smp100lc trisil? for telecom equipment protection smb (jedec do-214aa) features bidirectional crowbar protection voltage range from 8v to 400v low capacitance from 20pf to 45pf @ 50v low leakage current : i r = 2a max holding current: i h = 150 ma min repetitive peak pulse current: i pp = 100 a (10/1000s) main applications any sensitive equipment requiring protection against lightning strikes and power crossing. these devices are dedicated to central office pro- tection as they comply with the most stressfull standards. their low capacitances make them suitable for adsl. description the smp100lc is a series of low capacitance transient surge arrestors designed for the protec- tion of high debit rate communication equipment. its low capacitance avoids any distortion of the sig- nal and is compatible with digital transmission line cards (xdsl, isdn...). smp100lc series tested and confirmed compati- ble with cooper bussmann telecom circuit pro- tector tcp 1.25a. benefits trisils are not subject to ageing and provide a fail safe mode in short circuit for a better protection. they are used to help equipment to meet main standards such as ul60950, iec950 / csa c22.2 and ul1459. they have ul94 v0 approved resin. smb package is jedec registered (do-214aa). trisils comply with the following standards gr- 1089 core, itu-t-k20/k21, vde0433, vde0878, iec61000-4-5 and fcc part 68. table 1: order codes part number marking smp100lc-8 pl8 smp100lc-25 l25 smp100lc-35 l35 smp100lc-65 l06 smp100lc-90 l09 smp100lc-120 l12 smp100lc-140 l14 smp100lc-160 l16 smp100lc-200 l20 smp100lc-230 l23 smp100lc-270 l27 SMP100LC-320 l32 smp100lc-360 l36 smp100lc-400 l40 figure 1: schematic diagram product specification 1 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
smp100lc table 2: in compliance with the following standards table 3: absolute ratings (t amb = 25c) standard peak surge voltag e (v) waveform voltag e required peak current (a) current waveform minimum serial resistor to meet standard ( ? ) gr-1089 core first level 2500 1000 2/10 s 10/1000 s 500 100 2/10 s 10/1000 s 0 0 gr-1089 core second level 5000 2/10 s 500 2/10 s 0 gr-1089 core intra-building 1500 2/10 s 100 2/10 s 0 itu-t-k20/k21 6000 1500 10/700 s 150 37.5 5/310 s 0 0 itu-t-k20 (iec61000-4-2) 8000 15000 1/60 ns esd contact discharge esd air discharge 0 0 vde0433 4000 2000 10/700 s 100 50 5/310 s 0 0 vde0878 4000 2000 1.2/50 s 100 50 1/20 s 0 0 iec61000-4-5 4000 4000 10/700 s 1.2/50 s 100 100 5/310 s 8/20 s 0 0 fcc part 68, lightning surge type a 1500 800 10/160 s 10/560 s 200 100 10/160 s 10/560 s 0 0 fcc part 68, lightning surge type b 1000 9/720 s 25 5/320 s 0 symbol parameter value unit i pp repetitive peak pulse current (see figure 2) 10/1000 s 8/20 s 10/560 s 5/310 s 10/160 s 1/20 s 2/10 s 100 400 140 150 200 400 500 a i fs fail-safe mode : maximum current (note 1) 8/20 s 5 ka i tsm non repetitive surge peak on-state current (sinusoidal) t = 0.2 s t = 1 s t = 2 s t = 15 mn 24 15 12 4 a i 2 ti 2 t value for fusing t = 16.6 ms t = 20 ms 20 21 a 2 s t stg t j storage temperature range maximum junction temperature -55 to 150 150 c t l maximum lead temperature for soldering during 10 s. 260 c note 1: in fail safe mode, the device acts as a short circuit product specification 2 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
smp100lc table 4: thermal resistances table 5: electrical characteristics (t amb = 25c) symbol parameter value unit r th(j-a) junction to ambient (with recommended footprint) 100 c/w r th(j-l) junction to leads 20 c/w symbol parameter v rm stand-off voltage v br breakdown voltage v bo breakover voltage i rm leakage current i pp peak pulse current i bo breakover current i h holding current v r continuous reverse voltage i r leakage current at v r c capacitance types i rm @ v rm i r @ v r dynamic v bo static v bo @ i bo i h cc max. max. max. max. max. min. typ. typ. note1 note 2 note 3 note 4 note 5 note 6 avav v vmamapfpf