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this is information on a product in full production. november 2014 docid022921 rev 2 1/14 STPS20SM120S power schottky rectifier datasheet - production data features ? high current capability ? avalanche rated ? low forward voltage drop ? high frequency operation ? insulated package to220fp-ab: ? insulated voltage: 2000 v rms sine ? ecopack ? 2 compliant component on to-220ab and to-220f pab. description this schottky diode is suited for high frequency switch mode power supply. packaged in to-220ab narrow leads, to-220ab, to-220fpab and i 2 pak, 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) . $ $ $ $ $ $ . . 72)3$% 72$% ,e3$. . $ $ 72$% qduurzohdgv . $ $ . . . table 1. device summary symbol value i f(av) 20 a v rrm 120 v t j 150 c v f (typ) 0.49 v a. v arm and i arm must respect the reverse safe operating area defined in figure 9 . v ar and i ar are pulse measurements (t p < 10 s). v r , i r , v rrm and v f , are static characteristics 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 STPS20SM120S 2/14 docid022921 rev 2 1 characteristics to evaluate the conduction losses use the following equation: p = 0.56 x i f(av) + 0.008 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 120 v i f(rms) forward rms current 50 a i f(av) average forward current 20 a i fsm surge non repetitive forward current t p = 10 ms sine-wave 220 a p arm (1) repetitive peak avalanche power t j = 125 c, t p = 10 s 900 w v arm (2) maximum repetitive peak avalanche voltage t p < 10 s, t j < 125 c, i ar < 6a 150 v v asm (2) maximum single-pulse peak avalanche voltage t p < 10 s, t j < 125 c, i ar < 6a 150 v t stg storage temperature range -65 to +175 c t j maximum operating junction temperature (3) 150 c 1. for pulse time duration deratings, please refer to figure 4 . more details regarding the avalanche energy measurements and diode validation in the avalanche are provided in the stmicroelectronics application notes an1768, ?admissible avalanche power of schottky diodes? and an2025, ?converter improvement using schottky rectifier avalanche specification?. 2. see figure 9 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 and to-220ab narrow leads 1.55 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 - 40 210 a t j = 125 c - 15 40 ma v f (2) forward voltage drop t j = 125 c i f = 5 a - 0.49 0.54 v t j = 25 c i f = 10 a -0.75 t j = 125 c - 0.57 0.62 t j = 25 c i f = 20 a - 0.89 t j = 125 c - 0.65 0.72 1. pulse test: t p = 5 ms, < 2% 2. pulse test: t p = 380 s, < 2%
docid022921 rev 2 3/14 STPS20SM120S characteristics 14 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 4 8 12 16 20 24 0 4 8 1216202428 t = t / t p t p i(a) f(av) = 1 = 0.5 = 0.2 = 0.1 = 0.05 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 t = t / t p t p figure 4. normalized avalanche power derating versus pulse duration figure 5. relative variation of thermal impedance junction to case versus pulse duration w 3 ?v 3 $50 w 3 3 $50 ?v 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 6. reverse leakage current versus reverse voltage applied (typical values) figure 7. junction capacitance versus reverse voltage applied (typical values) i (ma) r 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 0 102030405060708090100110120 t j c =150 t j =25c t j =100c t j =75c t j =50c t j =150c v(v) r 100 1000 1 10 100 1000 f=1mhz v osc =30mv rms t j =25c c(pf) v(v) r
characteristics STPS20SM120S 4/14 docid022921 rev 2 figure 8. forward voltage drop versus forward current figure 9. reverse safe operating area (t p < 10 s and t j < 125 c) i(a) fm 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 1.6 1.8 t j =125c (maximum values) t j =125c (typical values) t j =25c (maximum values) v(v) fm i (a) arm 5.0 5.5 6.0 6.5 7.0 7.5 8.0 120 130 140 150 160 170 v (v) arm v (v) arm
