249 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. sxx12x series 12 amp standard scrs speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12a scrs sxx12x series description excellent unidirectional switches for phase control applications such as heating and motor speed controls. standard phase control scrs are triggered with few milliamperes of current at less than 1.5v potential. features & bene?ts t 3 p ) 4 d p n q m j b o u t ( m b t t o q b t t j w b u f e junctions t 7 p m u b h f d b q b c j m j u z v q to 1000 v t 4 v s h f d b q b c j m j u z v q u p 120 a main features symbol value unit i t(rms) 12 a v drm /v rrm 400 to 1000 v i gt 20 ma schematic symbol absolute maximum ratings symbol parameter test conditions value unit i t(rms) rms on-state current sxx12r sxx12d sxx12v t c = 105c 12 a i tsm peak non-repetitive surge current single half cycle; f = 50hz; t j (initial) = 25c 100 a single half cycle; f = 60hz; t j (initial) = 25c 120 i 2 ti 2 t value for fusing t p = 8.3 ms 60 a 2 s di/dt critical rate of rise of on-state current f = 60hz; t j = 125c 100 a/s i gm peak gate current t j = 125c 2a p g(av) average gate power dissipation t j = 125c 0.5 w t stg storage temperature range -40 to 150 c t j operating junction temperature range -40 to 125 note: xx = voltage applications typical applications are capacitive discharge systems for strobe lights, nailers, staplers and gas engine ignition. also controls for power tools, home/brown goods and white goods appliances. a k g
250 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12 amp standard scrs sxx12x series speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. electrical characteristics (t j = 25c, unless otherwise speci?ed) symbol test conditions value unit i gt v d = 12v r l = 60 8 max. 20 ma v gt min. 1 max. 1.5 v dv/dt v d = v drm ; gate open; t j = 100c 400v min. 350 v/s 600v 300 800v 250 1000v 100 v d = v drm ; gate open; t j = 125c 400v 250 600v 225 800v 200 v gd v d = v drm r l = 3.3 k 8 t j = 125c min. 0.2 v i h i t = 200ma (initial) max. 40 ma t q i t = 2a; t p = 50s; dv/dt = 5v/s; di/dt = 30a/s max. 35 s t gt i g = 2 x i gt pw = 15s i t = 20a typ. 2 s static characteristics symbol test conditions value unit v tm i t = 24a; t p = 380 s max. 1.6 v i drm / i rrm v drm = v rrm t j = 25c 400 C 600v max. 10 a 800 C 1000v 20 t j = 100c 400 C 800v 500 1000v 3000 t j = 125c 400 C 800v 1000 thermal resistances symbol parameter value unit r r (j-c) junction to case (ac) sxx12r 1.5 c/w sxx12v 1.6 sxx12d 1.4 r r (j-a) junction to ambient sxx12r 40 c/w sxx12v 70 note: xx = voltage
251 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. sxx12x series 12 amp standard scrs speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12a scrs figure 1: normalized dc gate trigger current vs. junction temperature figure 2: normalized dc gate trigger voltage vs. junction temperature 0.0 0. 5 1. 0 1. 5 2.0 -40 -1 5 10 3 5 60 8 5 100 12 5 junction temperature (t j ) - (c) ratio of i gt / i gt (t j = 2 5 c) 0.0 0. 5 1. 0 1. 5 2.0 -40 -1 5 10 3 5 60 8 5 110 12 5 junction temperature (t j ) - (c) ratio of v gt / v gt (t j = 2 5 c) figure 5: power dissipation (typical) vs. rms on-state current 0.0 0. 5 1. 0 1. 5 2.0 -40 -1 5 10 3 5 60 8 5 110 12 5 junction temperature (t j ) - (c) ratio of i h / i h (t j = 2 5 c) figure 3: normalized dc holding current vs. junction temperature figure 4: on-state current vs. on-state voltage (typical) t j = 2 5 c 0 10 20 30 40 5 0 60 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1. 5 1.6 instantaneous on-state voltage (v t ) C volts instantaneous on-state current (i t ) C amps 0 2 4 6 8 10 12 0 2 4 6 8 10 1 2 rms on-state current [i t(rms )] - (amps) average on-state power dissipation [p d(av) ] - (watts)
252 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12 amp standard scrs sxx12x series speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. figure 6: maximum allowable case temperature vs. rms on-state current figure 7: maximum allowable case temperature vs. average on-state current 9 5 100 10 5 110 11 5 120 12 5 130 current waveform: sinusoidal load: resistive or inductive conduction angle: 180 0 1 2 3 4 5 6 7 8 average on-state current [i t(ave) ] - amps maximum allowable case temperature (t c ) - c 9 5 100 10 5 110 11 5 120 12 5 130 current waveform: sinusoidal load: resistive or inductive conduction angle: 180 0 2 4 6 8 10 12 1 4 rms on-state current [i t(rms) ] - amps maximum allowable case temperature (t c )- c figure 8: maximum allowable ambient temperature vs. rms on-state current 0 20 40 60 80 100 120 current waveform: sinusoidal load: resistive or inductive conduction angle: 180 free air rating sxx12v sxx12r 0.0 0. 