SDM20U40 SURFACE MOUNT SCHOTTKY BARRIER DIODE Features Mechanical Data * * * * * * * * * * Low Forward Voltage Drop Guard Ring Construction for Transient Protection Negligible Reverse Recovery Time Low Reverse Capacitance Ultra-Small Surface Mount Package Lead Free By Design/RoHS Compliant (Note 1) "Green" Device (Notes 3 and 4) Qualified to AEC-Q101 Standards for High Reliability * * * * * * Case: SOD-523 Case Material: Molded Plastic, "Green" Molding Compound, Note 4. UL Flammability Classification Rating 94V-0 Moisture Sensitivity: Level 1 per J-STD-020 Terminal Connections: Cathode Band Terminals: Finish - Matte Tin annealed over Alloy 42 leadframe. Solderable per MIL-STD-202, Method 208 Marking Information: See Page 2 Ordering Information: See Page 2 Weight: 0.002 grams (approximate) Top View Maximum Ratings @TA = 25C unless otherwise specified Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Forward Continuous Current (Note 2) Non-Repetitive Peak Forward Surge Current @ t 1.0s Symbol VRRM VRWM VR VR(RMS) IFM IFSM Value Unit 40 V 28 250 1.0 V mA A Symbol PD RJA TJ, TSTG Value 150 667 -65 to +125 Unit mW C/W C Thermal Characteristics Characteristic Power Dissipation (Note 2) Thermal Resistance, Junction to Ambient Air (Note 2) Operating and Storage Temperature Range Electrical Characteristics Characteristic Reverse Breakdown Voltage (Note 5) @TA = 25C unless otherwise specified Symbol V(BR)R Min 40 Typ Forward Voltage Drop VF Peak Reverse Current (Note 5) IR Total Capacitance CT Reverse Recovery Time trr Notes: Max 0.37 0.60 Unit V 5 1 50 A A pF 10 ns V Test Conditions IR = 10A IF = 20mA IF = 200mA VR = 30V VR = 10V VR = 0V, f = 1.0MHz IF = IR = 200mA, Irr = 0.1 x IR, RL = 100 1. 2. 3. 4. No purposefully added lead. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Diodes Inc.'s "Green" Policy can be found on our website at http://www.diodes.com/products/lead_free/index.php. Product manufactured with date code 0627 (week 27, 2006) and newer are built with Green Molding Compound. Product manufactured prior to date code 0627 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants. 5. Short duration pulse test used so as to minimize self-heating effect. SDM20U40 Document number: DS30393 Rev. 9 - 2 1 of 4 www.diodes.com March 2010 (c) Diodes Incorporated 1,000 100 TA = 125C 10 TA = 75C 1 T A = 25C 0.1 TA = -25C 0.01 0.001 800 0 600 200 400 VF, INSTANTANEOUS FORWARD VOLTAGE (mV) Fig. 1 Typical Forward Characteristics IR, INSTANTANEOUS REVERSE CURRENT (A) IF, INSTANTANEOUS FORWARD CURRENT (mA) SDM20U40 1,000 TA = 125C 100 TA = 75C 10 1 TA = 25C 0.1 TA = -25C 0.01 0.001 40 30 10 20 1 VR, INSTANTANEOUS REVERSE VOLTAGE (V) Fig. 2 Typical Reverse Characteristics 200 100 PD, POWER DISSIPATION (mW) CT, TOTAL CAPACITANCE (pF) f = 1MHz 10 1.0 150 0.1 0 0 25 75 50 100 TA, AMBIENT TEMPERATURE (C) Fig. 4 Power Derating Curve 125 (Notes 4 and 6) Device SDM20U40-7 (Note 7) Notes: 50 0 10 20 30 40 VR, DC REVERSE VOLTAGE (V) Fig. 3 Total Capacitance vs. Reverse Voltage Ordering Information 100 Packaging SOD-523 Shipping 3000/Tape & Reel 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf. 7. Dispensed in every other cavity of the tape. Marking Information S4 SDM20U40 Document number: DS30393 Rev. 9 - 2 S4 = Product Type Marking Code 2 of 4 www.diodes.com March 2010 (c) Diodes Incorporated SDM20U40 Package Outline Dimensions L C SOD-523 Dim Min Max A 0.25 0.35 B 0.70 0.90 C 1.50 1.70 H 1.10 1.30 K 0.55 0.65 L 0.10 0.30 M 0.10 0.12 All Dimensions in mm H M A K B Suggested Pad Layout C X Y G Dimensions Value (in mm) Z 2.3 G 1.1 X 0.8 0.6 Y 1.7 C Z SDM20U40 Document number: DS30393 Rev. 9 - 2 3 of 4 www.diodes.com March 2010 (c) Diodes Incorporated SDM20U40 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 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