smp100lc-8 2 6 5 82515 800 50 (typ.) na 75 smp100lc-25 22 25 40 35 150 na 65 smp100lc-35 32 35 55 55 na 55 smp100lc-65 55 65 85 85 45 90 smp100lc-90 81 90 120 125 40 80 smp100lc-120 108 120 155 160 35 75 smp100lc-140 120 140 185 190 30 65 smp100lc-160 144 160 205 200 30 65 smp100lc-200 180 200 255 250 30 60 smp100lc-230 207 230 295 285 30 60 smp100lc-270 243 270 345 335 30 60 SMP100LC-320 290 320 400 390 25 50 smp100lc-360 325 360 460 450 25 50 smp100lc-400 360 400 540 530 20 45 note 1: i r measured at v r guarantee v br min vr note 2: see functional test circuit 1 note 3: see test circuit 2 note 4: see functional holding current test circuit 3 note 5: v r = 50v bias, v rms =1v, f=1mhz note 6: v r = 2v bias, v rms =1v, f=1mhz product specification 3 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
smp100lc application note in such a stage, parallel function is assumed by one or several trisil, and is used to protect against short duration surge (lightning). during this kind of surges the trisil limits the voltage across the device to be protected at its break over value and then fires. the fuse assumes the series function, and is used to pro- tect the module against long duration or very high current mains disturbances (50/60hz). it acts by safe circuits opening. lightning surge and mains disturbance surges are defined by standards like gr1089, fcc part 68, itu-t k20. figure 8: variation of thermal impedance junction to ambient versus pulse duration (printed circuit board fr4, scu=35m, recommended pad layout) figure 9: relative variation of junction capacitance versus reverse voltage applied (typical values) in wireline applications, analog or digital, both central office and subscriber sides have to be protected. this function is assumed by a combined series / parallel protection stage. 1e-3 1e-2 1e-1 1e+0 1e+1 1e+2 5e+2 1 10 100 t (s) p z/r th(j-a) th(j-a) c [v ] / c [v =2v] rr 12 5 10 20 50 100 300 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 v (v) r f =1mhz v= 1v t = 25c j rms line protection stage protection stage ring relay line ex. analog line card ex. adsl line card or terminal fuse tcp 1.25a t1 t2 smp100lc-xxx typical circuit for subscriber side fuse tcp 1.25a tip s gnd smp100lc-xxx ring s smp100lc-xxx fuse tcp 1.25a tip l gnd ring l typical circuit for central office side product specification 4 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
smp100lc figure 13: ordering information scheme figure 12: test circuit 3 for dynamic i h parameter test procedure 1/ adjust the current level at the i value by short circuiting the ak of the d.u.t. 2/ fire the d.u.t. with a surge current h ? i= 10a, 10/1000s. 3/ the d.u.t. will come back off-state within 50ms maximum. pp this is a go-nogo test which allows to confirm the holding current (i ) level in a functional test circuit. h r v bat =-48v surge generator d.u.t smp 100 lc - xxx trisil surface mount repetitive peak pulse current capacitance voltage 100 = 100a lc = low capacitance 65 = 65v product specification 5 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
smp100lc figure 14: smb package mechanical data figure 15: foot print dimensions (in millimeters) e c l e1 d a1 a2 b 1.52 2.75 2.3 1.52 ref. dimensions millimeters inches min. max. min. max. a1 1.90 2.45 0.075 0.096 a2 0.05 0.20 0.002 0.008 b 1.95 2.20 0.077 0.087 c 0.15 0.41 0.006 0.016 e 5.10 5.60 0.201 0.220 e1 4.05 4.60 0.159 0.181 d 3.30 3.95 0.130 0.156 l 0.75 1.60 0.030 0.063 table 6: ordering information part number marking package weight base qty delivery mode smp100lc-8 pl8 smb 0.11 g 2500 tape & reel smp100lc-25 l25 smp100lc-35 l35 smp100lc-65 l06 smp100lc-90 l09 smp100lc-120 l12 smp100lc-140 l14 smp100lc-160 l16 smp100lc-200 l20 smp100lc-230 l23 smp100lc-270 l27 SMP100LC-320 l32 smp100lc-360 l36 smp100lc-400 l40 product specification 6 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
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