Power Schottky rectifier Main product characteristics K I F(V) V RRM V F 1 45 V.57 V Features and Benefits Very small conduction losses Negligible switching losses Extremely fast switching Low forward voltage drop Insulated package: TO-22FPC Insulating voltage = 2V DC Capacitance = 12 pf valanche capability specified Description Single chip Schottky rectifier suited for Switch Mode Power Supply and high frequency DC to DC converters. This device is intended for use in low voltage, high frequency inverters, free wheeling and polarity protection applications. K TO-22C STPS145D K TO-22FPC STPS145FP March 27 Rev 6 1/8 www.st.com 8
Characteristics STPS145 1 Characteristics Table 1. bsolute Ratings (limiting values) Symbol Parameter Value Unit V RRM Repetitive peak reverse voltage 45 V I F(RMS) RMS forward voltage 3 I F(V) verage forward current δ =.5 TO-22C TO-22FPC T c = 15 C T c = 145 C 1 I FSM Surge non repetitive forward current Repetitive peak reverse current t p = 1 ms sinusoidal t p = 2 µs F = 1 khz 18 1 t P RM Repetitive peak avalanche power p = 1 µs Tj = 25 4 W C T stg Storage temperature range -65 to + 175 C T j Maximum junction temperature 175 C dv/dt Critical rate of rise of reverse voltage 1 V/µs Table 2. Thermal resistances Symbol Parameter Value Unit R th(j-c) Junction to case TO-22C 2.2 TO-22FPC 4.5 C/W Table 3. Static electrical characteristics Symbol Parameter Test Conditions Min. Typ. Max. Unit I R (1) V F (2) Reverse leakage current Forward voltage drop T j = 25 C 1 µ V R = V RRM T j = 125 C 15 m T j = 25 C I F = 2.84 T j = 125 C I F = 2.72 T j = 125 C I F = 1.6 V 1. Pulse test: tp = 5 ms, δ < 2% 2. Pulse test: tp = 38 µs, δ < 2% To evaluate the conduction losses use the following equation: P =.42 x I F(V) +.15 I F 2 (RMS) 2/8
Characteristics Figure 1. verage forward power dissipation versus average forward current Figure 2. verage forward current versus ambient temperature (δ =.5) 8 7 P F(V) (W) δ =.5 δ =.1 δ =.2 δ =.5 12 1 I F(V) () R =Rth(j-c) th(j-a) TO-22C 6 5 δ = 1 8 R th(j-a) =15 C/W TO-22FPC 4 6 3 2 T 1 I F(V) () δ=tp/t tp 1 2 3 4 5 6 7 8 9 1 11 12 4 T 2 δ=tp/t tp T amb( C) 25 5 75 1 125 15 175 Figure 3. Normalized avalanche power derating versus pulse duration Figure 4. Normalized avalanche power derating versus junction temperature 1 P RM(t p) P RM(1µs) 1.2 P RM(t p) P RM(25 C) 1.1.8.6.1.4.1.1.1 1 t p(µs) 1 1 1.2 T ( C) j 25 5 75 1 125 15 Figure 5. Non repetitive surge peak forward current versus overload duration (maximum values) (TO-22C) Figure 6. Non repetitive surge peak forward current versus overload duration (maximum values) (TO-22FPC) 16 14 12 1 8 6 I () M T C=5 C T C=1 C 4 IM T C=15 C 2 t δ=.5 t(s) 1E-3 1E-2 1E-1 1E+ 1 9 8 7 6 5 4 3 2 I () M IM T C=5 C T C=1 C T C=15 C t 1 δ=.5 t(s) 1E-3 1E-2 1E-1 1E+ 3/8
Characteristics STPS145 Figure 7. Relative variation of thermal transient impedance junction to case versus pulse duration (TO-22C) Figure 8. Relative variation of thermal transient impedance junction to case versus pulse duration (TO-22FPC) 1. Z th(j-c) /Rth(j-c) 1. Z th(j-c) /Rth(j-c).8.8.6 δ =.5.6 δ =.5.4 δ =.2 T.2 δ =.1 t p(s) Single pulse δ=tp/t tp. 1E-4 1E-3 1E-2 1E-1 1E+.4.2 δ =.2 δ =.1 t p(s) Single pulse δ=tp/t tp. 1E-3 1E-2 1E-1 1E+ 1E+1 T Figure 9. Reverse leakage current versus reverse voltage applied (typical values) Figure 1. Reverse leakage current versus reverse voltage applied (typical values) 1E+5 1E+4 1E+3 I (µ) R T j=15 C T j=125 C T j=1 C 1 5 C(pF) F=1MHz V OSC=3mVRMS T j=25 C 1E+2 T j=75 C T j=5 C 1E+1 T j=25 C 2 1E+ V R(V) 1E-1 5 1 15 2 25 3 35 4 45 1 V (V) R 1 2 5 1 2 5 Figure 11. I FM() 1. Forward voltage drop versus forward current (maximum values) T j=125 C (typical values) 1. T j=25 C T j=125 C 1. V FM(V).1..2.4.6.8 1. 1.2 1.4 1.6 4/8
Package Information 2 Package Information Epoxy meets UL94, V Cooling method: by conduction (C) Recommended torque value:.55 Nm Maximum torque value:.7 Nm Figure 12. TO-22C dimensions Dimensions Ref Millimeters Inches Min. Max. Min. Max. H2 Ø I L5 C L7 4.4 4.6.173.181 C 1.23 1.32.48.51 D 2.4 2.72.94.17 E.49.7.19.27 L6 F.61.88.24.34 L2 F1 1.14 1.7.44.66 F1 L9 D G 4.95 5.15.194.22 H2 1. 1.4.393.49 L4 L2 16.4 typ..645 typ. F L4 13. 14..511.551 G M E L5 2.65 2.95.14.116 L6 15.25 15.75.6.62 L7 6.2 6.6.244.259 L9 3.5 3.93.137.154 M 2.6 typ..12 typ. Diam. I 3.75 3.85.147.151 5/8
Package Information STPS145 Figure 13. TO-22FPC dimensions Dimensions Ref Millimeters Inches Min. Max. Min. Max. H B 4.4 4.6.173.181 B 2.5 2.7.98.16 D 2.5 2.75.98.18 L3 L2 L6 Dia L7 E.45.7.18.27 F.75 1.3.39 F1 1.15 1.7.45.67 G 4.95 5.2.195.25 L5 G1 2.4 2.7.94.16 F1 D H 1 1.4.393.49 L4 L2 16 Typ..63 Typ. G1 F E L3 28.6 3.6 1.126 1.25 L4 9.8 1.6.386.417 G L5 2.9 3.6.114.142 L6 15.9 16.4.626.646 L7 9. 9.3.354.366 Dia. 3. 3.2.118.126 In order to meet environmental requirements, ST offers these devices in ECOPCK packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPCK is an ST trademark. ECOPCK specifications are available at: www.st.com. 6/8
Ordering Information 3 Ordering Information Ordering type Marking Package Weight Base qty Delivery mode STPS145D STPS145D TO-22C 1.86 g 5 Tube STPS145FP STPS145FP TO-22FPC 1.9 g 5 Tube 4 Revision history Date Revision Description of Changes Jul-23 5D Last release. 22-Mar-27 6 Removed ISOWTT package. 7/8
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