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| (R) STPS20L40CF/CW/CT LOW DROP POWER SCHOTTKY RECTIFIER MAJOR PRODUCTS CHARACTERISTICS IF(AV) VRRM Tj (max) VF (max) 2 x 10 A 40 V 150C 0.5 V A1 A2 A1 K A2 K FEATURES AND BENEFITS LOW FORWARD VOLTAGE DROP MEANING VERY SMALL CONDUCTION LOSSES LOW DYNAMIC LOSSES AS A RESULT OF THE SCHOTTKY BARRIER AVALANCHERATED DESCRIPTION Dual center tap Schottky rectifiers designed for high frequencyswitched mode power supplies and DC to DC converters. These devices are intendedfor use in low voltage, high frequency inverters, free-wheeling and polarity protection applications. ABSOLUTE RATINGS (limiting values, per diode) Symbol Parameter VRRM Repetitive peak reverse voltage IF(RMS) RMS forward current IF(AV) Average forward TO-220AB current TO-247 A1 K A2 TO-220AB STPS20L40CT A2 K A1 ISOWATT220AB STPS20L40CF TO-247 STPS20L40CW Tc = 135C = 0.5 Per diode Per device Per diode Per device Value 40 30 10 20 10 20 180 1 2 - 65 to + 150 150 10000 Unit V A A A A A A C C V/s ISOWATT220AB Tc = 115C = 0.5 IFSM IRRM IRSM Tstg Tj dV/dt *: Surge non repetitive forward current Peak repetitive reverse current Non repetitive peak reverse current Storage temperature range Maximum operating junction temperature * Critical rate of rise of reverse voltage tp = 10 ms Sinusoidal tp=2 s square F=1kHz tp = 100 s square 1 dPtot thermal runaway condition for a diode on its own heatsink < Rth(j-a) dTj 1/6 August 1999 - Ed: 3A STPS20L40CF/CW/CT THERMAL RESISTANCES Symbol Rth(j-c) Junction to case Parameter ISOWATT220AB Per diode Total Coupling Per diode Total Coupling Per diode Total Coupling Value 4.5 3.5 2.5 2.2 1.20 0.3 2.2 1.3 0.3 Unit C/W Rth(j-c) Junction to case TO-247 C/W Rth(j-c) Junction to case TO-220AB C/W When the diodes 1 and 2 are used simultaneously : Tj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c) STATIC ELECTRICAL CHARACTERISTICS (per diode) Symbol IR * Parameter Reverse leakage current Forward voltage drop Tests Conditions Tj = 25C Tj = 100C Tj = 25C Tj = 125C Tj = 25C Tj = 125C Pulse test : * tp = 380 s, < 2% To evaluate the conduction losses use the following equation : P = 0.28 x IF(AV) + 0.022 IF2(RMS) IF = 10 A IF = 10 A IF = 20 A IF = 20 A 0.62 0.44 VR = VRRM 15 Min. Typ. Max. 0.7 35 0.55 0.5 0.73 0.72 Unit mA mA V VF * Fig. 1: Average forward power dissipation versus average forward current (per diode). PF(av)(W) 8 7 6 5 4 3 2 1 0 0 2 4 IF(av) (A) 6 8 10 =tp/T T = 1 = 0.05 = 0.1 = 0.2 = 0.5 Fig. 2: Average forward current versus ambient temperature( = 0.5, per diode). IF(av)(A) Rth(j-a)=Rth(j-c) TO-220AB/TO-247 tp 12 11 10 9 8 7 6 5 4 3 2 1 0 14 ISOWATT220AB Rth(j-a)=15C/W T =tp/T tp Tamb(C) 50 75 100 125 150 12 0 25 2/6 STPS20L40CF/CW/CT Fig. 3-1: Non repetitive surge peak forward current versus overload duration (maximum values, per diode, TO-220AB / TO-247). Fig. 3-1: Non repetitive surge peak forward current versus overload duration (maximum values, per diode, ISOWATT220AB). 