Diodes 1N4448WSF User Manual
Features
• Fast Switching Speed: trr ≤ 4.0ns
• Low Leakage Current: I
• Low Capacitance: C
• Flat Lead for High Thermal Efficiency
• Small Surface Mount Package
• Lead, Halogen and Antimony Free, RoHS Compliant (Note 1)
• "Green" Device (Note 2)
• Qualified to AEC-Q101 Standards for High Reliability
NEW PRODUCT
R
≤ 4pF
T
≤ 25nA
SOD323F
Top View
1N4448WSF
SURFACE MOUNT FAST SWITCHING DIODE
Mechanical Data
• Case: SOD323F
• Case Material: Molded Plastic, “Green Molding Compound”.
UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminal Connections: Cathode Band
• Terminals: Finish - Matte Tin annealed over Copper Alloy
leadframe. Solderable per MIL-STD-202, Method 208
• Weight: 0.007 grams (approximate)
Ordering 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
Date Code Key
Year 2011 2012 2013 2014 2015 2016 2017 2018
Code Y Z A B C D E F
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
TK
YM
TK = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: Y = 2011)
M = Month (ex: 9 = September)
1N4448WSF
Document number: DS35380 Rev. 3 - 2
1 of 4
www.diodes.com
August 2011
© Diodes Incorporated
)
θ
(BR)
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 4)
NEW PRODUCT
Thermal Resistance Junction to Ambient Air (Note 4)
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
JA
, T
J
STG
1N4448WSF
100 V
75 V
53 V
500 mA
250 mA
4
0.5
A
400 mW
313
-65 to +150
°C/W
°C
Electrical Characteristics @T
= 25°C unless otherwise specified
A
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5)
Forward Voltage
Leakage Current (Note 5)
Total Capacitance
Reverse Recovery Time
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.
V
V
F
I
R
C
⎯
T
t
⎯
rr
75
R
0.62 0.72
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
0.855
1.0
V
V
1.25
2.5
50
30
μA
μA
μA
25 nA
4.0 pF
4.0 ns
IR = 100μA
= 5.0mA
I
F
IF = 10mA
IF = 100mA
IF = 150mA
= 75V
V
R
= 75V, TJ = 150°C
V
R
= 25V, TJ = 150°C
V
R
VR = 20V
VR = 0, f = 1.0MHz
= IR = 10mA,
I
F
= 0.1 x IR, RL = 100Ω
I
rr
1N4448WSF
Document number: DS35380 Rev. 3 - 2
2 of 4
www.diodes.com
August 2011
© Diodes Incorporated
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