SMD Switching Diode
MMBD4448W
List
Formosa MS
List................................................................................................. 1
Package outline............................................................................... 2
Features.......................................................................................... 2
Mechanical data............................................................................... 2
Maximum ratings ............................................................................. 2
Rating and characteristic curves........................................................ 3
Pinning information........................................................................... 4
Marking........................................................................................... 4
Suggested solder pad layout............................................................. 4
Packing information.......................................................................... 5
Reel packing.................................................................................... 6
Suggested thermal profiles for soldering processes............................. 6
High reliability test capabilities........................................................... 7
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2010/03/10
Revision
B
Page.
7
Page 1
DS-221932
SMD Switching Diode
MMBD4448W
200mW Surface Mount Switching
Diode-100V
Features
•
Fast switching speed.
•
Electrically identical to standard JEDEC.
•
Surface mount package ideally suited for automatic insertion.
•
Tiny plastic SMD package.
•
High Conductance.
•
Silicon epitaxial planar chip.
•
Lead-free parts for green partner, exceeds environmental
•
standards of MIL-STD-19500 /228
Suffix "-H" indicates Halogen-free part, ex.MMBD4448W-H.
Formosa MS
Package Outline
SOT-323
0.026 (0.65)Max
0.016 (0.40)
(C)
0.088 (2.20)
0.072 (1.80)
.056(1.40)
.048(1.20)
(B)
(A)
0.054 (1.35)
0.046 (1.15)
0.017 (0.42)Min.
0.096 (2.40)
0.080 (2.00)
0.004 (0.10)
0.010(0.25)
Mechanical data
•
Epoxy:UL94-V0 rated flame retardant
•
Case : Molded plastic, SOT-323
•
Terminals : Solder plated, solderable per
MIL-STD-750, Method 2026
0.040 (1.00)
0.032 (0.80)
•
Mounting Position : Any
•
Weight : Approximated 0.006 gram
Dimensions in inches and (millimeters)
Maximum ratings and Electrical Characteristics
(AT
PARAMETER
Reverse voltage
Peak reverse voltage
RMS voltage
Maximum DC blocking voltage
Maximum average forward current at T
A
= 25 C
Peak forward surge current, 1.0us
Power Dissipation derate above 25
o
C
Maximum forward voltage
Maximum DC reverse current at rated DC blocking voltage T
J
= 25
o
C
Typical Junction capacitance (Notes 1)
Maximum reverse recovery time(Notes 2)
Typical thermal resistance junction to ambient
Operating junction temperature range
Storage temperature range
Notes :
1. C
J
at V
R
= 0V, f = 1MHZ
2. From I
F
= 10mA to I
R
= 1mA, V
R
= 6V, R
L
= 100ohm
o
T
A
=25
o
C unless otherwise noted)
Symbol
V
R
V
RM
V
RMS
V
DC
I
O
I
FSM
P
D
V
F
I
R
C
J
t
rr
R
θJA
T
J
T
STG
MMBD4448W
75
100
50
75
150
4.0
200
1.0@0.01A
0.025@20V
2.5@75V
4.0
4.0
625
-55 to +150
-55 to +150
o
0.012 (0.30)
UNIT
V
V
V
V
mA
A
mW
V
uA
pF
ns
C/W
o
C
C
o
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2010/03/10
Revision
B
Page.
7
Page 2
DS-221932
Rating and characteristic curves (MMBD4448W)
Fig. 1 TYPICAL FORWARD CHARACTERISTICS
100
10
TJ=150
O
C
Fig. 2 TYPICAL LEAKAGE CURRENT
CHARACTERISTICS
FORWARD CURRENT : (mA)
REVERSE CURRENT : (uA)
TJ=85
O
C
1.0
TJ= 125
O
C
10
0.1
TJ= 85
O
C
1.0
TJ=-40
O
C
TJ= 55
O
C
0.01
TJ=25 C
O
TJ= 25
O
C
0.1
0.2
0.4
0.6
0.8
1.0
1.2
0.001
0
10
20
30
40
50
FORWARD VOLTAGE : (V)
REVERSE VOLTAGE : (V)
Fig. 4 POWER DERATING CURVE
FIG.3-TYPICAL JUNCTION CAPACITANCE
0.68
250
DIODE CAPACITANCE (pF)
0.64
P
D
, Power Dissipation (mW)
200
150
100
50
0
0
0.60
0.56
0.52
0
2
4
6
8
REVERSE VOLTAGE : V
25
50
75
100
125
o
150
AMBIENT TEMPERATURE (
C
)
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2010/03/10
Revision
B
Page.
7
Page 3
DS-221932
SMD Switching Diode
MMBD4448W
Formosa MS
Pinning information
Type number
MMBD4448W
Marking code
KA3
(C)
Simplified outline Symbol
(A)
(B)
A
B
C
Suggested solder pad layout
SOT-323
0.025(0.65)
0.025(0.65)
0.063(1.6)
0.031(0.80)
0.075(1.90)
Dimensions in inches and (millimeters)
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2010/03/10
Revision
B
Page.
7
Page 4
DS-221932
SMD Switching Diode
MMBD4448W
Packing information
P
0
P
1
d
E
F
B
W
Formosa MS
A
P
D
2
T
C
D
W
1
D
1
unit:mm
Item
Symbol
Tolerance
SOT-323
Carrier width
Carrier length
Carrier depth
Sprocket hole
13" Reel outside diameter
13" Reel inner diameter
7" Reel outside diameter
7" Reel inner diameter
Feed hole diameter
Sprocket hole position
Punch hole position
Punch hole pitch
Sprocket hole pitch
Embossment center
Overall tape thickness
Tape width
Reel width
A
B
C
d
D
D
1
D
D
1
D
2
E
F
P
P
0
P
1
T
W
W
1
0.1
0.1
0.1
0.1
2.0
min
2.0
min
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.3
1.0
2.36
2.40
1.20
1.50
-
-
178.00
62.00
13.00
1.75
3.50
4.00
4.00
2.00
0.23
8.00
11.40
Note:Devices are packed in accor dance with EIA standar RS-481-A and specifications listed above.
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Document ID
Issued Date
2009/08/10
Revised Date
2010/03/10
Revision
B
Page.
7
Page 5
DS-221932
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