MCC
Micro Commercial Components
TM
omponents
20736 Marilla Street Chatsworth
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MMBD4448WT
Features
Fast Switching Speed
Surface Mount Package Ideally Suited for Automatic Insertion
For General Purpose Switching Applications
High Conductance
Surface Mount
Switching Diode
200mW
SOT-323
A
D
Mechanical Data
Case Material: Molded Plastic. UL Flammability
Classification Rating 94V-0
Polarity: See Diagram
Marking: KA3
F
E
B
C
Maximum Ratings @ 25
o
C Unless Otherwise Specified
Characteristic
Non-Repetitive Peak Reverse Volt.
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Forward Continuous Current(Note1)
Average Rectified Output Current
Non-Repetitive Peak @ t<=1.0s
Forward Surge Current @ t=1.0us
Power Dissipation(Note 1)
Thermal Resistance(Note 1)
Operation/Storage Temp. Range
Pd
Rthja
Tj, T
STG
Symbol
V
RM
V
RRM
V
RWM
V
R
V
R(RMS)
I
FM
Io
I
FSM
53
500
250
2
4
200
625
-55 to +150
V
mA
mA
A
A
mW
K/W
o
Value
100
75
Unit
V
V
G
H
J
K
DIMENSIONS
INCHES
MIN
MAX
.079
.087
.045
.053
.085
.096
.026 Nominal
.047
.055
.012
.016
.000
.004
.035
.039
.003
.006
.008
.016
MM
MIN
MAX
2.00
2.20
1.15
1.35
2.15
2.45
0.65Nominal
1.20
1.40
.30
.40
.000
.100
.90
1.00
.08
.15
.20
.40
DIM
A
B
C
D
E
F
G
H
J
K
NOTE
C
Electrical Characteristics @ 25
o
C Unless Otherwise Specified
Charateristic
Maximum Forward
Voltage Drop
Symbol
V
F M
Min
0.62
-----
Max
0.72
0.855
1
1.25
2.5
Maximum Peak
Reverse Current
Junction Capacitance
Reverse Recovery Time
Cj
t
rr
-----
-----
I
RM
-----
50
30
25
4
4
uA
uA
uA
nA
pF
ns
V
Unit
Test Cond.
I
F
=5.0mA
I
F
=10mA
I
F
=100mA
I
F
=150mA
V
R
=75V
V
R
=75V Tj=150 C
V
R
=25V Tj=150 C
V
R
=20V
V
R
=0V, f=1.0MHz
o
o
Suggested Solder
Pad Layout
0.70
0.90
1.90
0.65
0.65
Note
: 1. Valid provided that terminals are kept at ambient temperature
2. Trr Test Condition: IF=IR=10mA, Irr=0.1*IR, R=100 OHM
www.mccsemi.com
Revision: 4
1 of 4
2007/09/26
MMBD4448WT
Figure 1
Typical Forward Characteristics
MCC
Micro Commercial Components
Figure 2
Forward Derating Curve
300
250
TM
1000
, INSTANTANEOUS FORWARD CURRENT (mA)
100
200
10
T
A
= -40ºC
T
A
= 0ºC
150
MilliWatts
100
1
T
A
= 25ºC
50
T
A
= 75ºC
T
A
= 125ºC
Single Phase, Half Wave
60Hz Resistive or Inductive Load
0
50
75
100
°C
Admissable Power Dissipation - MilliWattsversus
Ambient Temperature -
°C
125
150
175
0
F
I
0.1
0
0.4
0.8
1.2
1.6
V
F
, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 1 Typical Forward Characteristics
Figure 3
Junction Capacitance
10
6
4
2
pF
1
.6
.4
.2
.1
.1
.2
.4
1
Volts
2
4
10
20
40
100
200
400
1000
T
J
=25°C
Junction Capacitance - pF
versus
Reverse Voltage - Volts
www.mccsemi.com
Revision: 4
2 of 4
2007/09/26
MMBD4448WT
Figure 4
Typical Reverse Characteristics
1000
600
400
200
100
60
40
20
10
NanoAmps
6
4
2
1
.6
.4
.2
.1
20
40
60
T
J
Instantaneous Reverse Leakage Current - NanoAmperes
versus
Junction Temperature -
°C
80
100
120
140
T
A
=25°C
Amps
2.4
2.0
1.6
1.2
0.8
0.4
0
1
4
6
MCC
Micro Commercial Components
Figure 5
Peak Forward Surge Current
TM
2
8 10
Cycles
20
40
60 80 100
Peak Forward Surge Current - Amperes
versus
Number Of Cycles At 60Hz - Cycles
www.mccsemi.com
Revision: 4
3 of 4
2007/09/26
MCC
Micro Commercial Components
TM
***IMPORTANT NOTICE***
Micro Commercial Components Corp
.
reserves the right to make changes without further notice to any
product herein to make corrections, modifications , enhancements , improvements , or other changes .
Micro Commercial Components Corp
.
does not assume any liability arising out of the application or
use of any product described herein; neither does it convey any license under its patent rights ,nor
the rights of others . The user of products in such applications shall assume all risks of such use
and will agree to hold
Micro Commercial Components Corp
.
and all the companies whose
products are represented on our website, harmless against all damages.
***APPLICATIONS DISCLAIMER***
Products offer by
Micro Commercial Components Corp
.
are not intended for use in Medical,
Aerospace or Military Applications.
www.mccsemi.com
Revision: 4
4 of 4
2007/09/26
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