docid022921 rev 2 5/14 STPS20SM120S package information 14 2 package information ? epoxy meets ul94, v0 ? cooling method: by conduction (c) ? recommended torque value for to-220ab and to-220fpab: 0.4 nm 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. figure 10. to-220ab narrow leads dimension definitions ( ?3 4 / / / e[ e[ h / h ) ' ' + $ - &
package information STPS20SM120S 6/14 docid022921 rev 2 table 5. to-220ab narrow leads dimension values ref. dimensions millimeters inches min. typ. max. min. typ. max. a 4.40 4.60 0.17 0.18 b 0.61 0.88 0.024 0.034 b1 0.95 1.20 0.037 0.047 c 0.48 0.70 0.019 0.027 d 15.25 15.75 0.60 0.62 d1 1.27 0.05 e 10.00 10.40 0.39 0.41 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.19 0.20 f 1.23 1.32 0.048 0.052 h1 6.20 6.60 0.24 0.26 j1 2.40 2.72 0.095 0.107 l 13.00 14.00 0.51 0.55 l1 2.60 2.90 0.102 0.114 l20 15.40 0.61 l30 28.90 1.14 ? p 3.75 3.85 0.147 0.151 q 2.65 2.95 0.104 0.116
docid022921 rev 2 7/14 STPS20SM120S package information 14 figure 11. to-220ab dimension definitions $ ) ' - + ? 3 4 ' / / e ( h h / / e f 5hvlqjdwh pppd[ surwuxvlrq 5hvlqjdwh pppd[ surwuxvlrq 5hvlqjdwhsrvlwlrqdffhswhglqhdfkriwkhwzr srvlwlrqvkrzqdvzhoodvwkhv\pphwulfdorssrvlwhv
package information STPS20SM120S 8/14 docid022921 rev 2 table 6. to-220ab dimension values ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.17 0.181 b 0.61 0.88 0.024 0.035 b1 1.14 1.50 0.045 0.059 c 0.48 0.70 0.019 0.027 d 15.25 15.75 0.60 0.62 d1 1.27 typ. 0.05 typ. e 10 10.40 0.39 0.41 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.19 0.20 f 1.23 1.32 0.048 0.052 h1 6.20 6.60 0.24 0.26 j1 2.40 2.72 0.094 0.107 l 13 14 0.51 0.55 l1 3.50 3.93 0.137 0.154 l20 16.40 typ. 0.64 typ. l30 28.90 typ. 1.13 typ. ? p 3.75 3.85 0.147 0.151 q 2.65 2.95 0.104 0.116
docid022921 rev 2 9/14 STPS20SM120S package information 14 figure 12. to-220fpab dimension definitions + $ % 'ld / / / ) ) ) ' ( / * * / /
package information STPS20SM120S 10/14 docid022921 rev 2 table 7. to-220fpab dimension values 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
docid022921 rev 2 11/14 STPS20SM120S package information 14 figure 13. i2pak dimension definitions ( / / e ' $ f f $ e h h /
package information STPS20SM120S 12/14 docid022921 rev 2 table 8. i2pak dimension values 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
docid022921 rev 2 13/14 STPS20SM120S ordering information 14 3 ordering information 4 revision history table 9. ordering information order code marking package weight base qty delivery mode STPS20SM120Sr ps20sm120sr i 2 pak 1.49 g 50 tube STPS20SM120Stn ps20sm120stn to-220ab narrow leads 1.9 g 50 tube STPS20SM120St ps20sm120st to-220ab 2.2 g 50 tube STPS20SM120Sfp ps20sm120sfp to-220fpab 1.7 g 50 tube table 10. document revision history date revision changes 02-apr-2012 1 first issue. 13-nov-2014 2 added to-220ab and to-220fpab package information.
STPS20SM120S 14/14 docid022921 rev 2 important notice ? please read carefully stmicroelectronics nv and its subsidiaries (?st?) reserve the right to make changes, corrections, enhancements, modifications, and improvements to st products and/or to this document at any time without notice. purchasers should obtain the latest relevant in formation on st products before placing orders. st products are sold pursuant to st?s terms and conditions of sale in place at the time of o rder acknowledgement. purchasers are solely responsible for the choice, selection, and use of st products and st assumes no liability for application assistance or the design of purchasers? products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different from the information set forth herein shall void any warranty granted by st for such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2014 stmicroelectronics ? all rights reserved

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