1N4448WS
Document number: DS30096 Rev. 11 - 2 1 of 4
www.diodes.com February 2010
© Diodes Incorporated
1N4448WS
SURFACE MOUNT FAST SWITCHING DIODE
Features
• Fast Switching Speed
• Small Surface Mount Package
• For General Purpose Switching Applications
• High Conductance
• Lead, Halogen and Antimony Free, RoHS Compliant (Note 3)
• "Green" Device (Note 4)
• Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
• Case: SOD-323
• Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Leads: Matte Tin Finish annealed over Alloy 42 leadframe (Lead
Free Plating). Solderable per MIL-STD-202, Method 208
• Polarity: Cathode Band
• Marking Information: See Page 3
• Ordering Information: See Page 3
• Weight: 0.004 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 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
0.5 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 2) PD 200 mW
Thermal Resistance Junction to Ambient Air (Note 2) R
θ
JA 625 °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 1) V
(
BR
)
R 75 ⎯ V IR = 2.5μA
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 1) 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: 1. Short duration pulse test used to minimize self-heating.
2. Part mounted on FR-4 PC board with minimum recommended pad layouts, which can be found on our website at
http://www/diodes.com/datasheets/ap02001.pdf.
3. No purposefully added lead. Halogen and Antimony Free.
4. 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.
Top View
SOD-323
1N4448WS
Document number: DS30096 Rev. 11 - 2 2 of 4
www.diodes.com February 2010
© Diodes Incorporated
1N4448WS
0
100
300
02550 75 100 125 150
P
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
,
T , AMBIENT TEMPERA TURE ( C)
Fig. 1 Forward Current Derating Curve
A
°
200
Note 2
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
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( A)
R
μ
04
3
25
16
V , DC REVERSE VOL TAGE (V)
Fig . 4 Tot al Capac itance vs . Reverse Voltage
R
C
,
T
O
T
AL
C
A
P
A
C
I
T
A
N
C
E (pF)
T
0
1
2
3
4
0468210
I , FORWARD CURRENT (mA)
Fig. 5 Reverse Recovery Time 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
1N4448WS
Document number: DS30096 Rev. 11 - 2 3 of 4
www.diodes.com February 2010
© Diodes Incorporated
1N4448WS
Ordering Information (Note 5)
Part Number Case Packaging
1N4448WS-7-F SOD-323 3000/Tape & Reel
Notes: 5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
Package Outline Dimensions
Suggested Pad Layout
SOD-323
Dim Min Max
A 0.25 0.35
B 1.20 1.40
C 2.30 2.70
H 1.60 1.80
J 0.00 0.10
K 1.0 1.1
L 0.20 0.40
M 0.10 0.15
α 0° 8°
All Dimensions in mm
Dimensions Value (in mm)
Z 3.75
G 1.05
X 0.65
Y 1.35
C 2.40
T5 = Product Type Marking Code
T5
Cat hode Band
Z
X
C
G
Y
K
L
MJ
C
H
BA
1N4448WS
Document number: DS30096 Rev. 11 - 2 4 of 4
www.diodes.com February 2010
© Diodes Incorporated
1N4448WS
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