STPS40120C Power Schottky rectifier Features ■ A1 High junction temperature capability K A2 ■ Avalanche rated ■ Low leakage current ■ Good trade-off between leakage current and forward voltage drop K K Description A1 Dual center tap Schottky rectifier suited for high frequency Switch Mode Power Supply. Packaged in TO-220AB, TO-220AB narrow leads and I2PAK, this device is intended to be used in notebook and LCD adaptors, desktop SMPS, providing in these applications a margin between the remaining voltages applied on the diode and the voltage capability of the diode. K A2 A1 K A2 I2PAK STPS40120CR TO-220AB STPS40120CT K A2 A1 K TO-220AB narrow leads STPS40120CTN Table 1. September 2011 Doc ID 11214 Rev 3 Device summary IF(AV) 2 x 20 A VRRM 120 V Tj(max) 175 °C VF(typ) 0.57 V 1/9 www.st.com 9 Characteristics 1 STPS40120C Characteristics Table 2. Absolute ratings (limiting values, per diode) Symbol Parameter Unit VRRM Repetitive peak reverse voltage 120 V IF(RMS) Forward rms current 30 A Per diode Per device 20 40 A 200 A 10500 W -65 to + 175 °C 175 °C δ = 0.5 Tc = 145 °C IF(AV) Average forward current IFSM Surge non repetitive forward current tp = 10 ms sinusoidal PARM Repetitive peak avalanche power tp = 1 µs, Tj = 25 °C Tstg Storage temperature range Maximum operating junction temperature(1) Tj 1. Value dPtot --------------dTj < 1 -------------------------Rth ( j – a ) Table 3. condition to avoid runaway for a diode on its own heatsink Thermal parameters Symbol Parameter Value Unit Rth(j-c) Junction to case Per diode Total 1.6 0.85 °C/W Rth(c) Coupling Total 0.1 °C/W When the diodes 1 and 2 are used simultaneously: ΔTj(diode 1) = P(diode 1) x Rth(j-c)(per diode) + P(diode 2) x Rth(c) Table 4. Symbol IR(1) Static electrical characteristics (per diode) Test conditions Min. Reverse leakage current Tj = 25 °C Tj = 125 °C Tj = 25 °C Tj = 125 °C VF(2) Forward voltage drop Tj = 25 °C Tj = 125 °C Tj = 25 °C Tj = 125 °C VR = VRRM Typ. 4 Unit 25 μA 12 mA 0.73 IF = 7.5 A 0.57 0.61 0.9 IF = 20 A V 0.69 0.73 1 IF = 40 A 0.83 1. Pulse test: tp = 5 ms, δ < 2% 2. Pulse test: tp = 380 µs, δ < 2% To evaluate the maximum conduction losses use the following equation: P = 0.58 x IF(AV) + 0.0075 IF2(RMS) 2/9 Max. Doc ID 11214 Rev 3 0.88 STPS40120C Figure 1. Characteristics Average forward power dissipation versus average forward current (per diode) Figure 2. PF(AV)(W) Average forward current versus ambient temperature (δ = 0.5, per diode) IF(AV)(A) 20 22 Rth(j-a)=Rth(j-c) δ = 0.5 18 16 20 18 δ = 0.2 δ = 0.1 14 16 δ=1 14 12 δ = 0.05 12 10 Rth(j-a)=15°C/W 10 8 8 6 6 T 4 T 4 2 IF(AV)(A) 0 2 4 Figure 3. 6 8 10 12 2 δ=tp/T 0 14 16 18 20 δ=tp/T tp 0 22 0 24 Normalized avalanche power derating versus pulse duration Figure 4. PARM(tp) PARM(1 µs) Tamb(°C) tp 25 50 75 100 125 150 175 Normalized avalanche power derating versus junction temperature PARM(Tj) PARM(25 °C) 1 1.2 1 0.1 0.8 0.6 0.4 0.01 0.2 Tj(°C) tp(µs) 0.001 0.01 0.1 Figure 5. 1 0 10 100 25 1000 Non repetitive surge peak forward current versus overload duration (maximum values, per diode) Figure 6. 50 75 100 125 150 Relative variation of thermal impedance junction to ambient versus pulse duration Zth(j-c)/Rth(j-c) IM(A) 240 1.0 220 0.9 200 0.8 180 0.7 160 0.6 140 0.5 120 Tc=75°C 100 80 0.4 0.3 60 40 δ = 0.5 Tc=25°C Tc=125°C IM 20 δ = 0.2 T δ = 0.1 Single pulse t 0.1 t(s) δ=0.5 0 1.E-03 0.2 δ=tp/T tp(s) tp 0.0 1.E-02 1.E-01 1.E+00 1.E-03 Doc ID 11214 Rev 3 1.E-02 1.E-01 1.E+00 3/9 Characteristics Figure 7. STPS40120C Reverse leakage current versus reverse voltage applied (typical values, per diode) Figure 8. IR(mA) Junction capacitance versus reverse voltage applied (typical values, per diode) C(pF) 1.E+02 1000 1.E+01 F=1MHz VOSC=30mVRMS Tj=25°C Tj=150°C Tj=125°C 1.E+00 Tj=100°C 1.E-01 Tj=75°C 1.E-02 100 Tj=50°C 1.E-03 Tj=25°C 1.E-04 VR(V) VR(V) 10 1.E-05 0 Figure 9. 