october 2011 doc id 019045 rev 1 1/9 9 stps20m60s power schottky rectifier features high current capability avalanche rated low forward voltage drop high frequency operation description the stps20m60s is a single schottky diode, suited for high frequency switch mode power supply. packaged in to-220ab, i 2 pak and d 2 pak, this device is intended to be used in notebook, game station and desktop adapters, providing in these aplications a good efficiency at both low and high load. figure 1. electrical characteristics (a) table 1. device summary symbol value i f(av) 20 a v rrm 60 v v f (typ) 0.365 v t j (max) 150 c a. v arm and i arm must respect the reverse safe operating area defined in figure 12 . 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 a k k a a k k a a k to-220ab stps20m60st i 2 pak stps20m60sr d 2 pak STPS20M60SG-TR k a a 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 stps20m60s 2/9 doc id 019045 rev 1 1 characteristics to evaluate the conduction losses use the following equation: p = 0.380 x i f(av) + 0.0063 x i f 2 (rms) table 2. absolute ratings (limiting values with terminals 1 and 3 short circuited at t amb = 25 c, unless otherwise specified) symbol parameter value unit v rrm repetitive peak reverse voltage 60 v i f(rms) forward rms current 90 a i f(av) average forward current, = 0.5 t c = 135 c per package 20 a i fsm surge non repetitive forward current t p = 10 ms sine-wave 600 a p arm (1) 1. for temperature or pulse time duration deratings, please refer to figure 4 and 5 . more details regarding the avalanche energy measurements and diode validation in the avalanc he are provided in the application notes an1768 and an2025. repetitive peak avalanche power t j = 25 c, t p = 1 s 26400 w v arm (2) 2. see figure 12 maximum repetitive peak avalanche voltage t p < 1 s, t j < 150 c, i ar < 99 a 80 v v asm (2) maximum single-pulse peak avalanche voltage t p < 1 s, t j < 150 c, i ar < 99 a 80 v t stg storage temperature range -65 to +175 c t j maximum operating junction temperature (3) 3. condition to avoid thermal runaway for a diode on its own heatsink 150 c table 3. thermal resistance symbol parameter value unit r th(j-c) junction to case 1.0 c/w table 4. static electrical characteristics (terminals 1 and 3 short circuited) symbol parameter test conditions min. typ. max. unit i r (1) 1. pulse test: t p = 5 ms, < 2 % reverse leakage current t j = 25 c v r = v rrm - 30 125 a t j = 125 c - 20 75 ma v f (2) 2. pulse test: t p = 380 s, < 2 % forward voltage drop t j = 25 c i f = 10 a - 0.465 0.500 v t j = 125 c - 0.365 0.405 t j = 25 c i f = 20 a - 0.520 0.565 t j = 125 c - 0.450 0.505 dptot dtj < 1 rth(j-a)
stps20m60s characteristics doc id 019045 rev 1 3/9 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 0 4 8 1216202428 p (w) f(av) = 1 = 0.5 = 0.2 = 0.1 = 0.05 t = t / t p t p i (a) f(av) 0 4 8 12 16 20 24 0 25 50 75 100 125 150 i (a) f(av) r th(j-a) = r th(j-c) t (c) amb figure 4. normalized avalanche power derating versus pulse duration figure 5. normalized avalanche power derating versus junction temperature 0.001 0.01 0.1 0.01 1 0.1 10 100 1000 1 p(t p ) p (1s) arm arm t (s) p 0 0.2 0.4 0.6 0.8 1 1.2 25 50 75 100 125 150 p(t) p (25 c) arm j arm t (c) j figure 6. non repetitive surge peak forward current versus overload duration (maximum values) figure 7. relative variation of thermal impedance junction to case versus pulse duration 0 50 100 150 200 250 300 350 1.e-03 1.e-02 1.e-01 1.e+00 i (a) m i m t = 0.5 t = 25 c c t = 75 c c t = 125 c c t(s) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-04 1.e-03 1.e-02 1.e-01 1.e+00 z/r th(j-c) th(j-c) single pulse t (s) p
characteristics stps20m60s 4/9 doc id 019045 rev 1 figure 12. reverse safe operating area (t p < 1 s and t j < 150 c) figure 8. reverse leakage current versus reverse voltage applied (typical values) figure 9. junction capacitance versus reverse voltage applied (typical values) 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 0 102030405060 i (ma) r v (v) r t = 25 c j t = 50 c j t = 75 c j t = 125 c j t = 150 c j t = 100 c j 100 1000 10000 1 10 100 c(pf) v (v) r f = 1 mhz v = 30 mv t = 25 c osc rms j figure 10. forward voltage drop versus forward current figure 11. thermal resistance junction to ambient versus copper surface under tab 0.1 1.0 10.0 100.0 1000.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 i (a) fm (maximum values) t = 25 c j (maximum values) t = 125 c j (typical values) t = 125 c j v (v) fm 0 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 35 40 dpak 2 r (c/w) th(j-a) s (cm ) cu 2 epoxy printed board copper thickness = 35 m 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 80 85 90 95 100 105 110 115 120 i (a) arm i (v ) 150 c, 1s arm arm v (v) arm
stps20m60s package information doc id 019045 rev 1 5/9 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. dia. 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
package information stps20m60s 6/9 doc id 019045 rev 1 figure 13. d 2 pak footprint (dimensions in mm) table 6. 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
stps20m60s package information doc id 019045 rev 1 7/9 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
ordering information stps20m60s 8/9 doc id 019045 rev 1 3 ordering information 4 revision history table 8. ordering information order code marking package weight base qty delivery mode stps20m60st stps20m60st to-220ab 2.2 g 50 tube stps20m60sr stps20m60sr i 2 pak 1.49 g 50 tube STPS20M60SG-TR stps20m60sg d 2 pak 1.48 g 1000 tape and reel table 9. revision history date revision changes 11-oct-2011 1 initial release
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