november 2011 doc id 17966 rev 1 1/7 7 stps0540-y automotive schottky rectifier features very small conduction losses negligible switching losses extremely fast switching ecopack ? 2 compliant component aec-q101 qualified description single schottky rectifier suited for switch mode power supplies and high frequency dc to dc converters. packages in sod-123, these devices is intended for use in low voltage, high frequency inverters, free wheeling and polarity protection for automotive applications. table 1. device summary symbol value i f(av) 0.5 a v rrm 40 v v f (max) 0.40 v sod-123 STPS0540ZY www.st.com
characteristics stps0540-y 2/7 doc id 17966 rev 1 1 characteristics table 2. absolute ratings (limiting values) symbol parameter value unit v rrm repetitive peak reverse voltage 40 v i f(rms) forward rms voltage 2 a i f(av) average forward current = 0.5 ta = 60 c 0.5 a i fsm surge non repetitive forward current t p = 10 ms sinusoidal 5.5 a dv/dt critical rate of rise of reverse voltage 10000 v/s t stg storage temperature range -65 to + 150 c t j operating junction temperature (1) 1. condition to avoid thermal runaway for a diode on its own heatsink -40 to + 150 c table 3. thermal resistance symbol parameter value unit r th(j-a) junction to ambient (1) 1. mounted on epoxy board. 500 c/w table 4. static electrical characteristics symbol parameter test co nditions 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 40 a t j = 100 c 1.5 5 ma v f (2) 2. pulse test: t p = 380 s, < 2% to evaluate the conduction losses use the following equation: p = 0.29 x i f(av) + 0.22 x i f 2 (rms) forward voltage drop t j = 25 c i f = 0.5 a 0.50 v t j = 100 c 0.35 0.40 t j = 25 c i f = 1 a 0.55 t j = 100 c 0.45 0.51 dptot dtj < 1 rth(j-a)
stps0540-y characteristics doc id 17966 rev 1 3/7 figure 1. average forward power dissipation versus average forward current figure 2. average forward current versus ambient temperature ( = 0.5) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.00 0.05 0.10 0.15 0.20 0.25 0.30 if(av) (a) pf(av)(w) = 0.05 = 0.1 = 0.2 = 0.5 = 1 t =tp/t tp 0 25 50 75 100 125 0.0 0.1 0.2 0.3 0.4 0.5 0.6 tamb(c) if(av)(a) t =tp/t tp figure 3. non repetitive surge peak forward current versus overload duration (maximum values) figure 4. relative variation of thermal impedance junction to ambient versus pulse duration 1e-3 1e-2 1e-1 1e+0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t(s) im(a) i m t =0.5 ta = 25c 1e-3 1e-2 1e-1 1e+0 1e+1 1e+ 2 1e-3 1e-2 1e-1 1e+0 tp(s) zth(j-a) / rth(j-a) t =tp/t tp = 0.5 = 0.2 = 0.1 single pulse epoxy printed circuit board fr4 with recommended pad layout figure 5. reverse leakage current versus reverse voltage applied (typical values) figure 6. reverse leakage current versus junction temperature (typical values) 0 5 10 15 20 25 30 35 40 1e-4 1e-3 1e-2 1e-1 1e+0 1e+1 5e+1 vr(v) ir(ma) tj=70c tj=25c tj=100c tj=125c 0 25 50 75 100 125 1e-1 1e+0 1e+1 1e+2 1e+3 tj(c) ir[tj] / ir[tj=25c] vr=vrrm
characteristics stps0540-y 4/7 doc id 17966 rev 1 figure 7. junction capacitance versus reverse voltage applied (typical values) figure 8. forward voltage drop versus forward current (maximum values) 12 510204060 10 20 50 100 200 vr(v) c(pf) f=1mhz tj=25c stps0540z stps0560z 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1e-3 1e-2 1e-1 1e+0 5e+0 vfm(v) ifm(a) tj=25c tj=100c tj=100c typical values
stps0540-y package information doc id 17966 rev 1 5/7 2 package information epoxy meets ul94, v0 band indicates cathode 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 9. footprint dimensions in mm (inches) table 5. sod-123 dimensions ref. dimensions millimeters inches min. max. min. max. a 1.45 0.057 a1 0 0.1 0 0.004 a2 0.85 1.35 0.033 0.053 b 0.55 typ. 0.022 typ. c 0.15 typ. 0.039 typ. d 2.55 2.85 0.1 0.112 e 1.4 1.7 0.055 0.067 g0.25 0.01 h 3.55 3.75 0.14 0.148 h b d e a1 a2 a g c 4.00 (0.157) 0.57 (0.022) 2.70 (0.106) 0.65 (0.026) 0.65 (0.026)
ordering information stps0540-y 6/7 doc id 17966 rev 1 3 ordering information 3.1 revision history table 6. ordering information order code marking package weight base qty delivery mode STPS0540ZY z5y sod-123 0.01 g 3000 tape and reel table 7. revision history date revision changes 03-nov-2011 1 initial release.
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