User Manual

MMBD4448
Document number: DS12011 Rev. 17 - 2
2 of 4
www.diodes.com
February 2011
© Diodes Incorporated
MMBD4448
Maximum Ratings @T
A
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Non-Repetitive Peak Reverse Voltage
V
RM
100 V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
75 V
RMS Reverse Voltage
V
R
(
RMS
)
53 V
Forward Continuous Current (Note 4)
I
FM
500 mA
Average Rectified Output Current (Note 4)
I
O
250 mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0
μ
s
@ t = 1.0s
I
FSM
4.0
1.0
A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4)
P
D
350 mW
Thermal Resistance Junction to Ambient Air (Note 4)
R
θ
JA
357
°C/W
Operating and Storage Temperature Range
T
J
, T
STG
-65 to +150
°C
Electrical Characteristics @T
A
= 25°C unless otherwise specified
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5)
V
(
BR
)
R
75
⎯
V
I
R
= 2.5μA
Forward Voltage
V
F
0.62
⎯
⎯
⎯
0.72
0.855
1.0
1.25
V
I
F
= 5.0mA
I
F
= 10mA
I
F
= 100mA
I
F
= 150mA
Reverse Current (Note 5)
I
R
⎯
2.5
50
30
25
μA
μA
μA
nA
V
R
= 75V
V
R
= 75V, T
J
= 150°C
V
R
= 25V, T
J
= 150°C
V
R
= 20V
Total Capacitance
C
T
⎯
4.0 pF
V
R
= 0, f = 1.0MHz
Reverse Recovery Time
t
rr
⎯
4.0 ns
I
F
= I
R
= 10mA,
I
rr
= 0.1 x I
R
, R
L
= 100Ω
Notes: 4. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com.
5. Short duration pulse test used to minimize self-heating effect.
0
100
120
80
160
200
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
T , AMBIENT TEMPERATURE (°C)
Fig. 1 Power Derating Curve
A
200
300
500
0
40
400
Note 4
10
100
1,000
1
0.1
0
1.61.20.4
0.8
I, I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
WA
R
D
C
U
R
R
E
N
T
(mA)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F