STPS4045CP/cw june 1999 - ed: 3b power schottky rectifiers ? dual center tap schottky rectifier suited for switchmode power supply and high frequency dc to dc converters. packaged either in sot-93 or to-247 this device is intended for use in low voltage, high frequency inverters, free wheeling and polarity protection applications. description sot-93 STPS4045CP very small conduction losses negligible switching losses extremely fast switching low thermal resistance features and benefits symbol parameter value unit v rrm repetitive peak reverse voltage 45 v i f(rms) rms forward current 30 a i f(av) average forward current tc = 150 c d = 0.5 per diode per device 20 40 a i fsm surge non repetitive forward current tp = 10 ms sinusoidal 220 a i rrm repetitive peak reverse current tp = 2 m s square f = 1khz 1a i rsm non repetitive peak reverse current tp = 100 m s square 3a tstg storage temperature range - 65 to + 175 c tj maximum operating junction temperature * 175 c dv/dt critical rate of rise of reverse voltage 10000 v/ m s absolute ratings (limiting values, per diode) a1 k a2 k a1 a2 i f(av) 2 x 20 a v rrm 45 v tj (max) 175 c v f (max) 0.63 v main products characteristics to-247 stps4045cw a1 k a2 * : dptot dtj < 1 rth ( j - a ) thermal runaway condition for a diode on its own heatsink 1/5
symbol parameter value unit r th (j-c) junction to case per diode total 1.5 0.8 c/w r th (c) coupling 0.1 thermal resistances when the diodes 1 and 2 are used simultaneously : d t j (diode 1) = p(diode1) x r th(j-c) (per diode) + p(diode 2) x r th(c) symbol parameter tests conditions min. typ. max. unit i r * reverse leakage current tj = 25 cv r = v rrm 200 m a tj = 125 c 11 40 ma v f * forward voltage drop tj = 125 ci f = 20 a 0.56 0.63 v tj = 25 ci f = 40 a 0.94 tj = 125 ci f = 40 a 0.7 0.83 static electrical characteristics (per diode) pulse test : * tp = 380 m s, d < 2% to evaluate the conduction losses use the following equation : p = 0.46 x i f(av) + 0.0085 i f 2 (rms) 0 2 4 6 8 101214161820222426 0 2 4 6 8 10 12 14 16 18 if(av) (a) pf(av)(w) t d =tp/t tp d = 1 d = 0.5 d = 0.2 d = 0.1 d = 0.05 fig. 1: average forward power dissipation versus average forward current (per diode). 0 25 50 75 100 125 150 175 0 2 4 6 8 10 12 14 16 18 20 22 tamb(c) if(av)(a) rth(j-a)=15c/w rth(j-a)=rth(j-c) t d =tp/t tp fig. 2: average current versus ambient temperature (per diode). STPS4045CP/cw 2/5
1e-3 1e-2 1e-1 1e+0 0 20 40 60 80 100 120 140 160 180 200 t(s) im(a) tc=75c tc=100c tc=125c i m t d =0.5 fig. 3: non repetitive surge peak forward current versus overload duration (maximum values) (per diode). 1e-4 1e-3 1e-2 1e-1 1e+0 0.0 0.2 0.4 0.6 0.8 1.0 tp(s) zth(j-c)/rth(j-c) t d =tp/t tp single pulse d = 0.1 d = 0.2 d = 0.5 fig. 4: relative variation of thermal transient impedance junction to case versus pulse duration. 0 5 10 15 20 25 30 35 40 45 1e+0 1e+1 1e+2 1e+3 1e+4 5e+4 vr(v) ir(a) tj=150c tj=100c tj=125c tj=75c tj=50c tj=25c fig. 5: reverse leakage current versus reverse voltage applied (typical values) (per diode). 12 51020 50 0.1 1.0 5.0 vr(v) c(nf) fig. 6: junction capacitance versus reverse voltage applied (typical values) (per diode). 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 1 10 100 200 vfm(v) ifm(a) typical values tj=125c tj=125c tj=25c fig. 7: forward voltage drop versus forward current (maximum values) (per diode). STPS4045CP/cw 3/5
package mechanical data sot-93 ref. dimensions millimeters inches min. typ. max. min. typ. max. a 4.70 4.90 1.185 0.193 c 1.90 2.10 0.075 0.083 d 2.50 0.098 d1 2.00 0.078 e 0.50 0.78 0.020 0.031 f 1.10 1.30 0.043 0.051 f3 1.75 0.069 f4 2.10 0.083 g 10.80 11.10 0.425 0.437 h 14.70 15.20 0.279 0.598 l 12.20 0.480 l2 16.20 0.638 l3 18.0 0.709 l5 3.95 4.15 0.156 0.163 l6 31.00 1.220 o 4.00 4.10 0.157 0.161 STPS4045CP/cw 4/5
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without expres s written ap- proval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 1999 stmicroelectronics - printed in italy - all rights reserved. stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com package mechanical data to-247 f2 f1 v2 l4 l2 l1 l3 d l l5 me h v v a dia. f3 f4 g = = f(x3) ref. dimensions millimeters inches min. typ. max. min. typ. max. a 4.85 5.15 0.191 0.203 d 2.20 2.60 0.086 0.102 e 0.40 0.80 0.015 0.031 f 1.00 1.40 0.039 0.055 f1 3.00 0.118 f2 2.00 0.078 f3 2.00 2.40 0.078 0.094 f4 3.00 3.40 0.118 0.133 g 10.90 0.429 h 15.45 15.75 0.608 0.620 l 19.85 20.15 0.781 0.793 l1 3.70 4.30 0.145 0.169 l2 18.50 0.728 l3 14.20 14.80 0.559 0.582 l4 34.60 1.362 l5 5.50 0.216 m 2.00 3.00 0.078 0.118 v5 5 v2 60 60 dia. 3.55 3.65 0.139 0.143 type marking package weight base qty delivery mode STPS4045CP STPS4045CP sot-93 3.97 g. 30 tube stps4045cw stps4045cw to-247 4.46 g. 30 tube cooling method: by conduction (c) recommended torque value: 0.8 n.m maximum torque value: 1.0 n.m. epoxy meets ul94,v0 STPS4045CP/cw 5/5
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