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
MECHANICAL DATA
* Case: Molded plastic
* Epoxy: UL 94V-O rate flame retardant
* Lead: MIL-STD-202E method 208C guaranteed
* Mounting position: Any
* Weight: 0.004 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25OC ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
1N4448WS
SOD-323
MAXIMUM RATINGS (@TA=25OC unless otherwise noted)
ELECTRICAL CHARACTERISTICS
(@TA=25OC unless otherwise noted)
Dimensions in inches and (millimeters)
VC 2008-02
RATINGS
Non-Repetitive Peak Reverse Voltage
Maximum DC Blocking Voltage
Maximum RMS Voltage
Maximum Forward Comtinuous Current
Non-Repetitive Peak Forward Surge Current
Maximum Power Dissipation
Operating and Storage Temperature Range
SYMBOL 1N4448WS
VRM
VRMS
IFM
IFSM
PD
TJ,TSTG
VR
Volts
Volts
mAmps500
Maximum Average Forward Rectified Current IOmAmps250
4.0
2.0
200
Typical Junction Capacitance CJ4
-65 to + 150
Amps
mW
pF
Typical Reverse Recovery Time Trr 4 nS
OC
UNITS
Typical Thermal Resistance RqJA 315 OC/W
100
Maximum Working Peak reverse Voltage VRWM Volts75
Maximum Repetitive Peak Reverse Voltage VRRM
53
CHARACTERISTICS
Maximum Instantaneous Peverse Current
NOTE : "Fully ROHS Compliant", "100% Sn plating (Pb-free)".
VF
SYMBOL
IR
UNITS
Maximum Instantaneous Forward Voltage
Volts
@IF=1.0mA
@VR=20V
@VR=75V
@IF=10mA
@t=1.0uS
@t=1.0S
@IF=50mA
@IF=150mA
0.715
1.25
2.5
0.855
1.0
25 nAmps
uAmps
1N4448WS
REF .019(0.475)
.014(.350)
.010(.250)
.106(2.700)
.098(2.500)
.055(1.400)
.047(1.200)
.071(1.800)
.063(1.600)
.006(.150)
.003(.080)
MAX.039(1.000)
.004(.100)
.000(.000)
RATING AND CHARACTERISTICS CURVES ( 1N4448WS )
Figure.2 Typical Forward Chatacteristics
Figure.4 Reverse Recovery Time vs Forward Current
VF, FORWARD VOLTAGE (mV)
Figure.1 Power Derating Curve
TA, AMBIENT TEMPERATURE (
O
C)
IF, FORWARD CURRENT (mA)
Figure.3 Typical Reverse Characteristics
VR, REVERSE VOLTAGE (V)
IF, FORWARD CURRENT (mA)
Pd, POWER DISSIPATION (mW) IR, LEAKAGE CURRENT (A)
trr, REVERSE RECOVERY TIME(nS)
00
100
300
25 50 75 100 125 150
200
10
100
1
0.1
0 1000
800
200 400 600
0.10
1.0
10.0
0.01
0.001 020 40 60 80
0
68
2104
0
0.5
1.0
1.5
2.0
2.5
Figure.5 Total Capacicance vs Reverse Voltage
IF, FORWARD CURRENT (mA)
CT, TOTAL CAPCITANCE (pF)
0 4
3
25
16
0
1
2
3
4
Ta=25
O
C
Ta=50
O
C
Ta=85
O
C
Ta=100
O
C
Ta=75
O
C
Ta=50
O
C
Ta=25
O
C
Ta=-30
O
C
f=1 MHz
Ta=0
O
C
Ta=0
O
C
Ta=30
O
C
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