SDM40E20LC-7

**SDM40E20L /S /C /A** Green ® **DUAL SURFACE MOUNT SCHOTTKY BARRIER DIODE** _ 

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## **Features** 

- Very Low Forward Voltage Drop 

- Guard Ring Construction for Transient Protection 

- High Conductance 

- **Lead, Halogen and Antimony Free, RoHS Compliant "Green" Device (Notes 4, 5 and 6)** 

## **Mechanical Data** 

- Case: SOT-23 

- Case Material: Molded Plastic. UL Flammability Classification Rating 94V-0 

- Moisture Sensitivity: Level 1 per J-STD-020D 

- Polarity: See Diagram 

- Leads: Solderable per MIL-STD-202, Method 208 

- Terminals: SDM40E20L/S/A Finish ⎯ Matte Tin Finish annealed over Alloy 42 leadframe. SDM40E20LC Finish ⎯ Matte Tin Finish annealed over CDA194 leadframe. 

- Marking Information: See Page 2 

- Ordering Information: See Page 2 

- Weight: 0.008 grams (approximate) 

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Top View SDM40E20LS  SDM40E20LC SDM40E20LA<br>**----- End of picture text -----**<br>


## **Maximum Ratings** @TA = 25°C unless otherwise specified 

|Single phase, half wave, 60Hz, resistive or inductive load.<br>Forcapacitanceload, derate current by20%.||||
|---|---|---|---|
|**Characteristic**|**Symbol **|**Value**|**Unit**|
|Peak Repetitive Reverse Voltage<br>Working Peak Reverse Voltage<br>DC Blocking Voltage|VRRM<br>VRWM<br>VR|20|V|
|RMS Reverse Voltage|VR(RMS)|14|V|
|Forward Continuous Current(Note 1)|IFM|0.4|A|
|Non-Repetitive Peak Forward Surge Current<br>8.3ms singlehalfsine-wave superimposed on ratedload|IFSM|2|A|



## **Thermal Characteristics** 

|**Thermal Characteristics**||||
|---|---|---|---|
|**Characteristic**|**Symbol **|**Value**|**Unit**|
|Power Dissipation                                                            (Note 1)<br> (Note 2)|PD|225|mW|
|||300||
|Typical Thermal Resistance Junction to Ambient            (Note 1)<br> (Note 2)|RθJA|444|°C/W|
|||333||
|Operatingand Storage Temperature Range|TJ,TSTG|-65 to +125|°C|



## **Electrical Characteristics** @TA = 25°C unless otherwise specified 

|**Electrical Characteristics**@TA = 25°C unless otherwise specifiedA = 25°C unless otherwise specified= 25°C unless otherwise specified|@TA = 25°C unless otherwise specifiedA = 25°C unless otherwise specified= 25°C unless otherwise specified|@TA = 25°C unless otherwise specifiedA = 25°C unless otherwise specified= 25°C unless otherwise specified|||||
|---|---|---|---|---|---|---|
|**Characteristic**|**Symbol **|**Min**|**Typ**|**Max **|**Unit**|**Test Conditions**|
|Reverse Breakdown Voltage(Note 3)|V(BR)R|20|⎯|⎯|V|IR= 0.5mA|
|Forward Voltage Drop|(BR)R<br>VF|⎯<br>⎯|⎯<br>⎯|0.310<br>0.430|V|IF= 0.1A<br>IF= 0.5A|
|Leakage Current (Note 3)|IR|⎯<br>⎯|⎯<br>⎯|100<br>250|μA|VR= 10V<br>VR= 20V|
|Total Capacitance|CT|⎯|120|⎯|pF|f = 1MHz,VR= 0VDC|



- Notes: 1.  Device mounted on FR-5 1.0 x 0.75 x 0.062 inch PCB pad layout. 

   2.  Device mounted on Alumina PCB, 0.4 inch x 0.3 inch x 0.024 inch pad layout. 

   3.  Short duration pulse test used to minimize self-heating effect. 

   4.  No purposefully added lead. Halogen and Antimony Free. 

   5.  Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php. 

