STPS3SM6 Power Schottky rectifier Features High current capability Avalanche rated Low forward voltage drop High frequency operation Description The STPS3SM6D is a single diode Schottky rectifier, suited for high frequency switch mode power supply. Packaged in TO-22AC,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. A K K K TO-22AC STPS3SM6D A Table 1. Device summary Symbol alue F(A) 3 A RRM 6 F (typ).41 T (max) 15 C Figure 1. Electrical characteristics (a) "Forward" 2 x O X F RRM O X AR R R To F(o) F F(2xo) "Reverse" AR a. ARM and ARM must respect the reverse safe operating area defined in Figure 11. AR and AR are pulse measurements (t p < 1 µs). R, R, RRM and F, are static characteristics October 211 Doc D 2253 Rev 1 1/7 www.st.com 7
Characteristics STPS3SM6 1 Characteristics Table 2. Absolute ratings (limiting values, at T amb = 25 C unless otherwise specified) Symbol Parameter alue Unit RRM Repetitive peak reverse voltage 6 F(RMS) Forward rms current 6 A F(A) Average forward current, δ =.5 T c = 125 C 3 A FSM Surge non repetitive forward current t p = 1 ms sine-wave 4 A P (1) ARM Repetitive peak avalanche power T = 25 C, t p = 1 µs 28 W ARM (2) Maximum repetitive peak avalanche voltage 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 avalanche are provided in the application notes AN1768 and AN225. 2. See Figure 11 3. dptot 1 < condition to avoid thermal runaway for a diode on its own heatsink dt Rth(-a) Table 3. Thermal parameters Symbol Parameter alue Unit To evaluate the conduction losses use the following equation: P =.435 x F(A) +.55 x F 2 (RMS) t p < 1 µs, T < 15 C, AR < 15 A 8 (2) Maximum repetitive peak ASM avalanche voltage t p < 1 µs, T < 15 C, AR < 15 A 8 T stg Storage temperature range -65 to +175 C T Maximum operating unction temperature (3) 15 C R th(-c) Junction to case 1. C/W Table 4. Static electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit R (1) F (2) Reverse leakage current Forward voltage drop 1. Pulse test: t p = 5 ms, δ < 2 % 2. Pulse test: t p = 38 µs, δ < 2 % T = 25 C - 3 135 µa R = RRM T = 125 C - 2 8 ma T = 25 C -.5.54 F = 15 A T = 125 C -.41.47 T = 25 C -.57.64 F = 3 A T = 125 C -.515.6 2/7 Doc D 2253 Rev 1
STPS3SM6 Characteristics Figure 2. Average forward power dissipation versus average forward current Figure 3. Average forward current versus ambient temperature (δ =.5) 28 24 P F(A) (W) δ =.5 δ =.1 δ =.2 δ =.5 δ = 1 35 3 F(A) (A) R th(-a) = R th(-c) 2 25 16 2 12 15 8 4 δ = t p / T t p F(A) (A) 4 8 12 16 2 24 28 32 36 4 T 1 5 T amb( C) 25 5 75 1 125 15 Figure 4. Normalized avalanche power derating versus pulse duration Figure 5. Normalized avalanche power derating versus unction temperature 1 P P ARM ARM (tp) (1µs) P ARM(T) P ARM(25 C) 1.2 1.1.8.6.1.4.1.1.1 1.2 t (µs) T ( C) p 1 1 1 25 5 75 1 125 15 Figure 6. 35 3 25 2 15 1 (A) M M Non repetitive surge peak forward current versus overload duration (maximum values) T = 25 C c T = 75 C c T = 125 C c 5 t δ =.5 t(s) 1.E-3 1.E-2 1.E-1 1.E+ Figure 7. 1..9.8.7.6.5.4.3.2 Z th(-c) /Rth(-c) Single pulse Relative thermal impedance unction to case versus pulse duration.1. t p(s) 1.E-4 1.E-3 1.E-2 1.E-1 1.E+ Doc D 2253 Rev 1 3/7
Characteristics STPS3SM6 Figure 8. 1.E+2 1.E+1 (ma) R Reverse leakage current versus reverse voltage applied (typical values) T = 15 C T = 125 C Figure 9. C(pF) 1 Junction capacitance versus reverse voltage applied (typical values) F = 1 MHz osc = 3 m T = 25 C RMS 1.E+ 1.E-1 1.E-2 T = 1 C T = 75 C T = 5 C T = 25 C 1 R() 1.E-3 1 2 3 4 5 6 R() 1 1 1 1 Figure 1. FM(A) 1. 1. 1. T = 125 C (Typical values) Forward voltage drop versus forward current T = 125 C (Maximum values) T = 25 C (Maximum values) Figure 11. 11. 1. 9. 8. 7. Reverse safe operating area (t p < 1 µs and T < 15 C) arm (A) arm ( arm) 15 C, 1µs 6. 1. 5. FM() 4..1..2.4.6.8 1. 1.2 1.4 8 85 9 95 1 15 11 115 12 arm () 4/7 Doc D 2253 Rev 1
STPS3SM6 Package information 2 Package information Epoxy meets UL94, Cooling method: by conduction (C) Recommended torque value:.4 to.6 N m n 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-22AC dimensions Ref. Millimeters Dimensions nches H2 Ø C A Min. Max. Min. Max. A 4.4 4.6.173.181 C 1.23 1.32.48.51 D 2.4 2.72.94.17 L2 L5 L6 L7 E.49.7.19.27 F.61.88.24.34 F1 1.14 1.7.44.66 G 4.95 5.15.194.22 F1 F L9 L4 D M E H2 1. 1.4.393.49 L2 16.4 typ..645 typ. L4 13. 14..511.551 L5 2.65 2.95.14.116 L6 15.25 15.75.6.62 G L7 6.2 6.6.244.259 L9 3.5 3.93.137.154 M 2.6 typ..12 typ. Diam. 3.75 3.85.147.151 Doc D 2253 Rev 1 5/7
Ordering information STPS3SM6 3 Ordering information Table 6. Ordering information Order code Marking Package Weight Base qty Delivery mode STPS3SM6D STPS3SM6D TO-22AC 1.86 g 5 Tube 4 Revision history Table 7. Revision history Date Revision Changes 14-Oct-211 1 nitial release. 6/7 Doc D 2253 Rev 1
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