november 2011 doc id 022037 rev 1 1/7 7 stps20m60 power schottky rectifier features high current capability avalanche rated low forward voltage drop high frequency operation description the STPS20M60D is a single diode schottky rectifier, suited for high frequency switch mode power supply. packaged in to-220ac,this device is intended to be used in notebook, game station and desktop adapters, providing in these applications 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) 0.37 v t j (max) 150 c a. v arm and i arm must respect the reverse safe operating area defined in figure 11 . v ar and i ar are pulse measurements (t p < 1 s). v r , i r , v rrm and v f , are static characteristics k a k k a to-220ac STPS20M60D 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 stps20m60 2/7 doc id 022037 rev 1 1 characteristics table 2. absolute ratings (limiting values, 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 60 a i f(av) average forward current, = 0.5 t c = 135 c 20 a i fsm surge non repetitive forward current t p = 10 ms sine-wave 400 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 11 maximum repetitive peak avalanche voltage t p < 1 s, t j < 150 c, i ar < 99 a 80 v v asm (2) maximum repetitive 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 parameters symbol parameter value unit r th(j-c) junction to case 1.0 c/w dptot dtj < 1 rth(j-a)
stps20m60 characteristics doc id 022037 rev 1 3/7 to evaluate the conduction losses use the following equation: p = 0.385 x i f(av) + 0.0073 x i f 2 (rms) table 4. static electrical characteristics symbol parameter test conditions min. typ. max. unit i r (1) reverse leakage current t j = 25 c v r = v rrm - 30 125 a t j = 125 c - 20 75 ma v f (2) forward voltage drop t j = 25 c i f = 10 a - 0.470 0.505 v t j = 125 c - 0.370 0.415 t j = 25 c i f = 20 a - 0.530 0.580 t j = 125 c - 0.460 0.530 1. pulse test: t p = 5 ms, < 2% 2. pulse test: t p = 380 s, < 2% figure 2. average forward power dissipation versus average forward current figure 3. average forward current versus ambient temperature ( = 0.5) p (w) f(av) 0 2 4 6 8 10 12 14 16 18 0 4 8 1216202428 = 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
characteristics stps20m60 4/7 doc id 022037 rev 1 figure 6. non repetitive surge peak forward current versus overload duration (maximum values) figure 7. relative thermal impedance junction to case versus pulse duration 0 50 100 150 200 250 300 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 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. reverse safe operating area (t p < 1 s and t j < 150 c) 0.1 1.0 10.0 100.0 1000.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 i (a) fm (maximum values) t = 25 c j (maximum values) t = 125 c j (typical values) t = 125 c j v (v) fm 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0 80 85 90 95 100 105 110 115 120 i (a) arm i (v ) 150 c, 1s arm arm v (v) arm
stps20m60 package information doc id 022037 rev 1 5/7 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-220ac 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 g 4.95 5.15 0.194 0.202 h2 10.00 10.40 0.393 0.409 l2 16.40 typ. 0.645 typ. l4 13.00 14.00 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. i 3.75 3.85 0.147 0.151 a c d l7 ? i l5 l6 l9 l4 f h2 g l2 f1 e m
ordering information stps20m60 6/7 doc id 022037 rev 1 3 ordering information 4 revision history table 6. ordering information order code marking package weight base qty delivery mode STPS20M60D STPS20M60D to-220ac 1.86 g 50 tube table 7. revision history date revision changes 02-nov-2011 1 first issue.
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