sm15t series vishay semiconductors formerly general semiconductor document number 88380 www.vishay.com 03-may-02 1 new product surface mount t rans z orb transient voltage suppressors breakdown voltage 6.8 to 220v peak pulse power 1500w devices for bidirectional applications for bi-directional devices, use suffix ca (e.g. sm15t10ca). electrical characteristics apply in both directions. maximum ratings & thermal characteristics ratings at 25? ambient temperature unless otherwise specified. parameter symbol value unit peak pulse power dissipation with p ppm minimum 1500 w a 10/1000 s waveform (1)(2) (fig. 1) peak pulse current with a 10/1000 s waveform (1) (fig. 3) i ppm see next table a power dissipation on infinite heatsink, t a = 50? p m(av) 6.5 w peak forward surge current 10ms single half sine-wave i fsm 200 a uni-directional only (2) typical thermal resistance junction to ambient air (3) r ja 75 ?/w typical thermal resistance junction to leads r jl 15 ?/w operating junction and storage temperature range t j , t stg 65 to +150 ? notes: (1) non-repetitive current pulse, per fig.3 and derated above t a = 25? per fig. 2 (2) mounted on 0.31 x 0.31 (8.0 x 8.0mm) copper pads to each terminal (3) mounted on minimum recommended pad layout features ?low profile package with built-in strain relief for surface mounted applications ?glass passivated junction ?low inductance ?excellent clamping capability ?1500w peak pulse power capability with a 10/1000 s waveform, repetition rate (duty cycle): 0.01% ?fast response time: theoretically (with no parisitic inductance) less than 1ps from 0 volts to v (br) for undirectional and 5ns for bidirectional types high temperature soldering: 250?/10 seconds at terminals ?plastic package has underwriters laboratory flammability classification 94v-0 0.280 (7.11) 0.260 (6.60) 0.012 (0.305) 0.006 (0.152) 0.008 (0.203) max. 0.320 (8.13) 0.305 (7.75) 0.060 (1.52) 0.030 (0.76) 0.245 (6.22) 0.220 (5.59) 0.126 (3.20) 0.114 (2.90) 0.103 (2.62) 0.079 (2.06) cathode band dimensions in inches and (millimeters) do-214ab (smc j-bend) 0.185 max. (4.69 max.) 0.121 min. (3.07 min.) 0.060 min. (1.52 min.) 0.320 ref mounting pad layout mechanical data case: jedec do-214ab (smc) molded plastic over passivated junction terminals: solder plated, solderable per mil-std-750, method 2026 polarity: for uni-directional types the band denotes the cathode, which is positive with respect to the anode under normal tvs operation standard packaging: 12mm tape (eia std rs-481) weight: 0.003 oz., 0.093 g packaging codes ?options (antistatic): 51 1k per bulk box, 10k/carton 57 850 per 7" plastic reel (16mm tape), 8.5k/carton 9a 3.5k per 13" plastic reel (16mm tape), 35k/carton
sm15t series vishay semiconductors formerly general semiconductor www.vishay.com document number 88380 2 03-may-02 sm15t6v8a gde7 gde7 5.80 1000 6.45 7.14 10 10.5 143 13.4 746 5.7 sm15t7v5a gdk7 bdk7 6.40 500 7.13 7.88 10 11.3 132 14.5 690 6.1 sm15t10a gdt7 bdt7 8.55 10.0 9.50 10.5 1.0 14.5 103 18.6 538 7.3 sm15t12a gdx7 bdx7 10.2 5.0 11.4 12.6 1.0 16.7 90.0 21.7 461 7.8 sm15t15a geg7 geg7 12.8 1.0 14.3 15.8 1.0 21.2 71.0 27.2 368 8.4 sm15t18a gem7 bem7 15.3 1.0 17.1 18.9 1.0 25.2 59.5 32.5 308 8.8 sm15t22a get7 bet7 18.8 1.0 20.9 23.1 1.0 30.6 49.0 39.3 