5 1.0 1. 5 2.0 2. 5 rms on-state current [i t(rms) ] - amps maximum allowable ambient temperature (t a ) - c figure 9: maximum allowable ambient temperature vs. average on-state current 0 20 40 60 80 100 120 5 . 1 0 . 1 5 . 0 0 . 0 current waveform: sinusoidal load: resistive or inductive conduction angle: 180 free air rating sxx12r sxx12v average on-state current [i t(ave) ] - amps maximum allowable ambient temperature (t a ) - c note: xx = voltage figure 10: peak capacitor discharge current 10 100 1000 0 . 0 5 0 . 5 2 0 . 5 5 . 0 peak discharge current (i tm ) - amps pulse current duration (t w ) - ms i trm t w figure 11: peak capacitor discharge current derating 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 2 5 5 0 7 5 100 12 5 1 5 0 normalized peak current case temperature (t c ) - c
253 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. sxx12x series 12 amp standard scrs speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12a scrs 1 10 100 1000 0 0 0 1 0 0 1 0 1 1 peak surge (non-repetitive) on-state current (i tsm ) C amps surge current duration - full cycles figure 12: surge peak on-state current vs. number of cycles supply frequency: 60 hz sinusoidal load: resistive rms on-state current: [i t(rms) ]: maximum rated value at speci?ed case temperature notes: 1. gate control may be lost during and immediately following surge current interval. 2. overload may not be repeated until junction temperature has returned to steady-state rated value. soldering parameters re?ow 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 190 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 re?ow - 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 280c time temperature t p t l t s(max) t s(min) 25 t p t l t s time to peak temperature preheat p r e h eat ramp-up ramp-up ramp-down r am p - do
254 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12 amp standard scrs sxx12x series speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. physical speci?cations environmental speci?cations test speci?cations and conditions ac blocking mil-std-750, m-1040, cond a applied peak ac voltage @ 125c for 1008 hours temperature cycling mil-std-750, m-1051, 100 cycles; -40c to +150c; 15-min dwell-time temperature/ humidity eia / jedec, jesd22-a101 1008 hours; 320v - dc: 85c; 85% rel humidity high temp storage mil-std-750, m-1031, 1008 hours; 150c low-temp storage 1008 hours; -40c thermal shock mil-std-750, m-1056 10 cycles; 0c to 100c; 5-min dwell- time at each temperature; 10 sec (max) transfer time between temperature autoclave eia / jedec, jesd22-a102 168 hours (121c at 2 atms) and 100% r/h resistance to solder heat mil-std-750 method 2031 solderability ansi/j-std-002, category 3, test a lead bend mil-std-750, m-2036 cond e terminal finish 100% matte tin-plated body material ul recognized epoxy meeting ?ammability classi?cation 94v-0 lead material copper alloy design considerations careful selection of the correct device for the applications operating parameters and environment will go a long way toward extending the operating life of the thyristor. good design practice should limit the maximum continuous current through the main terminals to 75% of the device rating. other ways to ensure long life for a power discrete semiconductor are proper heat sinking and selection of voltage ratings for worst case conditions. overheating, overvoltage (including dv/dt), and surge currents are the main killers of semiconductors. correct mounting, soldering, and forming of the leads also help protect against component damage. dimensions to-220ab (r-package) non-isolated mounting tab common with center lead dimension inches millimeters min max min max a 0.380 0.420 9.65 10.67 b 0.105 0.115 2.67 2.92 c 0.230 0.250 5.84 6.35 d 0.590 0.620 14.99 15.75 e 0.142 0.147 3.61 3.73 f 0.110 0.130 2.79 3.30 g 0.540 0.575 13.72 14.61 h 0.025 0.035 0.64 0.89 j 0.195 0.205 4.95 5.21 k 0.095 0.105 2.41 2.67 l 0.060 0.075 1.52 1.91 m 0.085 0.095 2.16 2.41 n 0.018 0.024 0.46 0.61 o 0.178 0.188 4.52 4.78 p 0.045 0.060 1.14 1.52 r 0.038 0.048 0.97 1.22 k j a h g b f e c d l r t c measuring point anode o p n m .276 7. 0 1 . 5 26 13.36 .320 8.13 area (ref.) 0.17 in 2 notch in gate lead to id. non-isolated tab gate cathode anode note: maximum torque to be applied to mounting tab is 8 in-lbs. (0.904 nm).
