MCC
omponents
20736 Marilla Street Chatsworth
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TM
Micro Commercial Components
MMBD4448
Features
Surface Mount
Fast Switching Speed
Surface Mount Package Ideally Suited for Automatic Insertion
For General Purpose Switching Applications
Switching Diode
350mW
Lead Free Finish/Rohs Compliant ("P"Suffix designates
RoHS Compliant. See ordering information)
Mechanical Data
Epoxy meets UL 94 V-0 flammability rating
Moisture Sensitivity Level 1
SOT-23
Polarity: See Diagram
A
D
Marking: KA3
C
B
Maximum Ratings @ 25oC Unless Otherwise Specified
Characteristic
Symbol
Value
Unit
Non-Repetitive Peak Reverse Volt.
VRM
100
V
Peak Repetitive Reverse Voltage
VRRM
Working Peak Reverse Voltage
VRWM
75
V
DC Blocking Voltage
VR
RMS Reverse Voltage
VR(RMS)
53
V
Forward Continuous Current(Note1)
IFM
500
mA
Average Rectified Output Current
Io
250
mA
Non-Repetitive Peak @ t<=1.0s
IFSM
2
A
4
A
Forward Surge Current @ t=1.0us
Power Dissipation(Note 1)
Pd
350
mW
Thermal Resistance(Note 1)
R
357
K/W
Operation/Storage Temp. Range
Tj, TSTG
-55 to +150
o
F
Maximum Forward
Symbol
VF M
Min
Max
0.62
0.72
-----
0.855
Voltage Drop
Maximum Peak
IRM
-----
DIM
A
B
C
D
E
F
G
H
J
K
INCHES
MIN
.110
.083
.047
.035
.070
.018
.0005
.035
.003
.015
IF =100mA
IF =150mA
uA
MM
MIN
2.80
2.10
1.20
.89
1.78
.45
.013
.89
.085
.37
MAX
3.04
2.64
1.40
1.03
2.05
.60
.100
1.12
.180
.51
NOTE
.031
.800
IF =10mA
1
MAX
.120
.098
.055
.041
.081
.024
.0039
.044
.007
.020
Suggested Solder
Pad Layout
Test Cond.
IF =5.0mA
V
J
DIMENSIONS
C
1.25
2.5
Reverse Current
Unit
H
G
Electrical Characteristics @ 25oC Unless Otherwise Specified
Charateristic
E
.035
.900
.079
2.000
V R =75V
inches
mm
o
50
uA
VR =75V Tj=150 C
30
uA
VR =25V Tj=150 C
o
25
nA
V R =20V
Junction Capacitance
Cj
-----
4
pF
V R =0V, f=1.0MHz
Reverse Recovery Time
trr
-----
4
ns
.037
.950
.037
.950
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
Revision: A
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1 of 4
2011/01/01
MCC
MMBD4448
Figure 1
Typical Forward Characteristics
Micro Commercial Components
200
Figure 2
Forward Derating Curve
100
420
60
40
350
20
280
MilliAmps 10
6
210
MilliWatts
4
140
2
25°C
70
1
Single Phase, Half Wave
60Hz Resistive or Inductive Load
.6
0
.4
0
50
75
100
125
150
175
°C
.2
.1
.4
.6
.8
1.0
1.2
Admissable Power Dissipation - MilliWattsversus
Ambient Temperature - °C
1.4
Volts
Instantaneous Forward Current - Amperesversus
Instantaneous Forward Voltage - Volts
Figure 3
Junction Capacitance
10
6
4
2
pF
TJ=25°C
1
.6
.4
.2
.1
.1
.2
.4
1
Volts
2
4
10
20
40
100
200
400
1000
Junction Capacitance - pFversus
Reverse Voltage - Volts
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Revision: A
2 of 4
2011/01/01
TM
MCC
MMBD4448
Figure 4
Typical Reverse Characteristics
Micro Commercial Components
Figure 5
Peak Forward Surge Current
1000
2.4
600
400
2.0
200
1.6
100
1.2
60
Amps
40
0.8
0.4
20
0
10
NanoAmps
6
1
2
4
6
8 10
20
40
60 80 100
Cycles
4
Peak Forward Surge Current - Amperesversus
Number Of Cycles At 60Hz - Cycles
2
1
TA=25°C
.6
.4
.2
.1
20
40
60
80
100
120
140
TJ
Instantaneous Reverse Leakage Current - NanoAmperesversus
Junction Temperature - °C
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Revision: A
3 of 4
2011/01/01
TM
MCC
TM
Micro Commercial Components
Ordering Information :
Device
Packing
Part Number-TP
Tape&Reel: 3Kpcs/Reel
***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.
***LIFE SUPPORT***
MCC's products are not authorized for use as critical components in life support devices or systems without the express written
approval of Micro Commercial Components Corporation.
***CUSTOMER AWARENESS***
Counterfeiting of semiconductor parts is a growing problem in the industry. Micro Commercial Components (MCC) is taking
strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. MCC strongly encourages
customers to purchase MCC parts either directly from MCC or from Authorized MCC Distributors who are listed by country on
our web page cited below. Products customers buy either from MCC directly or from Authorized MCC Distributors are genuine
parts, have full traceability, meet MCC's quality standards for handling and storage. MCC will not provide any warranty
coverage or other assistance for parts bought from Unauthorized Sources. MCC is committed to combat this global
problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized
distributors.
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Revision: A
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2011/01/01