 2.4 pin 6.8 pin 5.7 rohs pb green application example et hernet ph y j1 j8 rj -4 5 co nn ecto r slvu2.8-4 case gnd tx+ tx- rx+ rx- slvu2.8-4 series 2.8v 40a tvs array additional information daasee saes resources tvs diode arrays (spa ? diodes) lightning surge protection - slvu2.8-4 series
? 2017 littelfuse, inc. specifcations are subject to change without notice. revised: 02/23/17 absolute maximum ratings parameter rating units peak pulse power (t p =8/20s) 600 w peak pulse current (t p =8/20s) 40 a operating temperature C40 to 125 oc storage temperature C55 to 150 oc electrical characteristics (t op = 25c) parameter symbol test conditions min typ max units reverse standoff voltage v rwm i r 1a 2.8 v reverse breakdown voltage v br i t =2a 3.0 v snap back voltage v sb i t =50ma 2.8 v reverse leakage current i leak v r =2.8v (each line) 1 a clamping voltage 1 v c i pp =5a, t p =8/20s (each line) 7. 0 8.5 v clamping voltage 1 v c i pp =24a, t p =8/20s (each line) 13.9 15.0 v esd withstand voltage 1 v esd iec61000-4-2 (contact) 30 kv iec61000-4-2 (air) 30 kv dynamic resistance r dyn (v c2 - v c1 ) / (i pp2 - i pp1 ) (each line) 0.4 diode capacitance 1 c d v r =0v, f=1mhz (each line) 2.0 2.5 pf caution: stresses above those listed in absolute maximum ratings may cause permanent damage to the device. this is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specifcation is not implied. note: 1 parameter is guaranteed by design and/or device characterization. figure 2: clamping voltage vs. i pp figure 1: capacitance vs. reverse voltage figure 3: 8/20 s pulse waveform dc bias (v) capacitance (pf) time (s) percent of i pp 0 2 4 6 8 10 12 14 05 10 15 20 25 peak pulse current-i pp (a) clamping voltage-v c (v) tvs diode arrays (spa ? diodes) lightning surge protection - slvu2.8-4 series
? 2017 littelfuse, inc. specifcations are subject to change without notice. revised: 02/23/17 ti me te mperature t p t l t s(max) t s(min) 25 t p t l t s time to peak temperature preheat p rehea t ramp-up r amp-up ramp-down r amp-d o critical zone t l to t p c ritical zo n e t l to t p refow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 180 secs average ramp up rate (liquidus) temp (t l ) to peak 5c/second max t s(max) to t l - ramp-up rate 5c/second max refow - temperature (t l ) (liquidus) 217c - temperature (t l ) 60 C 150 seconds peak temperature (t p ) 260 +0/-5 c time within 5c of actual peak temperature (t p ) 20 C 40 seconds ramp-down rate 5c/second max time 25c to peak temperature (t p ) 8 minutes max. do not exceed 260c soldering parameters package dimensions mechanical drawings and recommended solder pad outline package soic-8 pins 8 jedec ms-012 millimetres inches min max min max a 1.35 1.75 0.053 0.069 a1 0.10 0.25 0.004 0.010 a2 1.25 1.65 0.050 0.065 b 0.31 0.51 0.012 0.020 c 0.17 0.25 0.007 0.010 d 4.80 5.00 0.189 0.197 e 5.80 6.20 0.228 0.244 e1 3.80 4.00 0.150 0.157 e 1.27 bsc 0.050 bsc l 0.40 1.27 0.016 0.050 o recommended soldering pad outline (reference only) f l product characteristics lead plating matte tin lead material copper alloy lead coplanarity 0.0004 inches (0.102mm) substitute material silicon body material v-0 per ul 94 molded epoxy notes : 1. all dimensions are in millimeters 2. dimensions include solder plating. 3. dimensions are exclusive of mold fash & metal burr. 4. all specifcations comply to jedec spec mo-203 issue a 5. blo is facing up for mold and facing down for trim/form, i.e. reverse trim/form. 6. package surface matte fnish vdi 11-13. tvs diode arrays (spa ? diodes) lightning surge protection - slvu2.8-4 series
? 2017 littelfuse, inc. specifcations are subject to change without notice. revised: 02/23/17 ordering information part number package marking min. order qty. slvu2.8-4btg soic-8 u2.8-4 2500 part numbering system part marking system slvu2.8 b t g series package b = soic-8 no. of channels t= tape & reel -4 g= green u2.8-4 u 2.8 product serie s u = slvu2.8 voltage level -4 no. of channels embossed carrier tape & reel speci cation ? soic package user f eeding direc tion pin 1 l ocation symbol millimetres inches min max min max e 1.65 1.85 0.065 0.073 f 5.4 5.6 0.213 0.22 p2 1. 9 2.1 0.075 0.083 d 1. 5 1. 6 0.059 0.063 d1 1.50 min 0.059 min p0 3.9 4.1 0.154 0.161 10p0 40.0 0.20 1.574 0.008 w 11. 9 12.1 0.468 0.476 p 7. 9 8.1 0.311 0.319 a0 6.3 6.5 0.248 0.256 b0 5.1 5.3 0.2 0.209 k0 2 2.2 0.079 0.087 t 0.30 0.05 0.012 0.002 disclaimer notice - information furnished is believed to be accurate and reliable. however, users should independently evaluate the suitability of and test each product selected for their own applications. littelfuse products are not designed for, and may not be used in, all applications. read complete disclaimer notice at www.littelfuse.com/disclaimer-electronics . tvs diode arrays (spa ? diodes) lightning surge protection - slvu2.8-4 series
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