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april 2010 doc id 15524 rev 2 1/11 11 stps20sm100s power schottky rectifier features high current capability avalanche rated low forward voltage drop current high frequency operation insulated package (to-220fpab): ? insulation voltage 2000 v rms ? package capacitance = 12 pf description this single schottky rect ifier is suited for high frequency switch mode power supply. packaged in to-220ab, to-220fpab, d 2 pa k and i 2 pak, this device is intended to be used in notebook, game station and desktop adaptors, providing in these applications a good efficiency at both low and high load. figure 1. electrical characteristics (a) table 1. device summary i f(av) 20 a v rrm 100 v t j (max) 150 c v f (typ) 0.480 v a. v arm and i arm must respect the reverse safe operating area defined in figure 14. v ar and i ar are pulse measurements (t p < 1 s). v r , i r , v rrm and v f , are static characteristics a(1) k(2) a(3) to-220ab stps20sm100st a a k k a a k a a k i 2 pak stps20sm100sr to-220fpab stps20sm100sfp a a k d 2 pak stps20sm100sg i f 2 x i o i o i r i ar v f(i o ) v to v f(2xi o ) v f v i i v v r v rrm "reverse" "forward" v ar x x www.st.com
characteristics stps20sm100s 2/11 doc id 15524 rev 2 1 characteristics to evaluate the conduction losses use the following equation: p = 0.6 x i f(av) + 0.005 x i f 2 (rms) table 2. absolute ratings (limiting values with terminals 1 and 3 short circuited) symbol parameter value unit v rrm repetitive peak reverse voltage 100 v i f(rms) forward rms current 30 a i f(av) average forward current = 0.5 to-220ab, d 2 pak, i 2 pak t c = 125 c 20 a to-220fpab t c = 85 c i fsm surge non repetitive forward current t p = 10 ms sinusoidal, terminals 1 and 3 short circuited 350 a p arm (1) repetitive peak avalanche power t p = 1 s t j = 25 c 15000 w v arm (2) maximum repetitive peak avalanche voltage t p < 1 s t j < 150 c i ar < 37.5 a 120 v v asm (2) maximum single pulse peak avalanche voltage t p < 1 s t j < 150 c i ar < 37.5 a 120 v t stg storage temperature range -65 to + 150 c t j maximum operating junction temperature (3) 150 c 1. for temperature or pulse time duration deratings, refer to figure 4. and figure 5. . more details regarding the avalanche energy measurements and diode validation in the avalanche are provided in the application notes an1768 and an2025. 2. refer to figure 14. 3. condition to avoid thermal runaway for a diode on its own heatsink dptot dtj --------------- 1 rth j a ? () ------------------------- - < table 3. thermal resistance symbol parameter value unit r th(j-c) junction to case to-220ab, d 2 pak, i 2 pa k 1 . 3 c/w to-220fpab 4 table 4. static electrical characteristics (terminals 1 and 3 short circuited) symbol parameter test conditions min. typ. max. unit i r (1) reverse leakage current t j = 25 c v r = v rrm 10 30 a t j = 125 c 10 30 ma t j = 25 c v r = 70 v 5a t j = 125 c 5 ma v f (2) forward voltage drop t j = 25 c i f = 5 a 565 mv t j = 125 c 480 t j = 25 c i f = 10 a 685 t j = 125 c 560 620 t j = 25 c i f = 20 a 800 900 t j = 125 c 630 700 1. pulse test: t p = 5 ms, < 2% 2. pulse test: t p = 380 s, < 2%
stps20sm100s characteristics doc id 15524 rev 2 3/11 figure 2. average forward power dissipation versus average forward current figure 3. average forward current versus ambient temperature ( = 0.5) 0 2 4 6 8 10 12 14 16 18 20 22 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 = 0.05 = 0.1 = 0.2 = 0.5 = 1 t =tp/t tp p f (av)(w) i (av)(a) f 0 2 4 6 8 10 12 14 16 18 20 22 0 25 50 75 100 125 150 r th(j-a) =r th(j-c) r th(j-a) =15c/w t =tp/t tp to-220ab/i2pak to-220fpab i f (av)(a) t (c) amb figure 4. normalized avalanche power derating versus pulse duration figure 5. normalized avalanche power derating versus junction temperature 0.01 0.1 0.01 1 0.1 10 100 1000 1 t (s) p p(t) p (1s) arm p arm 0.001 0 0.2 0.4 0.6 0.8 1 1.2 25 50 75 100 125 150 t (c) j p(t j ) p (25 c) arm arm figure 6. non repetitive surge peak forward current versus overload duration, maximum values figure 7. non repetitive surge peak forward current versus overload duration, maximum values (to-220fpab) 0 40 80 120 160 200 240 280 320 1.e-03 1.e-02 1.e-01 1.e+00 t c =25c t c =75c t c =125c i m t =0.5 to-220ab/i2pak i m (a) t(s) 0 20 40 60 80 100 120 140 160 180 1.e-03 1.e-02 1.e-01 1.e+00 t c =25c t c =75c t c =125c i m t =0.5 to-220fpab i m (a) t(s)
