1N4448WSQ-7-F

**1N4448WS** TT **SURFACE MOUNT FAST SWITCHING DIODE** 

## **Features** 

## **Mechanical Data** 

- Fast Switching Speed 

- Small Surface Mount Package 

- For General Purpose Switching Applications 

- High Conductance 

- **Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)** 

- **Halogen and Antimony Free. “Green” Device (Note 3)** 

- **Qualified to AEC-Q101 Standards for High Reliability** 

- **PPAP Capable (Note 4)** 

- Case: SOD323 

- Case Material:  Molded Plastic, “Green” Molding Compound. UL Flammability Classification Rating 94V-0 

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

- Leads: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead-Free Plating). Solderable per MIL-STD-202, Method 208 

- Polarity: Cathode Band 

- Weight: 0.004 grams (Approximate) 

e SOD323 

Top View 

Device Schematic 

## **Ordering Information** (Note 5) 

|**Ordering Informationg Information Information** (Note 5)|**Ordering Informationg Information Information** (Note 5)|**Ordering Informationg Information Information** (Note 5)|**Ordering Informationg Information Information** (Note 5)|**Ordering Informationg Information Information** (Note 5)|
|---|---|---|---|---|
|**Part Number**<br>**Compliance**<br>**Case**<br>**Packaging**<br>1N4448WS-7-F<br>Standard<br>SOD323<br>3,000/Tape & Reel<br>1N4448WSQ-7-F<br>Automotive<br>SOD323<br>3,000/Tape & Reel|||||
||**Part Number**|**Compliance**|**Case**|**Packaging**|
||1N4448WS-7-F|Standard|SOD323|3,000/Tape & Reel|
||1N4448WSQ-7-F|Automotive|SOD323|3,000/Tape & Reel|



- Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 

   2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 

   3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 

4. Automotive products are AEC-Q101 qualified and are PPAP capable. For more information, please refer to 

http://www.diodes.com/product_compliance_definitions.html. 

   5. For packaging details, go to our website at http://www.diodes.com/products/packages.html. 

## **Marking Information** 

Cathode Band 

SOD323 T5 T5 = Product Type Marking Code qf 

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1N4448WS Document number: DS30096 Rev. 15 - 2 

November 2015 © Diodes Incorporated 

**1N4448WS** 

## **Maximum Ratings** (@TA = +25°C, unless otherwise specified.) 

|**Maximum Ratingsgss** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|||
|---|---|---|---|
|**Characteristic**|**Symbol**|**Value**|**Unit**|
|Non-Repetitive Peak Reverse Voltage|VRM|100|V|
|Peak Repetitive Reverse Voltage<br>Working Peak Reverse Voltage<br>DC Blocking Voltage|VRRM<br>VRWM<br>VR|75|V|
|RMS Reverse Voltage|VR(RMS)|53|V|
|Forward Continuous Current|IFM|500|mA|
|Average Rectified Output Current|IO|250|mA|
|Non-Repetitive Peak Forward Surge Current<br>@t = 1.0μs<br>@t = 1.0s|IFSM|4<br>0.5|A|



## **Thermal Characteristics** 

|**Thermal Characteristics**||||
|---|---|---|---|
|**Characteristic**|**Symbol**|**Value**|**Unit**|
|Power Dissipation (Note 7)|PD|200|mW|
|Thermal Resistance Junction to Ambient Air (Note 7)|RθJA|625|°C/W|
|Operatingand Storage Temperature Range|TJ, TSTG|-65 to +150|°C|



## **Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) 

|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)||||
|---|---|---|---|---|---|
|**Characteristic**|**Symbol**|**Min**|**Max**|**Unit**|**Test Condition**|
|Reverse Breakdown Voltage (Note 6)|V(BR)R|75||V|IR= 2.5µA|
|Forward Voltage|VFM|0.62<br><br><br>|0.72<br>0.855<br>1.0<br>1.25|V|IF= 5.0mA<br>IF= 10mA<br>IF= 100mA<br>IF= 150mA|
|Peak Reverse Current (Note 6)|IRM||2.5<br>50<br>30<br>25|µA<br>µA<br>µA<br>nA|VR= 75V<br>VR= 75V, TJ= +150°C<br>VR= 25V, TJ= +150°C<br>VR= 20V|
|Total Capacitance|CT||4.0|pF|VR= 0, f = 1.0MHz|
|Reverse Recovery Time|tRR||4.0|ns|IF= IR= 10mA,<br>IRR= 0.1 x IR, RL= 100Ω|



- Notes: 6. Short duration pulse test used to minimize self-heating. 

