STPS40L15C Low drop OR-ing power Schottky diode Features Very low forward voltage drop for less power dissipation and reduced heatsink size A1 ■ Reverse voltage suited to OR-ing of 3 V, 5 V and 12 V rails A2 ■ Avalanche capability specified ■ K K Description Dual center tap schottky rectifier packaged in TO-220AB and TO-247, this device is especially intended for use as OR-ing diode in fault tolerant power supply equipments. A1 A2 A2 K A1 TO-220AB STPS40L15CT Table 1. July 2011 K Doc ID 4926 Rev 6 TO-247 STPS40L15CW Device summary Symbol Value IF(AV) 2x20 A VRRM 15 V Tj (max) 125 °C VF (max) 0.33 V 1/8 www.st.com 8 Characteristics 1 STPS40L15C Characteristics Table 2. Absolute ratings (limiting values, per diode) Symbol Parameter Unit VRRM Repetitive peak reverse voltage 15 V IF(RMS) Forward current rms 30 A Total 40 Per diode 20 Average forward current IFSM Surge non repetitive forward current tp = 10 m, Sinusoidal IRRM Peak repetitive reverse current tp = 2 µs, F= 1 kHz IRSM Non repetitive peak reverse current tp = 100 µs PARM Repetitive peak avalanche power < 1 -------------------------Rth ( j – a ) 2 A 3 A 13140 W -65 to + 150 °C 125 °C 10000 V/µs tp = 1µs, Tj = 25 °C condition to avoid thermal runaway for a diode on its own heatsink Thermal resistances Symbol Parameter Rth(j-c) Junction to case Rth (c) Coupling Table 4. Symbol VF(1) A Critical rate of rise of reverse voltage Table 3. IR(1) 310 Maximum operating junction temperature (1) dV/dt dPtot --------------dTj A Storage temperature range Tj 1. Tcase = 140 °C δ=1 IF(AV) Tstg Value Per diode 1.6 Total 0.85 Unit °C/W °C/W 0.1 Static electrical characteristics (Per diode) Parameter Tests conditions Tj = 25 °C Reverse leakage current Tj = 100 °C Forward voltage drop Min. Typ. Max. Unit 6 VR = VRRM mA 200 500 Tj = 25 °C IF = 19 A 0.41 Tj = 25 °C IF = 40 A 0.52 Tj = 125 °C IF = 19 A 0.28 0.33 Tj = 125 °C IF = 40 A 0.42 0.50 1. Pulse test : tp = 380 µs, δ < 2% To evaluate the conduction losses use the following equation : P = 0.18 x IF(AV) + 0.008 IF2(RMS) 2/8 Value Doc ID 4926 Rev 6 V STPS40L15C Figure 1. 8 Characteristics Average forward power dissipation Figure 2. versus average forward current (per diode) IF(av)(A) PF(av)(W) δ = 0.1 7 δ = 0.05 δ = 0.5 δ = 0.2 6 δ=1 5 4 3 T 2 1 0 δ=tp/T IF(av) (A) 0 2 4 6 Figure 3. 1 Average forward current versus ambient temperature ( δ = 1, per diode) 8 10 12 14 16 18 tp 20 22 Normalized avalanche power derating versus pulse duration 22 20 18 16 14 12 10 8 6 4 2 0 Rth(j-a)=Rth(j-c) Rth(j-a)=15°C/W T δ=tp/T 0 25 Figure 4. PARM(tp) PARM(1µs) 1.2 tp Tamb(°C) 50 75 100 125 150 Normalized avalanche power derating versus junction temperature PARM(Tj) PARM(25 °C) 1 0.8 0.1 0.6 0.4 0.01 0.2 tp(µs) 0.001 0.01 0.1 Figure 5. 1 10 100 1000 Non repetitive surge peak forward current versus overload duration (maximum values per diode) Tj(°C) 0 25 50 Figure 6. 