1N4448WSF-7

**1N4448WSF** 

**SURFACE MOUNT FAST SWITCHING DIODE** 

| 

• • • • • • SOD323F Top View rs 

## **Features** 

## **Mechanical Data** 

Case: SOD323F 

- Fast Switching Speed: trr ≤ 4.0ns • 

   - Case Material: Molded Plastic, “Green Molding Compound”. UL Flammability Classification Rating 94V-0 Moisture Sensitivity: Level 1 per J-STD-020 

- Low Leakage Current: IR ≤ 25nA 

- Low Capacitance: CT ≤ 4pF 

- Flat Lead for High Thermal Efficiency 

   - Terminal Connections: Cathode Band 

- Small Surface Mount Package 

   - Terminals: Finish - Matte Tin annealed over Copper Alloy leadframe.  Solderable per MIL-STD-202, Method 208 Weight: 0.007 grams (approximate) 

- **Lead, Halogen and Antimony Free, RoHS Compliant (Note 1)** • 

- **"Green" Device (Note 2)** 

- 

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

## **Ordering Information** (Note 3) 

|**Ordering Informationg Information Information** (Note 3)|**Ordering Informationg Information Information** (Note 3)|**Ordering Informationg Information Information** (Note 3)|**Ordering Informationg Information Information** (Note 3)|
|---|---|---|---|
|||||
|**Part Number**|Qualification|**Case**|**Packaging**|
|1N4448WSF-7|Commercial|SOD323F|3000/Tape & Reel|
|1N4448WSFQ-7|Automotive|SOD323F|3000/Tape &Reel|



- Notes: 1. No purposefully added lead. Halogen and Antimony Free. 

   2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com. 

   3. For packaging details, go to our website at http://www.diodes.com. 

## **Marking Information** 

TK = Product Type Marking Code YM = Date Code Marking **TK** Y = Year (ex: Y = 2011) qi M = Month (ex: 9 = September) 

Date Code Key **Year 2011 2012 2013 2014 2015 2016 2017 2018 Code** Y Z A B C D E F ~~BS~~ **Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec** ~~ee~~ **Code** 1 2 3 4 5 6 7 8 9 O N D 

1 of 4 **www.diodes.com** 

1N4448WSF Document number: DS35380 Rev. 3 - 2 

August 2011 © Diodes Incorporated 

**1N4448WSF** 

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

|**Maximum Ratingsgss** @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 **|**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 4)|PD|400|mW|
|Thermal Resistance Junction to Ambient Air(Note 4)|RθJA|313|°C/W|
|Operatingand Storage Temperature Range|TJ,TSTG|-65 to +150|°C|



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

**Characteristic Symbol Min Max Unit Test Condition** ~~A~~ Reverse Breakdown Voltage (Note 5) V(BR)R 75 ⎯ V IR = 100μA 0.62 0.72 IF = 5.0mA Forward Voltage VF ⎯⎯ 0.855 1.0 V IIFF = 10mA  = 100mA ~~2~~ ⎯ 1.25 IF = 150mA ⎯ 2.5 μA VR = 75V ⎯ 50 μA VR = 75V, TJ = 150°C Leakage Current (Note 5) IR ⎯ 30 μA VR = 25V, TJ = 150°C ~~a ————ee~~ ⎯ 25 nA VR = 20V Total Capacitance CT ⎯ 4.0 pF VR = 0, f = 1.0MHz Reverse Recovery Time trr ⎯ 4.0 ns IF = IR = 10mA, ~~eeee ee ee~~ Irr = 0.1 x IR, RL ~~ee~~ = 100Ω Notes: 4. Part mounted on FR-4 PC board with minimum recommended pad layouts, which can be found on our website at http://www/diodes.com. 

5. Short duration pulse test used to minimize self-heating. 

2 of 4 **www.diodes.com** 

1N4448WSF Document number: DS35380 Rev. 3 - 2 

August 2011 © Diodes Incorporated 

**1N4448WSF** 

**==> picture [541 x 444] intentionally omitted <==**

**----- Start of picture text -----**<br>
500 1<br>400<br>0.1<br>Note 4<br>300<br>0.01<br>200<br>0.001<br>100<br>0 0.0001<br>0 25 50 75 100 125 150 0 0.4 0.8 1.2 1.6<br>TA, AMBIENT TEMPERATURE (°C) VF, INSTANTANEOUS FORWARD VOLTAGE (V)<br>Fig. 1  Forward Current Derating Curve Fig. 2  Typical Forward Characteristics<br>100 1.5<br>f = 1MHz<br>10 T A  = 150° C<br>: ee<br>(7a T A  = 251 ° C<br>1<br>1<br>= T A  = 58 ° C a<br>0.1<br>TA = 25°C 0.5<br>0.01<br>TA = -55°C<br>0.001 0<br>0 10 20 30 40 50 60 70 80 90 100 1 10 40<br>VR, INSTANTANEOUS REVERSE VOLTAGE (V) VR, DC REVERSE VOLTAGE (V)<br>Fig. 3  Typical Reverse Characteristics Fig. 4  Total Capacitance vs. Reverse Voltage<br>POWER DISSIPATION (mW)D,<br>P<br>, INSTANTANEOUS FORWARD CURRENT (A)<br>IF<br>A)<br>NEW PRODUCT  μ<br>, TOTAL CAPACITANCE (pF)<br>T<br>C<br>, INSTANTANEOUS REVERSE CURRENT(<br>IR<br>**----- End of picture text -----**<br>


## **Package Outline Dimensions** 

**==> picture [356 x 152] intentionally omitted <==**

**----- Start of picture text -----**<br>
He oo SOD323F<br>/-——_ E —— es Dim  ee Min  Max  ee Typ<br>A  0.60  0.75  −<br>b  0.25  0.35  −<br>| ——— es c  0.05  ee 0.26  −<br>D | | Ft b (2x) e D  e 1.1 ee 5 e 1.35 1.25<br>E  1.60 1.80 1.70<br>es ee<br>He  2.30  2.70  2.50<br>| | es eeee ee<br>α1 : β1 es L1  0.30  ee 0.50  ee 0.40<br>α1  − − 7°<br>α2  − − 3°<br>A β1  − − 7°<br>c β2  − − 3°<br>All Dimensions in mm<br>J α2 ==] L1 EE] β2  EE<br>**----- End of picture text -----**<br>


3 of 4 **www.diodes.com** 

1N4448WSF Document number: DS35380 Rev. 3 - 2 

August 2011 © Diodes Incorporated 

**1N4448WSF** 

## **Suggested Pad Layout** 

|~~_$—____ ~~|~~_$—____ ~~|~~_$—____ ~~|~~C~~<br>|~~—____,~~|||||
|---|---|---|---|---|---|---|---|---|
|||||Y (2x)<br>~~X (2x)~~<br>~~=i~~|||**Dimensions**<br>**X**<br>**Y**<br>**C**|**Value (in mm)**<br>0.710<br>0.403<br>2.700|



## **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 © 2011, Diodes Incorporated 

**www.diodes.com** 

4 of 4 **www.diodes.com** 

1N4448WSF Document number: DS35380 Rev. 3 - 2 

August 2011 © Diodes Incorporated