1N4448W
Document number: DS12002 Rev. 18 - 2 1 of 4
www.diodes.com November 2010
© Diodes Incorporated
1N4448W
FAST SWITCHING SURFACE MOUNT DIODE
Features
Fast Switching Speed
Surface Mount Package Ideally Suited for Automated Insertion
For General Purpose Switching Applications
High Conductance
Lead, Halogen and Antimony Free, RoHS Compliant "Green"
Device (Notes 1 and 2)
Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
Case: SOD-123
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)
Ordering Information (Note 3)
Part Number Case Packaging
1N4448W-7-F SOD-123 3000/Tape & Reel
Notes: 1. No purposefully added lead. Halogen and Antimony Free.
2. Product manufactured with Data Code V9 (week 33, 2008) and newer are built with Green Molding Compound. Product manufactured prior to Date Code
V9 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
3. For packaging details, go to our website at http://www.diodes.com.
Marking Information
Date Code Key
Year 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Code J K L M N P R S T U V W X Y Z A B C
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
Top View
SOD-123
T5 = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)
T5
YM
1N4448W
Document number: DS12002 Rev. 18 - 2 2 of 4
www.diodes.com November 2010
© Diodes Incorporated
1N4448W
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Non-Repetitive Peak Reverse Voltage VRM 100 V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
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 @ t = 1.0
μ
s
@ t = 1.0s IFSM 4.0
1.0 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4) PD 400 mW
Thermal Resistance Junction to Ambient Air (Note 4) R
θ
JA 315 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5) V
(
BR
)
R 75 V IR = 10μA
Forward Voltage VFM
0.62
0.72
0.855
1.0
1.25
V
IF = 5.0mA
IF = 10mA
IF = 100mA
IF = 150mA
Peak Reverse Current (Note 5) IRM
2.5
50
30
25
μA
μA
μA
nA
VR = 75V
VR = 75V, TJ = 150°C
VR = 25V, TJ = 150°C
VR = 20V
Total Capacitance CT 4.0 pF
VR = 0, f = 1.0MHz
Reverse Recovery Time trr 4.0 ns
IF = IR = 10mA,
Irr = 0.1 x IR, RL = 100Ω
Notes: 4. Part mounted on FR-4 PC board with minimum recommended pad layout, which can be found on our website at http://www.diodes.com.
5. Short duration pulse test used to minimize self-heating effect.
0 25 50 75 100 125 150
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Power Derating Curve
A
°
0
200
400
500
100
300
R = 315°C/W
θ
JA
10
100
1
0.101,000
800
200 400 600
I , INS
T
AN
T
ANE
O
U
S
F
O
R
WA
R
D
C
U
R
R
EN
T
(mA)
F
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
Fig. 2 Typical Forward Characteristics
F
1N4448W
Document number: DS12002 Rev. 18 - 2 3 of 4
www.diodes.com November 2010
© Diodes Incorporated
1N4448W
0.10
1.0
10.0
0.01
0.001020 40 60 80
V , INSTANT ANEOUS REVERSE VOLTAGE (V)
Fig. 3 Typical Reverse Characteristics
R
T = 100 C
A
°
T = 0C
A
°
T = 75C
A
°
T = 50C
A
°
T = 25C
A
°
T = -30C
A
°
I , INSTANTANEOUS REVERSE CURRENT (µA)
R
0432 5
16
V , DC REVERSE VOLTAGE (V)
Fig. 4 Total Capacitance vs. Reverse Voltage
R
C
,
T
O
T
AL
C
A
P
A
C
I
T
AN
C
E (pF)
T
0
1
2
3
4
0 468210
I , FORWARD CURRENT (mA)
Fig. 5 Reverse Recovery Ti me vs. Forward Current
F
t,
R
EVE
R
SE
R
E
C
O
VE
R
Y
T
IME (nS)
rr
0
0.5
1.0
1.5
2.0
2.5
Package Outline Dimensions
SOD-123
Dim Min Max
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 1.00 1.35
L 0.25 0.40
M 0.10 0.15
α 0 8°
All Dimensions in mm
K
L
M
C
H
BA
1N4448W
Document number: DS12002 Rev. 18 - 2 4 of 4
www.diodes.com November 2010
© Diodes Incorporated
1N4448W
Suggested Pad Layout
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).
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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.
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indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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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 pro ducts and an y
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 © 2010, Diodes Incorporated
www.diodes.com
Dimensions Value (in mm)
Z 4.9
G 2.5
X 0.7
Y 1.2
C 3.7
Z
X
C
G
Y