7. Part mounted on FR-4 PC board with minimum recommended pad layouts, which can be found on our website http://www.diodes.com/datasheets/ap02001.pdf. 

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1N4448WS Document number: DS30096 Rev. 15 - 2 

November 2015 © Diodes Incorporated 

**1N4448WS** 

**==> picture [220 x 664] intentionally omitted <==**

**----- Start of picture text -----**<br>
300<br>200<br>Note 7<br>100<br>0<br>0 25 50 75 100 125 150<br>TA, AMBIENT TEMPERATURE (° C)<br>Figure 1  Forward Current Derating Curve<br>10.0<br>TA = 100°C<br>1.0<br>TA = 75°C<br>FREE e ee<br>0.10 TA = 50°C<br>TA = 25°C<br>e e e<br>0.01 TA = 0°C<br>TA = -30°C<br>Sa SEE<br>0.001 Pitt CECE ete e ett p y yee<br>0 20 40 60 80<br>VR, INSTANTANEOUS REVERSE VOLTAGE (V)<br>Figure 3  Typical Reverse Characteristics<br>2.5 CCE eee<br>2.0<br>PE E<br>CCPCE eee<br>1.5 DEERE<br>EEE =<br>PEPE<br>1.0 CEE<br>0.5 COP eee<br>[ityty yy yy<br>0 CEE<br>0 2 4 6 8 10<br>IF, FORWARD CURRENT (mA)<br>Figure 5  Reverse Recovery Time vs. Forward Current<br>POWER DISSIPATION (mW)D,<br>P<br>A)<br>µ<br>, INSTANTANEOUS REVERSE CURRENT(<br>IR<br>, REVERSE RECOVERY TIME (nS)<br>trr<br>**----- End of picture text -----**<br>


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1000<br>=== ==<br>100<br>fff<br>TA = 150°C<br>T A  = 125°C []/ fief j |<br>10 A TA = 85°C<br>So eaeae TA  = 25°C<br>1<br>ff<br>T A  = -55°C<br>ee 2 ee ee ee ee ee ee<br>0.1 VfLP pe<br>0 200 400 600 800 1000 1200 1400 1600<br>V F, INSTANTANEOUS FORWARD VOLTAGE (mV)<br>Figure 2 Typical Forward Characteristics<br>4<br>f = 1MHz<br>3<br>2<br>1<br>||<br>0 ||<br>| tt<br>0 1 2 3 4 5 6<br>VR, DC REVERSE VOLTAGE (V)<br>Figure 4  Total Capacitance vs. Reverse Voltage<br>, INSTANTANEOUS FORWARD CURRENT (mA)<br>IF<br>, TOTAL CAPACITANCE (pF)<br>T<br>C<br>**----- End of picture text -----**<br>


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1N4448WS Document number: DS30096 Rev. 15 - 2 

November 2015 © Diodes Incorporated 

**1N4448WS** 

## **Package Outline Dimensions** 

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. 

**==> picture [324 x 200] intentionally omitted <==**

**----- Start of picture text -----**<br>
(TT\ A2 Ty<br>A1<br>a<br>c fo Sh, L P aa;|<br>He<br>E<br>b D<br>raeey<br>**----- End of picture text -----**<br>


|**SOD323**|**SOD323**|**SOD323**|**SOD323**|
|---|---|---|---|
|**Dim**|**Min**|**Max**|**Typ**|
|**A1**|--|0.10|**yp**<br>0.05|
|**A2**|1.00|1.10|1.05|
|**b**|0.25|0.35|0.30|
|**c**|0.10|0.15|0.11|
|**D**|1.20|1.40|1.30|
|**E**|1.60|1.80|1.70|
|**He**|2.30|2.70|2.50|
|**L**|0.20|0.40|0.30|
|**a**|0°|8°|--|
|**All Dimensions in mm**||||



## **Suggested Pad Layout** 

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. 

**==> picture [179 x 74] intentionally omitted <==**

**----- Start of picture text -----**<br>
X1<br>Y<br>Be<br>X<br>Se<br>**----- End of picture text -----**<br>


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Dimensions Value (in mm)<br>X  0.590<br>X1  2.700<br>Y  0.450<br>EE<br>**----- End of picture text -----**<br>


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1N4448WS Document number: DS30096 Rev. 15 - 2 

November 2015 © Diodes Incorporated 

**1N4448WS** 

## **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. 

This document is written in English but may be translated into multiple languages for reference.  Only the English version of this document is the final and determinative format released by Diodes Incorporated. 

## **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 © 2015, Diodes Incorporated 

**www.diodes.com** 

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1N4448WS Document number: DS30096 Rev. 15 - 2 

November 2015 © Diodes Incorporated