1N4448WS
SMALL SIGNAL DIODE
VOLTAGE RANGE 75 Volts CURRENT 250 mAmpere
FEATURES
* Fast Switching Speed
* Surface Mount Package Ideally Suited for
Automatic Insertion
* For General Purpose Switching Applicationgs
* High Conductance
SOD-323
MECHANICAL DATA
*
*
*
*
*
.014(.350)
.010(.250)
Case: Molded plastic
Epoxy: UL 94V-O rate flame retardant
Lead: MIL-STD-202E method 208C guaranteed
Mounting position: Any
Weight: 0.004 grams
.071(1.800)
.063(1.600)
.055(1.400)
.047(1.200)
.106(2.700)
.098(2.500)
.006(.150)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
O
.003(.080)
MAX.039(1.000)
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
REF .019(0.475)
.004(.100)
.000(.000)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS
(@T
A
=25
O
C unless otherwise noted)
RATINGS
Non-Repetitive Peak Reverse Voltage
Maximum Repetitive Peak Reverse Voltage
Maximum Working Peak reverse Voltage
Maximum DC Blocking Voltage
Maximum RMS Voltage
Maximum Forward Comtinuous Current
Maximum Average Forward Rectified Current
Non-Repetitive Peak Forward Surge Current
Typical Reverse Recovery Time
Typical Junction Capacitance
Maximum Power Dissipation
Typical Thermal Resistance
Operating and Storage Temperature Range
SYMBOL
V
RM
V
RRM
V
RWM
V
R
V
RMS
I
FM
I
O
I
FSM
T
rr
C
J
P
D
R
qJA
T
J
,T
STG
1N4448WS
100
75
53
500
250
4.0
2.0
UNITS
Volts
Volts
Volts
mAmps
mAmps
Amps
nS
pF
mW
O
@t=1.0uS
@t=1.0S
4
4
200
315
-65 to + 150
1N4448WS
0.715
0.855
1.0
1.25
25
2.5
C/W
O
C
ELECTRICAL CHARACTERISTICS
(@T
A
=25
O
C unless otherwise noted)
SYMBOL
CHARACTERISTICS
Maximum Instantaneous Forward Voltage
@IF=1.0mA
@IF=10mA
@IF=50mA
@IF=150mA
@VR=20V
@VR=75V
UNITS
Volts
nAmps
uAmps
V
F
Maximum Instantaneous Peverse Current
I
R
NOTE : "Fully ROHS Compliant", "100% Sn plating (Pb-free)".
VC 2008-02
RATING AND CHARACTERISTICS CURVES ( 1N4448WS )
300
Pd, POWER DISSIPATION (mW)
IF, FORWARD CURRENT (mA)
100
200
10
Ta=25 C
O
Ta=50 C
O
100
1
Ta=85
O
C
Ta=0
O
C
Ta=30 C
O
0
0
25
50
75
100
125
150
0.1
0
200
400
600
800
1000
Figure.1 Power Derating Curve
10.0
TA, AMBIENT TEMPERATURE (
O
C)
Figure.2 Typical Forward Chatacteristics
2.5
trr, REVERSE RECOVERY TIME(nS)
2.0
1.5
1.0
0.5
0
VF, FORWARD VOLTAGE (mV)
IR, LEAKAGE CURRENT (A)
1.0
Ta=100
O
C
Ta=75
O
C
0.10
Ta=50
O
C
Ta=25
O
C
0.01
Ta=-30 C
O
Ta=0
O
C
0.001
0
20
40
60
80
Figure.3 Typical Reverse Characteristics
4
CT, TOTAL CAPCITANCE (pF)
VR, REVERSE VOLTAGE (V)
0
2
Figure.4 Reverse Recovery Time vs Forward Current
f=1 MHz
IF, FORWARD CURRENT (mA)
4
6
8
10
3
2
1
0
0
1
2
3
4
5
6
Figure.5 Total Capacicance vs Reverse Voltage
IF, FORWARD CURRENT (mA)
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
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