transient voltage suppressors array for esd protection revision january 06, 2014 1 / 3 @ un semiconductor co., ltd. 2014 specifications are subject to change without notice. please refer to www.unsemi.com.tw for current information. SM712 un semiconductor co., ltd. www.unsemi.com.tw sot-23 the SM712 is designed to protect voltage sensitive components from esd and transient voltage events. excellent clamping capability, low leakage, and fast response time, make these parts ideal for esd protection on designs where board space is at a premium. u 400 watts peak pulse power per line (tp=8/20 s) u protects two +12v to -7v lines u low clamping voltage u rohs compliant u iec61000-4-2 (esd) 15kv (air), 8kv (contact) u iec61000-4-4 (eft) 40a (5/50 s) u iec61000-4-5 (lightning) 12a (8/20 s) u protection of rs-485 transceivers with extended common-mode range u security systems u automatic teller machines u hfc systems u networks u jedec sot-23 package u molding compound flammability rating : ul 94v-0 u weight 8.0 milligrams (approximate) u quantity per reel : 3,000pcs u reel size : 7 inch u lead finish : lead free symbol parameter value units p pp peak pulse power (tp=8/20 s waveform) 400 w t l lead soldering temperature 260 (10sec) o c t stg storage temperature range -55 to +150 o c t j operating temperature range -55 to +150 o c air discharge 15 iec61000-4-2 (esd) contact discharge 8 kv iec61000-4-4 (eft) 40 a iec61000-4-5 ( lightning ) 12 a mechanical characteristics d escription feature functional diagram applications m echanical characteristics
transient voltage suppressors array for esd protection revision january 06, 2014 2 / 3 @ un semiconductor co., ltd. 2014 specifications are subject to change without notice. please refer to www.unsemi.com.tw for current information. SM712 un semiconductor co., ltd. www.unsemi.com.tw v c part number device marking v rwm (v) (max.) v b (v) (min.) i t (ma) v c @1a (max.) (max.) (@a) i r ( a) (max.) c (pf) (typ.) pin3 to pin1 / pin2 7 7.5 1 10 12 17 10 55 SM712 m72 pin1 / pin2 to pin3 12 13.3 1 20 26 17 1 55 fig1. 8/20 s pulse waveform fig2. esd pulse waveform (according to iec 61000-4-2) fig3. power derating curve electrical characteristics ( @ 25 unless otherwise specified ) characteristic curves 0 5 10 15 20 25 30 120 t r 100 80 60 40 20 0 peak value i pp t d =t i pp /2 test waveform parameters t r =8 s t d =20 s t - time ( s ) i pp - peak pulse current - % of i pp 60ns 10% percent of peak pulse current % 30ns tr = 0.7~1ns time (ns) 90% 100% 0 20 40 60 80 100 120 140 160 180 200 100 40 30 20 10 0 % of rated power 90 80 60 50 a mbient temperature C t a ( o c ) 70
transient voltage suppressors array for esd protection revision january 06, 2014 3 / 3 @ un semiconductor co., ltd. 2014 specifications are subject to change without notice. please refer to www.unsemi.com.tw for current information. SM712 un semiconductor co., ltd. www.unsemi.com.tw millimeters inches symbol min. nom. max. min. nom. max. a 0.89 1.00 1.11 0.035 0.040 0.044 a1 0.01 0.06 0.10 0.001 0.002 0.004 b 0.37 0.44 0.50 0.15 0.18 0.020 c 0.09 0.13 0.18 0.003 0.005 0.007 d 2.80 2.90 3.04 0.110 0.114 0.120 e 1.20 1.30 1.40 0.047 0.051 0.055 e 1.78 1.90 2.04 0.070 0.075 0.081 l 0.35 0.54 0.69 0.014 0.021 0.029 h e 2.10 2.40 2.64 0.083 0.094 0.104 symbol millimeters inches x 0.80 0.031 x1 0.95 0.037 y 0.90 0.035 z 2.00 0.079 soldering footprint so t - 2 3 package outline & dimensions
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