dimensions in inches and (millimeters) sma/do-214ac features for surface mounted application low profile package built-in strain relief glass passivated junction excellent clamping capability fast response time: typically less than 1.0ps from 0 volt to bv min. typical i r less than 1 a above 10v high temperature so ldering guaranteed: 260 o c / 10 seconds at terminals plastic material used carries underwriters laboratory flammability classification 94v-0 400 watts peak pulse power capabilit y with a 10 x 1000 us waveform by 0.01% duty cycle (300w above 78v). mechanical data case: molded plastic terminals: pure tin plated lead free, polarity: indicated by cathode band standard packaging: 12mm tape weight: 0.064 gram maximum ratings and electrical characteristics rating at 25 o c ambient temperature unless otherwise specified. type number symbol value units p eak p ower d issipation at t a =25 o c, tp=1ms( n ote 1) p pk minimum 400 watts steady state power dissipation pd 1 watts peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method) (note 2, 3) i fsm 40.0 amps maximum instantaneous forward voltage at 25.0a for unidirectional only v f 3.5 volts operating and storage temperature range t j , t stg -55 to + 150 o c notes: 1. non-repetitive current pulse per fig. 3 and derated above t a =25 o c per fig. 2. 2. mounted on 5.0mm 2 (.013 mm thick) copper pads to each terminal. 3. 8.3ms single half sine-wave or equival ent square wave, duty cycle=4 pulses per minute maximum. devices for bipolar applications 1. for bidrectional use c or ca suffix for types smaj5.0 through types smaj188. 2. electrical characteristics apply in both directions. smaj series 400watts surface mount transient voltage suppressor http://www.luguang.cn mail:lge@luguang.cn
ratings and characteristic curves (smaj series) fig.4- maximum non-repetitive peak forward surge current peak forward surge current. (a) 1 10 100 0 10 40 30 20 50 number of cycles at 60hz 8.3ms single half sine wave jedec method tj=tj max. fig.5- typical junction capacitance cj, junction capacitance, pf 1 10 200 100 10 100 1000 10000 v(br), breakdown voltage. (v) tj=25 c f=1.0mhz vsig=50mvp-p 0 measured at zero bias measured at stand-off voltage,v wm fig.1- peak pulse power rating curve pppm, peak pulse power, kw 0.1 s 1.0 s 10 s 100 s 1.0ms 10ms 0.1 1 10 100 td. pulse width, sec. 0.2" sq 5.0mm copper pad areas 2 non-repetitive pulse waveform shown in fig. 3 t =25 c a 0 fig.3- pulse waveform clamping power 0 1.0 2.0 3.0 4.0 0 50 150 100 t, time, ms lppm, peak pulse current % pulse width (td) is defined as the point where the peak current decays to 50% of lppm tr=10 sec. 10/1000 sec. waveform as defined by r.e.a. td 2 peak value lppm half value- lpp fig.2- pulse derating curve peak pulse power (pppm) or current (lpp) derating in percentage, % 0 25 50 75 100 125 150 175 200 0 25 50 75 100 ta, ambient temperature. c o smaj series 400watts surface mount transient voltage suppressor http://www.luguang.cn mail:lge@luguang.cn
uni bi smaj5.0a smaj5.0ca ae we 5.00 6.40 7.00 10 9.2 43.5 800 smaj6.0a smaj6.0ca ag wg 6.00 6.67 7.37 10 10.3 38.8 800 smaj6.5a smaj6.5ca ak wk 6.50 7.22 7.98 10 11.2 35.7 500 smaj7.0a smaj7.0ca am wm 7.00 7.78 8.60 10 12.0 33.3 200 smaj7.5a smaj7.5ca ap wp 7.50 8.33 9.21 1 12.9 31.0 100 smaj8.0a smaj8.0ca ar wr 8.00 8.89 9.83 1 13.6 29.4 50 smaj8.5a smaj8.5ca at wt 8.50 9.44 10.40 1 14.4 27.8 20 smaj9.0a smaj9.0ca av wv 9.00 10.00 11.10 1 15.4 26.0 10 smaj10a smaj10ca ax wx 10.00 11.10 12.30 1 17.0 23.5 5 smaj11a smaj11ca az wz 11.00 12.20 13.50 1 18.2 22.0 5 smaj12a smaj12ca be xe 12.00 13.30 14.70 1 19.9 20.1 5 smaj13a smaj13ca bg xg 13.00 14.40 15.90 1 21.5 18.6 5 smaj14a smaj14ca bk xk 14.00 15.60 17.20 1 23.2 17.2 5 smaj15a smaj15ca bm xm 15.00 16.70 18.50 1 24.4 