75 100 150 125 Relative variation of thermal impedance junction to case versus pulse duration (per diode) Zth(j-c)/Rth(j-c) IM(A) 250 1.0 200 0.8 150 0.6 δ = 0.5 Tc=50°C 100 Tc=75°C 0.4 δ = 0.2 T IM 50 Tc=110°C t δ=0.5 0 1E-3 0.2 δ = 0.1 tp (s) t(s) Single pulse 1E-2 1E-1 1E+0 0.0 1.0E-4 Doc ID 4926 Rev 6 1.0E-3 1.0E-2 δ=tp/T 1.0E-1 tp 1.0E+0 3/8 Characteristics Figure 7. 5E+2 STPS40L15C Reverse leakage current versus reverse voltage applied (typical values per diode) Figure 8. IR(mA) C(nF) 5.0 F=1MHz Tj=25°C Tj=100°C 1E+2 1.0 1E+1 Tj=25°C 1E+0 1E-1 Junction capacitance versus reverse voltage applied (typical values per diode) VR(V) VR(V) 0 2 Figure 9. 4 6 8 10 12 14 16 Forward voltage drop versus forward current (typical values per diode) 0.1 1 5 10 20 Figure 10. Forward voltage drop versus forward current (typical maximum per diode) IFM(A) 200 200.0 100.0 2 IFM(A) Tj=100°C 100 Tj=150°C Tj=25°C 10.0 Tj=125°C 10 Tj=75°C 1.0 VFM(V) 0.1 0.0 4/8 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 VFM(V) 0 Doc ID 4926 Rev 6 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 STPS40L15C 2 Package information Package information ● Epoxy meets UL94,V0 ● Cooling method: by conduction (C) ● Recommended torque values for: TO-220AB 0.4 to 0.6 N·m ● Recommended torque values for: TO-247 0.9 to 1.2 N·m 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. Table 5. TO-220AB dimensions Dimensions Ref. A H2 Dia C L5 L7 Millimeters Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.106 D 2.40 2.72 0.094 0.009 E 0.49 0.70 0.019 0.037 F 0.61 0.88 0.024 0.067 F1 1.14 1.70 0.044 0.024 F2 1.14 1.70 0.044 0.054 G 4.95 5.15 0.194 0.368 G1 2.40 2.70 0.094 0.409 H2 10 10.40 0.393 0.208 L6 L2 F2 F1 D L9 L4 F L2 M G1 E G 0.645 typ L4 13 14 0.511 0.055 L5 2.65 2.95 0.104 0.069 L6 15.25 15.75 0.600 0.126 L7 6.20 6.60 0.244 L9 3.50 3.93 0.137 M Diam. Doc ID 4926 Rev 6 16.4 typ 2.6 typ. 3.75 3.85 0.102 typ. 0.147 0.151 5/8 Package information STPS40L15C Table 6. TO-247 dimensions Dimensions Ref. Millimeters Min. Typ. Inches Max. Min. Typ. Max. A 4.85 5.15 0.191 0.203 D 2.20 2.60 0.086 0.031 E 0.40 0.80 0.015 0.009 F 1.00 1.40 0.039 V Dia. V A H L5 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 L 0.055 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 0.169 L2 L4 F2 F1 L1 F3 V2 F4 D L3 L2 L3 F(x3) M G = = E 18.50 14.20 0.728 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 V 5° 5° V2 60° 60° Dia 6/8 0.145 Doc ID 4926 Rev 6 3.55 3.65 0.139 0.143 STPS40L15C 3 Ordering information Ordering information Table 7. Ordering information Order code Marking STPS40L15CW STPS40L15CW STPS40L15CT 4 STPS40L15CT Package Weight Base qty Delivery mode TO-247 4.4 g 30 Tube TO-220AB 2.2 g 50 Tube Revision history Table 8. Document revision history Date Revision July-2003 5A 18-Jul-2011 6 Changes Previous edition. Added cathode indicator K to illustration for TO-220AB. Doc ID 4926 Rev 6 7/8 STPS40L15C Please Read Carefully: Information in this document is provided solely in connection with ST products. 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