   6.  Product manufactured with Green Molding Compound and does not contain Halogens or Sb2O3 Fire Retardants. 

1 of 3 **www.diodes.com** 

SDM40E20L /S /C /A Document number: DS30298 Rev. 11 - 2 

June 2008 © Diodes Incorporated 

**SDM40E20L /S /C /A** 

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10 ===—=====—<br>ee<br>1<br>0.1<br>0.01<br>0.001 i<br>0 0.2 0.4 0.6 0.8 1.0<br>VF, INSTANTANEOUS FORWARD VOLTAGE (V)<br>Fig. 1  Typical Forward Characteristics, Per Element<br>14<br>f = 1.0MHz<br>“Lt TEL<br>ALLELLEE  LL<br>ELL<br>60 "TEL ELLE<br>40 ACEEEECE<br>Ox<br>20<br>0 LE<br>LE LET<br>0 5 10 15 20<br>VR, DC REVERSE VOLTAGE (V)<br>Fig. 3 Total Capacitance vs. Reverse Voltage, Per Element<br>, INSTANTANEOUS FORWARD CURRENT (A)<br>IF<br>T<br>C , TOTAL CAPACITANCE (pF)<br>**----- End of picture text -----**<br>


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10,000 —<—_———<br>1000<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001 —————<br>0 10 20<br>VR, INSTANTANEOUS REVERSE VOLTAGE (V)<br>Fig. 2 Typical Reverse Characteristics, Per Element<br>0.40 TALL.<br>0.30<br>IN| tt<br>pf AT [Ef]<br>0.20<br>{Nftf<br>0.10<br>tt Att<br>0 Pt]tT EE | | LNAL I<br>0 25 50 75 100 125 150<br>TA, AMBIENT TEMPERATURE (°C)<br>Fig. 4  Forward Current Derating Curve, Per Element<br>, INSTANTANEOUS REVERSE CURRENT (µA)<br>IR<br>RAGE FORWARD CURRENT (A)<br>, AVE<br>IF(AV)<br>**----- End of picture text -----**<br>


## **Ordering Information** (Note 7) 

|**Ordering Informationg Information Information** (Note 7)|**Ordering Informationg Information Information** (Note 7)|**Ordering Informationg Information Information** (Note 7)|
|---|---|---|
||||
|**Part Number**|**Case**|**Packaging**|
|SDM40E20LS-7-F|SOT-23|3000/Tape &Reel|
|SDM40E20LC-7|SOT-23|3000/Tape &Reel|
|SDM40E20LA-7|SOT-23|3000/Tape &Reel|



## **Marking Information** 

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KSW = SDM40E20LS Product   KWS = SDM40E20LC Product   KWA = SDM40E20LA Product<br>KSW             Type Marking Code   KWS     Type Marking Code   KWA             Type Marking Code<br>YM = Date Code Marking  YM = Date Code Marking  YM = Date Code Marking<br>Y = Year ex: T = 2006  Y =Year ex: T = 2006  Y =Year ex: T = 2006<br>M = Month ex: 9 = September M = Month ex: 9 = September       M = Month ex: 9 = September<br>Date Code Key<br>Year 2005 2006 2007 2008 2009 2010 2011 2012 2013  2014  2015<br>Code S  T  U  V  W  X  Y  Z  A  B  C<br>; —_| | _} _+—_ + | + _}+ ++} +<br>Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec<br>Code 1  2  3  4  5  6  7  8  9  O  N  D<br>/-;—_|- |_| _+—_ + _+—_ | ++ ++ + +<br>SDM40E20L /S /C /A 2 of 3  June 2008<br>Document number: DS30298 Rev. 11 - 2 www.diodes.com   © Diodes Incorporated<br>YM YM YM<br>**----- End of picture text -----**<br>


**SDM40E20L /S /C /A** [| 

## **Package Outline Dimensions** 

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A<br>SOT-23<br>Dim  Min  Max<br>a A  0.37  0.51<br>B C B  1.20 1.40<br>C 2.30 2.50<br>D  0.89 1.03<br>G F  0.45 0.60<br>EE H G 1.78 2.05<br>H  2.80 3.00<br>K M J 0.013 0.10<br>K  0.903 1.10<br>L  0.45 0.61<br>AI J D F  , L M  0.085 0.180<br>J α 0°  8°<br>All Dimensions in mm<br>Suggested Pad Layout<br>Y Dimensions Value (in mm)<br>Z  2.9<br>Z C X  0.8<br>Y  0.9<br>C 2.0<br>E  1.35<br>“ae<br>X E<br>Le<br>**----- End of picture text -----**<br>


## IMPORTANT NOTICE 

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages. 

## LIFE SUPPORT 

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. 

3 of 3 **www.diodes.com** 

SDM40E20L /S /C /A Document number: DS30298 Rev. 11 - 2 

June 2008 © Diodes Incorporated