STPS40L15CW/CT ® LOW DROP OR-ing POWER SCHOTTKY DIODE MAJOR PRODUCT CHARACTERISTICS A1 IF(AV) 2 x 20 A VRRM 15 V Tj (max) 125°C VF (max) 0.33 V K A2 FEATURES AND BENEFITS n n n VERY LOW FORWARD VOLTAGE DROP FOR LESS POWER DISSIPATION AND REDUCED HEATSINK SIZE REVERSE VOLTAGE SUITED TO OR-ing OF 3V, 5V and 12V RAILS AVALANCHE CAPABILITY SPECIFIED A1 K A2 A2 K A1 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. TO-220AB STPS40L15CT TO-247 STPS40L15CW ABSOLUTE RATINGS (limiting values, per diode) Symbol VRRM IF(RMS) IF(AV) Parameter Value 15 Unit V 30 A Total 40 A Per diode 20 Repetitive peak reverse voltage RMS forward current Average forward current Tcase = 140°C δ=1 IFSM Surge non repetitive forward current tp = 10 ms Sinusoidal IRRM Peak repetitive reverse current IRSM PARM Tstg Tj dV/dt * : 310 A tp = 2 µs F = 1kHz 2 A Non repetitive peak reverse current tp = 100 µs 3 A Repetitive peak avalanche power tp = 1µs 13140 W - 65 to + 150 °C 125 °C 10000 V/µs Storage temperature range Tj = 25°C Maximum operating junction temperature * Critical rate of rise of reverse voltage dPtot 1 thermal runaway condition for a diode on its own heatsink < dTj Rth( j − a ) July 2003 - Ed: 5A 1/5 STPS40L15CW/CT THERMAL RESISTANCES Symbol Rth(j-c) Parameter Value 1.6 0.85 0.1 Per diode Total Coupling Junction to case Rth (c) Unit °C/W °C/W STATIC ELECTRICAL CHARACTERISTICS (Per diode) Symbol IR * Parameter VF * Tests Conditions Min. Typ. Max. 6 200 500 VR = VRRM Reverse leakage current Tj = 25°C Forward voltage drop 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 Tj = 100°C Unit mA V 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) Fig. 1: Average forward power dissipation versus average forward current (per diode). 8 IF(av)(A) PF(av)(W) δ = 0.1 7 δ = 0.05 δ = 0.5 δ = 0.2 δ=1 6 5 4 3 T 2 1 0 Fig. 2: Average forward current versus ambient temperature (δ=1, per diode). δ=tp/T IF(av) (A) 0 2 4 6 8 10 12 14 16 18 tp 20 22 Fig. 3: 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 Tamb(°C) 50 75 100 125 150 Fig. 4: Normalized avalanche power derating versus junction temperature. PARM(tp) PARM(1µs) 1 tp 1.2 PARM(tp) PARM(25°C) 1 0.1 0.8 0.6 0.01 0.4 0.2 0.01 2/5 Tj(°C) tp(µs) 0.001 0 0.1 1 10 100 1000 0 25 50 75 100 125 150 STPS40L15CW/CT Fig. 5: Non repetitive surge peak forward current versus overload duration (maximum values per diode). Fig. 6: 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 δ = 0.5 0.6 Tc=50°C 100 0.4 Tc=75°C δ = 0.2 IM Tc=110°C 50 0.2 t δ=0.5 tp (s) t(s) 1E-2 1E-1 1E+0 Fig. 7: Reverse leakage current versus reverse voltage applied (typical values per diode). 0.0 1.0E-4 1.0E-3 1.0E-2 1.0E-1 tp 1.0E+0 Fig. 8: Junction capacitance versus reverse voltage applied (typical values per diode). 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 δ=tp/T Single pulse 0 1E-3 5E+2 T δ = 0.1 VR(V) VR(V) 0 2 4 6 8 10 12 14 16 Fig. 9: Forward voltage drop versus forward current (typical values per diode). 0.1 1 5 10 20 Fig. 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 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 VFM(V) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 3/5 STPS40L15CW/CT PACKAGE MECHANICAL DATA TO-220AB DIMENSIONS REF. Millimeters Min. A H2 Dia C L5 L7 L6 L2 F2 F1 D L9 L4 F M G1 E G n n n Cooling method: C Recommended torque value: 0.55 m.N Maximum torque value: 0.70 m.N 4/5 A C D E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 M Diam. Max. 4.40 4.60 1.23 1.32 2.40 2.72 0.49 0.70 0.61 0.88 1.14 1.70 1.14 1.70 4.95 5.15 2.40 2.70 10 10.40 16.4 typ. 13 14 2.65 2.95 15.25 15.75 6.20 6.60 3.50 3.93 2.6 typ. 3.75 3.85 Inches Min. Max. 0.173 0.181 0.048 0.051 0.094 0.107 0.019 0.027 0.024 0.034 0.044 0.066 0.044 0.066 0.194 0.202 0.094 0.106 0.393 0.409 0.645 typ. 0.511 0.551 0.104 0.116 0.600 0.620 0.244 0.259 0.137 0.154 0.102 typ. 0.147 0.151 STPS40L15CW/CT PACKAGE MECHANICAL DATA TO-247 DIMENSIONS REF. V Millimeters Inches Min. Typ. Max. Min. Typ. Max. Dia. V A H L5 L L2 L4 F2 F1 L1 F3 V2 F4 D L3 F(x3) M G = n n n = 0.203 0.102 0.031 0.055 0.118 0.078 0.094 0.133 0.429 0.620 0.793 0.169 0.728 0.582 1.362 0.216 0.118 5° 60° 0.143 Cooling method: C Recommended torque value: 0.8 m.N Maximum torque value: 1.0 m.N Ordering type n E A 4.85 5.15 0.191 D 2.20 2.60 0.086 E 0.40 0.80 0.015 F 1.00 1.40 0.039 F1 3.00 F2 2.00 F3 2.00 2.40 0.078 F4 3.00 3.40 0.118 G 10.90 H 15.45 15.75 0.608 L 19.85 20.15 0.781 L1 3.70 4.30 0.145 L2 18.50 L3 14.20 14.80 0.559 L4 34.60 L5 5.50 M 2.00 3.00 0.078 V 5° V2 60° Dia. 3.55 3.65 0.139 Marking Package Weight Base qty Delivery mode STPS40L15CW STPS40L15CW TO-247 4.4 g. 30 Tube STPS40L15CT STPS40L15CT TO-220AB 2g 50 Tube Epoxy meets UL94,V0 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. 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