255 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. sxx12x series 12 amp standard scrs speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12a scrs dimensions to-251aa (v/i-package) v/i-pak through hole dimension inches millimeters min max min max a 0.040 0.050 1.02 1.27 b 0.235 0.245 5.97 6.22 c 0.350 0.375 8.89 9.53 d 0.205 0.213 5.21 5.41 e 0.255 0.265 6.48 6.73 f 0.027 0.033 0.69 0.84 g 0.087 0.093 2.21 2.36 h 0.085 0.095 2.16 2.41 i 0.176 0.184 4.47 4.67 j 0.018 0.023 0.46 0.58 k 0.038 0.044 0.97 1.12 l 0.018 0.023 0.46 0.58 area: 0.040 in 2 t c measuring point gate anode cathode g i e d a b c f j h k l 5 .28 .208 5 .34 .210 anode dimensions to-252aa (d-package) d-pak surface mount dimension inches millimeters min max min max a 0.040 0.050 1.02 1.27 b 0.235 0.245 5.97 6.22 c 0.106 0.113 2.69 2.87 d 0.205 0.213 5.21 5.41 e 0.255 0.265 6.48 6.73 f 0.027 0.033 0.69 0.84 g 0.087 0.093 2.21 2.36 h 0.085 0.095 2.16 2.41 i 0.176 0.184 4.47 4.67 j 0.018 0.023 0.46 0.58 k 0.038 0.044 0.97 1.12 l 0.018 0.023 0.46 0.58 m 0.000 0.004 0.00 0.10 n 0.021 0.027 0.53 0.69 o0505 gate anode cathode t c measuring point g i d e a b c f 5 .28 .208 5 .34 .210 : 0.040 in 2 area m o n h j l k .118 3 .063 1.60 .071 1.80 .264 6.71 .264 6.71 .181 4.60 pad layout for to-252aa (d-package)
256 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 12 amp standard scrs sxx12x series speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. product selector packing options part number voltage gate sensitivity type package 400v 600v 800v 1000v sxx12r xxxx 20ma sensitive scr to-220r sxx12v xxxx 20ma standard scr to-251 sxx12d xxxx 20ma standard scr to-252 note: xx = voltage part number marking weight packing mode base quantity sxx12r sxx12r 2.2 g bulk 500 sxx12rtp sxx12r 2.2 g tube 500 sxx12dtp sxx12d 0.3 g tube 750 sxx12drp sxx12d 0.3 g embossed carrier 2500 sxx12vtp sxx12v 0.4 g tube 750 note: xx = voltage 0. 5 12 (13.0) arbor hole diameter dc xxxxxx xxxxxx dc xxxxxx dc xxxxxx xx gate mt1 / cathode mt2 / anode 0.63 (16.0) 0.1 5 7 (4.0) 0.64 (16.3) 12.99 (330.0) 0. 5 24 (13.3) 0.31 5 (8.0) 0.0 5 9 dia (1. 5 ) * * cover tape xx xx direction of feed dimensions are in inches (and millimeters). to-252 embossed carrier reel pack (rp) speci?cations meets all eia-481-2 standards part numbering system part marking system s 60 12 r 5 6 device type s: scr voltage rating 40: 400v 60: 600v 80: 800v k0: 1000v current rating 12: 12a sensitivity & type (blank): 20ma package type r: to-220 non-isolated v: to-2 5 1 (v/i-pak) d: to-2 5 2 (d-pak) lead form dimensions xx: lead form option s6012drp yxxxx to-2 5 2aa C (d package) to-2 5 1aa C (v package) yxxxx s6012rtp to-220ab (r package) ? ?
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