Diodes 1N4448W User Manual

Features

• Fast Switching Speed

• Surface Mount Package Ideally Suited for Automated Insertion

• 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

FAST SWITCHING SURFACE MOUNT DIODE

Mechanical Data

• Case: SOD123

• Case Material: Molded Plastic. UL Flammability Classification

Rating 94V-0

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

• Terminals: Matte Tin Finish annealed over Alloy 42 leadframe

(Lead Free Plating). Solderable per MIL-STD-202, Method 208

• Polarity: Cathode Band

• Weight: 0.01 grams (approximate)

SOD123

Top View

1N4448W

Ordering Information (Note 4)

Part Number Compliance Case Packaging

1N4448W-7-F Standard SOD123 3000/Tape & Reel

1N4448WQ-7-F Automotive SOD123 3000/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. For packaging details, go to our website at http://www.diodes.com/products/packages.html

Marking Information

Date Code Key

Year 1998 1999 2000 … 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

Code J K L … U V W X Y Z A B C D E F G

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Code 1 2 3 4 5 6 7 8 9 O N D

1N4448W

Document number: DS12002 Rev. 21 - 2

T5

YM

www.diodes.com

T5 = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: B = 2014)
M = Month (ex: 9 = September)

1 of 4

April 2014

© Diodes Incorporated

)

(BR)

P

P

O

R D

PATIO

N

Maximum Ratings (@T

= +25°C, unless otherwise specified.)

A

Characteristic Symbol Value Unit

Non-Repetitive Peak Reverse Voltage

Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage

RMS Reverse Voltage
Forward Continuous Current
Average Rectified Output Current
Non-Repetitive Peak Forward Surge Current @t = 1.0μs

@t = 1.0s

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 5)
Thermal Resistance Junction to Ambient Air (Note 5)
Operating and Storage Temperature Range

V

T

V

RM

V

RRM

V

RWM

V

R

R(RMS

I

FM

I

O

I

FSM

P

D

R

θJA

, T

J

STG

1N4448W

100 V

75 V

53 V
500 mA
250 mA

4.0

1.0

A

400 mW
315 °C/W

-65 to +150 °C

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Characteristic Symbol Min Max Unit Test Condition

Reverse Breakdown Voltage (Note 6)

Forward Voltage

Peak Reverse Current (Note 6)

Total Capacitance

Reverse Recovery Time

Notes: 5. Part mounted on FR-4 PC board with 1 inch by 1 inch pad layout.

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

500

400

R = 315°C/W

θ

JA

(mW)

300

ISSI

200

WE

,

D

100

V

R

V

FM

I

⎯

RM

C

T

t

⎯

rr

75

0.62

⎯
⎯
⎯

⎯

0.72

0.855

1.0

1.25

2.5
50
30
25

⎯

4.0 pF

4.0 ns

V

V

μA
μA
μA

nA

IR = 10μA

= 5.0mA

I

F

I

= 10mA

F

= 100mA

I

F

I

= 150mA

F

= 75V

V

R

= 75V, TJ = +150°C

V

R

V

= 25V, TJ = +150°C

R

= 20V

V

R

VR = 0, f = 1.0MHz

= IR = 10mA,

I

F

I

= 0.1 x IR, RL = 100Ω

rr

1000

100

T = 150°C

A

T = 125°C

A

10

T = 85°C

A

T = 25°C

A

1

T = -55°C

A

0

0 25 50 75 100 125 150

T , AMBIENT TEMPERATURE ( C)

A

Fig. 1 Power Derati ng Curve

1N4448W

Document number: DS12002 Rev. 21 - 2

°

2 of 4

www.diodes.com

F

0.1

I , INSTANTANEOUS FORWARD CURRENT (mA)

0 200 400 600 800 1000 1200 1400 1600

V , INSTANTANEOUS FORWARD VOLTAGE (mV)

F

Figure 2 Typical Forward Characteristics

April 2014

© Diodes Incorporated

C, TOT

C

P

C

T

C

R

R

REC

OVER

Y TIM

1N4448W

5

T = 100CA°

T = 75CA°

T = 50CA°

T = 25CA°

T = -30CA°

T = 0CA°

40 60 80

4

3

E (pF)

AN
I

A

2

A

AL

1

T

0

0432

16

V , DC REVERSE VOLTAGE (V)

R

Fig. 4 Total Capacitance vs. Reverse Voltage

10.0

1.0

0.10

0.01

R

I , INSTANTANEOUS REVERSE CURRENT (µA)

0.001
0

V , INSTANTANEOUS REVERSE VOLTAGE (V)

R

20

Fig. 3 Typical Reverse Characteristics

2.5

2.0

E (nS)

1.5

1.0

SE

EVE

0.5

rr

t,

0

0468210

I , FORWARD CURRENT (mA)

F

Fig. 5 Reverse Recovery Time vs. Forward Current

Package Outline Dimensions

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

1N4448W

Document number: DS12002 Rev. 21 - 2

B

M

C
H

SOD123

Dim Min Max

A

A 0.55 Typ
B 1.40 1.70
C 3.55 3.85
H 2.55 2.85
J 0.00 0.10

K

L

K 1.00 1.35
L 0.25 0.40

M 0.10 0.15

α

0 8°

All Dimensions in mm

3 of 4

www.diodes.com

April 2014

© Diodes Incorporated

1N4448W

Suggested Pad Layout

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

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.

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

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 © 2014, Diodes Incorporated

www.diodes.com

Y

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

X1

X

Dimensions Value (in mm)

G 2.250
X 0.900

X1 4.050

Y 0.950

G

IMPORTANT NOTICE

LIFE SUPPORT

1N4448W

Document number: DS12002 Rev. 21 - 2

4 of 4

www.diodes.com

April 2014

© Diodes Incorporated