254 9.2 sm15t24a gev7 gev7 20.5 1.0 22.8 25.2 1.0 33.2 45.0 42.8 234 9.4 sm15t27a gex7 bex7 23.1 1.0 25.7 28.4 1.0 37.5 40.0 48.3 207 9.6 sm15t30a gfe7 bfe7 25.6 1.0 28.5 31.5 1.0 41.5 36.0 53.5 187 9.7 sm15t33a gfg7 gfg7 28.2 1.0 31.4 34.7 1.0 45.7 33.0 59.0 169 9.8 sm15t36a gfk7 bfk7 30.8 1.0 34.2 37.8 1.0 49.9 30.0 64.3 156 9.9 sm15t39a gfm7 bfm7 33.3 1.0 37.1 41.0 1.0 53.9 28.0 69.7 143 10.0 sm15t68a ggg7 ggg7 58.1 1.0 64.6 71.4 1.0 92.0 16.3 121 83 10.4 sm15t100a ggv7 ggv7 85.5 1.0 95.0 105 1.0 137 11.0 178 56 10.6 sm15t150a ghk7 ghk7 128 1.0 143 158 1.0 207 7.20 265 38 10.8 sm15t200a ghr7 ghr7 171 1.0 190 210 1.0 274 5.50 353 28 10.8 sm15t220a ghr8 ghr8 188 1.0 209 231 1.0 328 4.60 388 26 10.8 notes: (1) for bi-directional devices add suffix ca instead of a (2) v br measured after i t applied for 300s square wave pulse (3) for bipolar devices with v r =10 volts or under, the i t limit is doubled application notes a 1500w (smc) device is normally selected when the threat of transients is from lightning induced transients, conducted via ext ernal leads or i/o lines. it is also used to protect against switching transients induced by large coils or industrial motors. source impedance at component level in a system is usually high enough to limit the current within the peak pulse current (i pp ) rating of this series. in an overstress condition, the failure mode is a short circuit. electrical characteristics (t a =25 c unless otherwise noted) type (1) device marking code uni bi standoff voltage v rm (v) leakage current (3) i rm @v rm ( ? ) breakdown voltage v br @ i t (2) (v) min max clamping voltage v c @ i pp (10/1000?) (v) (a) test current i t (ma) clamping voltage v c @ i pp (8/20?) (v) (a) t max 10 -4 /?
sm15t series vishay semiconductors formerly general semiconductor document number 88380 www.vishay.com 03-may-02 3 ratings and characteristic curves (t a = 25 c unless otherwise noted) c j junction capacitance (pf) fig. 4 typical junction capacitance uni-directional 0 25 50 75 100 0 75 25 50 100 125 150 175 200 peak pulse power (p pp ) or current (i pp ) derating in percentage, % t a ambient temperature ( c) 10 100 1,000 10,000 20,000 10 1 100 400 v wm reverse stand-off voltage (v) fig. 2 pulse derating curve p ppm peak pulse power (kw) fig. 1 peak pulse power rating curve 0.1 1 10 100 0.1 s 1.0 s10 s t d pulse width (sec.) 100 s 1.0ms 10ms 0.31 x 0.31" (8.0 x 8.0mm) copper pad areas t j = 25 c f = 1.0mhz vsig = 50mvp-p measured at zero bias v r , measured at stand-off voltage, v wm fig. 6 - maximum non-repetitive forward surge current uni-directional use only 1 10 100 10 100 200 peak forward surge current, amperes number of cycles at 60hz 8.3ms single half sine-wave (jedec method) t j = t j max. uni-directional bi-directional t p pulse duration (sec) transient thermal impedance ( c/w) fig. 5 typical transient thermal impedance 0.1 1.0 10 100 0.001 0.01 0.1 1 10 100 1000 0 50 100 150 i ppm peak pulse current, % i rsm fig. 3 pulse waveform t j = 25 c pulse width (td) is defined as the point where the peak current decays to 50% of i ppm tr = 10 sec. peak value i ppm half value ipp i ppm 2 td 10/1000 sec. waveform as defined by r.e.a. 0 1.0 2.0 3.0 4.0 t time (ms)
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