140 120 100 80 60 40 IM(A) Tc=25C Tc=75C Tc=125C t IM 20 0 1E-3 =0.5 t(s) 1E-2 1E-1 1E+0 IM(A) 100 90 80 70 60 50 40 30 20 IM 10 0 1E-3 Tc=25C Tc=50C Tc=100C t =0.5 t(s) 1E-2 1E-1 1E+0 Fig. 4-1: Relative variation of thermal impedance junction to case versus pulse duration (TO-220AB / TO-247). Fig. 4-2: Relative variation of thermal impedance junction to case versus pulse duration (ISOWATT220AB). Zth(j-c)/Rth(j-c) 1.0 0.8 0.6 0.4 0.2 Single pulse = 0.5 Zth(j-c)/Rth(j-c) 1.0 0.8 0.6 0.4 T = 0.5 = 0.2 = 0.1 = 0.2 = 0.1 T 0.2 tp(s) =tp/T tp Single pulse tp(s) 1E-1 =tp/T tp 0.0 1E-3 1E-2 1E-1 1E+0 0.0 1E-3 1E-2 1E+0 1E+1 Fig. 5: Reverse leakage current versus reverse voltage applied (typical values, per diode). Fig. 6: Junction capacitance versus reverse voltage applied (typical values, per diode). C(pF) 2000 2E+2 1E+2 1E+1 1E+0 1E-1 IR(mA) Tj=150C Tj=125C 1000 Tj=75C F=1MHz Tj=25C Tj=25C 1E-2 VR(V) 1E-3 0 5 10 15 20 25 30 35 40 100 1 2 5 VR(V) 10 20 50 3/6 STPS20L40CF/CW/CT Fig. 7: Forward voltage drop versus forward current (maximum values) (per diode). 100.0 IFM(A) Typical values Tj=150C 10.0 Tj=125C Tj=25C 1.0 Tj=75C 0.1 0.0 VFM(V) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 PACKAGE MECHANICAL DATA ISOWATT220AB DIMENSIONS REF. A B D E F F1 F2 G G1 H L2 L3 L4 L6 L7 Diam Millimeters Min. Max. 4.40 4.60 2.50 2.70 2.50 2.75 0.40 0.70 0.75 1.00 1.15 1.70 1.15 1.70 4.95 5.20 2.40 2.70 10.00 10.40 16.00 typ. 28.60 30.60 9.80 10.60 15.90 16.40 9.00 9.30 3.00 3.20 Inches Min. Max. 0.173 0.181 0.098 0.106 0.098 0.108 0.016 0.028 0.030 0.039 0.045 0.067 0.045 0.067 0.195 0.205 0.094 0.106 0.394 0.409 0.630 typ. 1.125 1.205 0.386 0.417 0.626 0.646 0.354 0.366 0.118 0.126 Cooling method : C Recommended torque value : 0.55 m.N Maximum torque value : 0.70 m.N 4/6 STPS20L40CF/CW/CT PACKAGE MECHANICAL DATA TO-220AB DIMENSIONS REF. H2 Dia L5 C L7 L6 L2 F2 F1 L9 L4 F G1 G M E D A Millimeters Min. 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 A C D E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 M Diam. Cooling method : C Recommended torque value : 0.55 m.N Maximum torque value : 0.70 m.N 5/6 STPS20L40CF/CW/CT PACKAGE MECHANICAL DATA TO-247 DIMENSIONS V REF. Millimeters Inches V Dia. H A L5 L L2 L4 F2 F3 V2 F(x3) G = = M E F4 L3 F1 L1 D Min. Typ. Max. Min. Typ. Max. A 4.85 5.15 0.191 0.203 D 2.20 2.60 0.086 0.102 E 0.40 0.80 0.015 0.031 F 1.00 1.40 0.039 0.055 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 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 0.145 0.169 L2 18.50 0.728 L3 14.20 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. 3.55 3.65 0.139 0.143 Cooling method : C Recommended torque value : 0.8m.N Maximum torque value : 1.0m.N Ordering type STPS20L40CF STPS20L40CT STPS20L40CW Marking STPS20L40CF STPS20L40CT STPS20L40CW Package ISOWATT220AB TO-220AB TO-247 Weight 2.1g 2g 4.4g Base qty 50 50 30 Delivery mode Tube Tube 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. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 6/6 |
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