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SDM20U40
SURFACE MOUNT SCHOTTKY BARRIER DIODE
Features
* * * * * * * * 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
Mechanical Data
* * * * * * * * 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 Symbol VRRM VRWM VR VR(RMS) IFM IFSM Value 40 28 250 1.0 Unit V V mA A
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
Thermal Characteristics
Characteristic Power Dissipation (Note 2) Thermal Resistance, Junction to Ambient Air (Note 2) Operating and Storage Temperature Range Symbol PD RJA TJ, TSTG Value 150 667 -65 to +125 Unit mW C/W C
Electrical Characteristics
Characteristic Reverse Breakdown Voltage (Note 5) Forward Voltage Drop Peak Reverse Current (Note 5) Total Capacitance Reverse Recovery Time
Notes: 1. 2. 3. 4.
@TA = 25C unless otherwise specified Symbol V(BR)R VF IR CT trr Min 40 Typ 50 10 Max 0.37 0.60 5 1 Unit V V A A pF ns 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
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
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March 2010
(c) Diodes Incorporated
SDM20U40
IF, INSTANTANEOUS FORWARD CURRENT (mA)
IR, INSTANTANEOUS REVERSE CURRENT (A)
1,000
1,000
TA = 125C
100
TA = 125C
100
TA = 75C
10
TA = 75C
10
1
1
TA = 25C
0.1
T A = 25C
0.1
0.01
TA = -25C
0.01
TA = -25C
0.001 800 0 600 200 400 VF, INSTANTANEOUS FORWARD VOLTAGE (mV) Fig. 1 Typical Forward Characteristics
0.001 40 30 10 20 1 VR, INSTANTANEOUS REVERSE VOLTAGE (V) Fig. 2 Typical Reverse Characteristics
100
f = 1MHz
200
CT, TOTAL CAPACITANCE (pF)
PD, POWER DISSIPATION (mW)
0 10 20 30 40 VR, DC REVERSE VOLTAGE (V) Fig. 3 Total Capacitance vs. Reverse Voltage
150
10
100
1.0
50
0.1
0
0
25 75 50 100 TA, AMBIENT TEMPERATURE (C) Fig. 4 Power Derating Curve
125
Ordering Information
(Notes 4 and 6) Packaging SOD-523 Shipping 3000/Tape & Reel
Device SDM20U40-7 (Note 7)
Notes:
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
S4 = Product Type Marking Code
SDM20U40
Document number: DS30393 Rev. 9 - 2
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March 2010
(c) Diodes Incorporated
SDM20U40
Package Outline Dimensions
L
C
H
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
A B K M
Suggested Pad Layout
C
X
Y
G Z
Dimensions Value (in mm) Z 2.3 G 1.1 X 0.8 0.6 Y 1.7 C
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). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. 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. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright (c) 2010, Diodes Incorporated www.diodes.com
SDM20U40
Document number: DS30393 Rev. 9 - 2
4 of 4 www.diodes.com
March 2010
(c) Diodes Incorporated

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