1N4448HWT
Document number: DS30395 Rev. 8 - 2 1 of 4
www.diodes.com July 2009
© Diodes Incorporated
1N4448HWT
SURFACE MOUNT FAST SWITCHING DIODE
Features
• Fast Switching Speed
• Ultra-Small Surface Mount Package
• For General Purpose Switching Applications
• High Conductance
• Lead Free by Design/RoHS Compliant (Note 1)
• "Green" Device (Notes 3 and 4)
Mechanical Data
• Case: SOD-523
• Case Material: Molded Plastic, "Green" Molding Compound,
Note 4. UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020D
• Terminal Connections: Cathode Band
• Terminals: Solderable per MIL-STD-202, Method 208
• Lead Free Plating (Matte Tin Finish) annealed over Alloy 42
leadframe.
• Marking Information: See Page 2
• Ordering Information: See Page 2
• Weight: 0.002 grams (approximate)
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 80 V
RMS Reverse Voltage VR
(
RMS
)
57 V
Forward Continuous Current IFM 250 mA
Average Rectified Output Current IO 125 mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0
μ
s
@ t = 1.0s IFSM 2.0
1.0 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 2) PD 150 mW
Thermal Resistance Junction to Ambient (Note 2) R
θ
JA 833 °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 Conditions
Reverse Breakdown Voltage (Note 5) V
(
BR
)
R 80 ⎯ V IR = 100μA
Forward Voltage VF
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) IR ⎯
100
50
30
25
nA
μA
μA
nA
VR = 80V
VR = 75V, TJ = 150°C
VR = 25V, TJ = 150°C
VR = 20V
Total Capacitance CT ⎯ 3.0 pF VR = 0.5V, f = 1.0MHz
Reverse Recovery Time trr ⎯ 4.0 ns IF = IR = 10mA,
Irr = 0.1 x IR, RL = 100Ω
Notes: 1. No purposefully added lead.
2. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
3. Diode's Inc.'s "Green" Policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
4. Product manufactured with date code 0627 (week 27, 2006) and newer are built with Green Molding Compound. Product manufactured prior to date
code 0627 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
5. Short duration pulse test used to minimize self-heating effect.
TOP VIEW
SOD-523
1N4448HWT
Document number: DS30395 Rev. 8 - 2 2 of 4
www.diodes.com July 2009
© Diodes Incorporated
1N4448HWT
0
50
02550 75 100 125
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N
(mW)
D
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Power Derating Curve
A
°
100
200
150
150
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 FORW ARD VOLT AGE (mV)
Fig. 2 Typical Forward Characteristics
F
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 , INSTANT ANEOUS REVERSE CURRENT ( A)
R
μ
0468210
I , FORWARD CURRENT (mA)
Fig. 4 Reverse Recovery T im e 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
Ordering Information (Notes 4 & 6)
Part Number Case Packaging
1N4448HWT-7 (Note 7) SOD-523 3000/Tape & Reel
Notes: 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
7. Dispensed in every other cavity of the tape.
Marking Information
T8 = Product Type Marking Code
T8
Cat h ode Ba nd
1N4448HWT
Document number: DS30395 Rev. 8 - 2 3 of 4
www.diodes.com July 2009
© Diodes Incorporated
1N4448HWT
Package Outline Dimensions
Suggested Pad Layout
SOD-523
Dim Min Max
A 0.25 0.35
B 0.70 0.90
C 1.50 1.70
H 1.10 1.30
K 0.55 0.65
L 0.10 0.30
M 0.10 0.12
All Dimensions in mm
Dimensions Value (in mm)
Z 2.3
G 1.1
X 0.8
Y 0.6
C 1.7
H
C
A
BK
M
L
Z
X
C
G
Y
1N4448HWT
Document number: DS30395 Rev. 8 - 2 4 of 4
www.diodes.com July 2009
© Diodes Incorporated
1N4448HWT
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.
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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 © 2009, Diodes Incorporated
www.diodes.com