10 20 30 40 50 60 70 80 90 100 110 1 120 10 Forward voltage drop versus forward current (per diode) IFM(A) 100 Tj=125°C (maximum values) Tj=125°C (typical values) Tj=25°C (maximum values) 10 VFM(V) 1 0.0 4/9 0.2 0.4 0.6 0.8 Doc ID 11214 Rev 3 1.0 1.2 1.4 100 STPS40120C 2 Package information Package information ● Epoxy meets UL94, V0 ● Cooling method: by conduction (C) ● Recommended torque value: 0.4 to 0.6 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. Figure 10. TO-220AB dimensions Dimensions Ref. Dia Max. Min. Max. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.066 F2 1.14 1.70 0.044 0.066 G 4.95 5.15 0.194 0.202 G1 2.40 2.70 0.094 0.106 H2 10 10.40 0.393 0.409 C L5 L7 L6 L2 F2 F1 D L9 L4 F L2 M G1 Inches Min. A H2 Millimeters 16.4 typ. 0.645 typ. E G L4 13 14 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.20 6.60 0.244 0.259 L9 3.50 3.93 0.137 0.154 M Diam. Doc ID 11214 Rev 3 2.6 typ. 3.75 3.85 0.102 typ. 0.147 0.151 5/9 Package information STPS40120C Table 5. TO-220AB narrow leads dimensions Dimensions Ref. Millimeters Min. A P E F Typ. Inches Max. Min. Typ. Max. A 4.40 4.60 0.17 0.18 b 0.61 0.88 0.024 0.034 b1 0.95 1.20 0.037 0.047 c 0.48 0.70 0.019 0.027 D 15.25 15.75 0.60 0.62 Q H1 D1 D L20 L30 L1 b1(x3) L 1 2 0.05 E 10.00 10.40 0.39 0.41 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.19 0.20 F 1.23 1.32 0.048 0.052 H1 6.20 6.60 0.24 0.26 J1 2.40 2.72 0.095 0.107 L 13.00 14.00 0.51 0.55 L1 2.60 2.90 0.102 0.114 C b (x3) 6/9 J1 3 e e1 1.27 D1 L20 15.40 0.61 L30 28.90 1.14 ∅P 3.75 3.85 0.147 0.151 Q 2.65 2.95 0.104 0.116 Doc ID 11214 Rev 3 STPS40120C Package information Devices in I2PAK with nickel-plated back frame must NOT be mounted by frame soldering like SMDs. Such devices are intended to be through-hole mounted ONLY and in no circumstances shall ST be held liable for any lack of performance or damage arising out of soldering of nickel-plated back frames. I2PAK dimensions Table 6. Dimensions Ref. A E c2 L2 D L1 A1 b1 L b c Millimeters Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 A1 2.40 2.72 0.094 0.107 b 0.61 0.88 0.024 0.035 b1 1.14 1.70 0.044 0.067 c 0.49 0.70 0.019 0.028 c2 1.23 1.32 0.048 0.052 D 8.95 9.35 0.352 0.368 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.195 0.203 E 10 10.40 0.394 0.409 L 13 14 0.512 0.551 L1 3.50 3.93 0.138 0.155 L2 1.27 1.40 0.050 0.055 e e1 Doc ID 11214 Rev 3 7/9 Ordering information 3 STPS40120C Ordering information Table 7. Ordering information Order code STPS40120CT 4 Package Weight Base qty Delivery mode TO-220AB 2.2 g 50 Tube I PAK 1.49 g 50 Tube TO-220AB narrow leads 1.9 g 50 Tube STPS40120CT STPS40120CR STPS40120CR STPS40120CTN PS40120CTN 2 Revision history Table 8. 8/9 Marking Document revision history Date Revision Changes 18-Feb-2005 1 First issue 1-Dec-2006 2 Reformatted to current standards. Added I2PAK. 15-Sep-2011 3 Added TO-220AB narrow leads package. Doc ID 11214 Rev 3 STPS40120C Please Read Carefully: Information in this document is provided solely in connection with ST products. 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