characteristics stps20sm100s 4/11 doc id 15524 rev 2 figure 10. reverse leakage current versus reverse voltage applied (typical values) figure 8. relative variation of thermal impedance junction to case versus pulse duration figure 9. relative variation of thermal impedance junction to case versus pulse duration (to-220fpab) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-03 1.e-02 1.e-01 1.e+00 single pulse t =tp/t tp to-220ab/i2pak tp(s) z th(j-c) /r th(j-c) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 single pulse t =tp/t tp to-220fpab tp(s) z th(j-c) /r th(j-c) 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 0 102030405060708090100 t j =150c t j =125c t j =25c t j =100c t j =75c t j =50c v r (v) i r (ma)
stps20sm100s characteristics doc id 15524 rev 2 5/11 figure 11. junction capacitance versus reverse voltage applied (typical values) figure 12. forward voltage drop versus forward current (terminals 1 and 3 short circuited) figure 13. thermal resistance junction to ambient versus copper surface under tab for d 2 pa k figure 14. reverse safe operating area (t p < 1 s and t j < 150 c) 100 1000 10000 1 10 100 f=1mhz v osc =30mv rms t j =25c v r (v) c(pf) i fm (a) 0 10 20 30 40 0.0 0.2 0.4 0.6 0.8 1.0 1.2 t j =25c (maximum values) t j =125c (maximum values) t j =125c (maximum values) t j =125c (typical values) t j =125c (typical values) v (v) fm 0 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 35 40 s(cm2) r (c/w) th(j-a) epoxy printed board fr4, copper thickness = 35 m) 28 30 32 34 36 38 40 42 44 46 100 110 120 130 140 150 iarm (a) varm (v) operating area forbidden area
package information stps20sm100s 6/11 doc id 15524 rev 2 2 package information epoxy meets ul94, v0 cooling method: by conduction (c) recommended torque value: 0.4 to 0.6 nm in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. table 5. to-220ab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.066 f2 1.14 1.70 0.044 0.066 g 4.95 5.15 0.194 0.202 g1 2.40 2.70 0.094 0.106 h2 10 10.40 0.393 0.409 l2 16.4 typ. 0.645 typ. l4 13 14 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.20 6.60 0.244 0.259 l9 3.50 3.93 0.137 0.154 m 2.6 typ. 0.102 typ. diam. 3.75 3.85 0.147 0.151 a c d l7 dia l5 l6 l9 l4 f h2 g g1 l2 f2 f1 e m
stps20sm100s package information doc id 15524 rev 2 7/11 table 6. to-220fpab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.4 4.6 0.173 0.181 b 2.5 2.7 0.098 0.106 d 2.5 2.75 0.098 0.108 e 0.45 0.70 0.018 0.027 f 0.75 1 0.030 0.039 f1 1.15 1.70 0.045 0.067 f2 1.15 1.70 0.045 0.067 g 4.95 5.20 0.195 0.205 g1 2.4 2.7 0.094 0.106 h 10 10.4 0.393 0.409 l2 16 typ. 0.63 typ. l3 28.6 30.6 1.126 1.205 l4 9.8 10.6 0.386 0.417 l5 2.9 3.6 0.114 0.142 l6 15.9 16.4 0.626 0.646 l7 9.00 9.30 0.354 0.366 dia. 3.00 3.20 0.118 0.126 h a b dia l7 l6 l5 f1 f2 f d e l4 g1 g l2 l3
package information stps20sm100s 8/11 doc id 15524 rev 2 mounting (soldering) the i 2 pak metal slug (heatsink) with alloy, like a surface mount device, is not permitted. a standard through-hole mounting is mandatory. table 7. i 2 pak dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 a1 2.40 2.72 0.094 0.107 b 0.61 0.88 0.024 0.035 b1 1.14 1.70 0.044 0.067 c 0.49 0.70 0.019 0.028 c2 1.23 1.32 0.048 0.052 d 8.95 9.35 0.352 0.368 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.195 0.203 e 10 10.40 0.394 0.409 l 13 14 0.512 0.551 l1 3.50 3.93 0.138 0.155 l2 1.27 1.40 0.050 0.055 e l2 l1 b1 d a1 c c2 a b e e1 l
stps20sm100s package information doc id 15524 rev 2 9/11 figure 15. d 2 pak footprint (dimensions in mm) table 8. d 2 pak dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 a1 2.49 2.69 0.098 0.106 a2 0.03 0.23 0.001 0.009 b 0.70 0.93 0.027 0.037 b2 1.14 1.70 0.045 0.067 c 0.45 0.60 0.017 0.024 c2 1.23 1.36 0.048 0.054 d 8.95 9.35 0.352 0.368 e 10.00 10.40 0.393 0.409 g 4.88 5.28 0.192 0.208 l 15.00 15.85 0.590 0.624 l2 1.27 1.40 0.050 0.055 l3 1.40 1.75 0.055 0.069 m 2.40 3.20 0.094 0.126 r 0.40 typ. 0.016 typ. v2 0 8 0 8 g l l3 l2 b b2 e * flat zone no less than 2mm a c2 d r a2 m v2 c a1 * 16.90 10.30 8.90 3.70 5.08 1.30
ordering information stps20sm100s 10/11 doc id 15524 rev 2 3 ordering information 4 revision history table 9. ordering information order code marking package weight base qty delivery mode stps20sm100st ps20sm100st to-220ab 2.2 g 50 tube stps20sm100sfp ps20sm100sfp to-220fpab 1.70 g 50 tube stps20sm100sr ps20sm100sr i 2 pak 1.49 g 50 tube STPS20SM100SG-TR ps20sm100sg d 2 pak 1.48 g 1000 tape and reel table 10. document revision history date revision changes 25-mar-2009 1 first issue. 16-apr-2010 2 updated package graphic for to-220ab on front page and in ta b l e 5 .
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