16.4 5 smaj16a smaj16ca bp xp 16.00 17.80 19.70 1 26.0 15.4 5 smaj17a smaj17ca br xr 17.00 18.90 20.90 1 27.6 14.5 5 smaj18a smaj18ca bt xt 18.00 20.00 22.10 1 29.2 13.7 5 smaj20a smaj20ca bv xv 20.00 22.20 24.50 1 32.4 12.3 5 smaj22a smaj22ca bx xx 22.00 24.40 26.90 1 35.5 11.3 5 smaj24a smaj24ca bz xz 24.00 26.70 29.50 1 38.9 10.3 5 smaj26a smaj26ca ce ye 26.00 28.90 31.90 1 42.1 9.5 5 smaj28a smaj28ca cg yg 28.00 31.10 34.40 1 45.4 8.8 5 smaj30a smaj30ca ck yk 30.00 33.30 36.80 1 48.4 8.3 5 smaj33a smaj33ca cm ym 33.00 36.70 40.60 1 53.3 7.5 5 smaj36a smaj36ca cp yp 36.00 40.00 44.20 1 58.1 6.9 5 smaj40a smaj40ca cr yr 40.00 44.40 49.10 1 64.5 6.2 5 smaj43a smaj43ca ct yt 43.00 47.80 52.80 1 69.4 5.8 5 smaj45a smaj45ca cv yv 45.00 50.00 55.30 1 72.7 5.5 5 smaj48a smaj48ca cx yx 48.00 53.30 58.90 1 77.4 5.2 5 smaj51a smaj51ca cz yz 51.00 56.70 62.70 1 82.4 4.9 5 smaj54a smaj54ca re ze 54.00 60.00 66.30 1 87.1 4.6 5 smaj58a smaj58ca rg zg 58.00 64.40 71.20 1 93.6 4.3 5 smaj60a smaj60ca rk zk 60.00 66.70 73.70 1 96.8 4.1 5 smaj64a smaj64ca rm zm 64.00 71.10 78.60 1 103.0 3.9 5 smaj70a smaj70ca rp zp 70.00 77.80 86.00 1 113.0 3.5 5 smaj75a smaj75ca rr zr 75.00 83.30 92.10 1 121.0 3.3 5 smaj78a smaj78ca rt zt 78.00 86.70 95.80 1 126.0 3.2 5 smaj85a smaj85ca rv zv 85.00 94.40 104.00 1 137.0 2.9 5 smaj90a smaj90ca rx zx 90.00 100.00 111.00 1 146 2.7 5 smaj100a smaj100ca rz zz 100.00 111.00 123.00 1 162 2.5 5 smaj110a smaj110ca se ve 110.00 122.00 135.00 1 177 2.3 5 smaj120a smaj120ca sg vg 120.00 133.00 147.00 1 193 2.1 5 smaj130a smaj130ca sk vk 130.00 144.00 159.00 1 209 1.9 5 smaj150a smaj150ca sm vm 150.00 167.00 185.00 1 243 1.6 5 smaj160a smaj160ca sp vp 160.00 178.00 197.00 1 259 1.5 5 smaj170a smaj170ca sr vr 170.00 189.00 209.00 1 275 1.5 5 smaj180a smaj180ca st vt 180.00 201.00 222.00 1 292 1.4 5 smaj200a smaj200ca sv vv 200.00 224.00 247.00 1 324 1.2 5 smaj220a smaj220ca sx vx 220.00 246.00 272.00 1 356 1.1 5 smaj250a smaj250ca sz vz 250.00 279.00 309.00 1 405 1.0 5 smaj300a smaj300ca te ue 300.00 335.00 371.00 1 486 0.8 5 smaj350a smaj350ca tg ug 350.00 391.00 432.00 1 567 0.7 5 SMAJ400A smaj400ca tk uk 400.00 447.00 494.00 1 648 0.6 5 smaj440a smaj440ca tm um 440.00 492.00 543.00 1 713 0.6 5 for bidirectional type having vrwm of 10 volts and less, the ir limit is double. for parts without a , the vbr is 10% certified rohs compliant ul file # e223026 breakdown voltage v br (v) min. @ i t breakdown voltage v br (v) max. @ i t test current (i t ) ma maximum clamping voltage @i pp v c (v) peak pulse current i pp (a) reverse leakage @ v rwm i r (a) uni-polar bi-polar device marking code reverse standoff voltage v rwm (v) smaj series 400watts surface mount transient voltage suppressor r http://www.luguang.cn mail:lge@luguang.cn electrical characteristics (ta=25 o c unless otherwise noted)
this device is designed specifically for application notes: transiient voltage suppression from threats generated by esd for board levelload r ecommended pad layout switching components. the pad dimensions should be 0.010" longer than the contact size in the lead axis. this allows a solder fillet the wide leads assure a large surface contact to form, see figure below. contact factory for soldering for good heat disipation, and a low resistance methods. path for surge current flow to ground. this series is designed to optimize board space and for use with surface mount technology automated assembly equipment. they can be easily mounted on printed circuit boards and ceramic substrates to protect sensitive components from transient voltage damage. dimensions in inches and (millimeters) smaj series 400watts surface mount transient voltage suppressor http://www.luguang.cn mail:lge@luguang.cn
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