
SDM20E40C
Document number: DS30276 Rev. 9 - 2
2 of 4
www.diodes.com
May 2012
© Diodes Incorporated
SDM20E40C
Maximum Ratings @T
A
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
40 V
RMS Reverse Voltage
V
R
RMS
28 V
Forward Continuous Current (Note 6)
I
FM
0.4 A
Non-Repetitive Peak Forward Surge Current @ t = 8.3ms
I
FSM
2 A
Repetitive peak Forward Current
I
FRM
500 mA
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 6)
P
D
400 mW
Operating Temperature Range
T
OP
-30 to +85
°C
Junction Temperature Range
T
J
-30 to +125
°C
Storage Temperature Range
T
STG
-40 to +125 °C
Electrical Characteristics @T
A
= 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
Reverse Breakdown Voltage (Note 7)
V
BR
R
40
⎯ ⎯
V
I
R
= 500μA
Forward Voltage
V
F
⎯
⎯
⎯
⎯
300
500
mV
I
F
= 10mA
I
F
= 200mA
Leakage Current (Note 7)
I
R
⎯ ⎯
70
μA
V
R
= 25V
Total Capacitance
C
T
⎯ ⎯
100 pF
V
R
= 0V, f = 1.0MHz
Notes: 6. Mounted on FR4 PC Board with recommended pad layout which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
7. Short duration pulse test used to minimize self-heating effect.
0.1
1.0
10
100
1,000
I , INS
AN
ANE
S
WA
D
EN
(mA)
F
0
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
Fig. 1 Typical Forward Characteristics
R
100 200 300 400 500 600 700
01020
30
40
I, INS
AN
ANE
S
EVE
SE
EN
(uA)
R
V , INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 2 Typical Reverse Characteristics
R
T = 0ºC
A
T = 125ºC
A
T = 75ºC
A
T = 25ºC
A
1,000
100
10
1
0.1
10,000
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