DS30096 Rev. 4 - 2
1 of 3
1N4448WS
1N4448WS
SURFACE MOUNT FAST SWITCHING DIODE
Features
Case: SOD-323, Plastic
Case material - UL Flammability Rating
Classification 94V-0
Moisture Sensitivity: Level 1 per J-STD-020A
Polarity: Cathode Band
Leads: Solderable per MIL-STD-202,
Method 208
Marking: T5
Weight: 0.004 grams (approx.)
Mechanical Data
A
B
C
D
E
G
a
H
J
Characteristic
Symbol
1N4448WS
Unit
Non-Repetitive Peak Reverse Voltage
V
RM
100
V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
75
V
RMS Reverse Voltage
V
R(RMS)
53
V
Forward Continuous Current
I
FM
500
mA
Average Rectified Output Current
I
O
250
mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0
ms
@ t = 1.0s
I
FSM
4.0
2.0
A
Power Dissipation (Note 2)
P
d
200
mW
Thermal Resistance Junction to Ambient Air (Note 2)
R
qJA
625
C/W
Operating and Storage Temperature Range
T
j
, T
STG
-65 to +150
C
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
Notes:
1. Short duration test pulse 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.
Characteristic
Symbol
Min
Max
Unit
Test Condition
Reverse Breakdown Voltage (Note 1)
V
(BR)R
75
V
I
R
= 2.5
mA
Forward Voltage (Note 1)
V
FM
0.62
0.72
0.855
1.0
1.25
V
I
F
= 5.0mA
I
F
= 10mA
I
F
= 100mA
I
F
= 150mA
Peak Reverse Current (Note 1)
I
RM
2.5
50
30
25
mA
mA
mA
nA
V
R
= 75V
V
R
= 75V, T
j
= 150
C
V
R
= 25V, T
j
= 150
C
V
R
= 20V
Total Capacitance
C
T
4.0
pF
V
R
= 0, f = 1.0MHz
Reverse Recovery Time
t
rr
4.0
ns
I
F
= I
R
= 10mA,
I
rr
= 0.1 x I
R
, R
L
= 100
W
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Fast Switching Speed
Ultra-Small Surface Mount Package
For General Purpose Switching Applications
High Conductance
SOD-323
Dim
Min
Max
A
2.30
2.70
B
1.60
1.80
C
1.20
1.40
D
1.05 Typical
E
0.25
0.35
G
0.20
0.40
H
0.10
0.15
J
0.05 Typical
a
0
8
All Dimensions in mm
DS30096 Rev. 4 - 2
2 of 3
1N4448WS
0
100
300
0
25
50
75
125
125
150
PP
O
WER
DISSIP
AT
I
O
N
(mW)
d
,
AMBIENT TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
200
10
100
1
0.1
0
1000
800
200
400
600
I,
F
O
R
W
ARD
CURRENT
(mA)
F
V , FORWARD VOLTAGE (mV)
Fig. 2 Typical Forward Characteristics
F
Ta = -30 C
Ta = 50 C
Ta = 0 C
Ta = 85 C
Ta = 25 C
T5
Cathode Band
Type Code
Marking Information
Notes:
3. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Device
Packaging
Shipping
1N4448WS-7
SOD-323
3000/Tape & Reel
Ordering Information
(Note 3)
0.10
1.0
10.0
0.01
0.001
0
20
40
60
80
I
,
LEAKAGE
CURRENT
(
A)
R
V , REVERSE VOLTAGE (V)
Fig. 3 Typical Reverse Characteristics
R
Ta = 100 C
Ta = 0 C
Ta = 75 C
Ta = 50 C
Ta = 25 C
Ta = -30 C
0
4
6
8
2
10
I , FORWARD CURRENT (mA)
Fig. 4 Reverse Recovery Time vs.
Forward Current
F
t
rr
,
R
EVERSE
RECOVER
Y
TIME
(nS)
0
0.5
1.0
1.5
2.0
2.5
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