DS30397 Rev. 2 - 2
1 of 2
SDM20U30
www.diodes.com
Diodes Incorporated
SDM20U30
SURFACE MOUNT SCHOTTKY BARRIER DIODE
Features
Low Forward Voltage Drop
Guard Ring Construction for
Transient Protection
Negligible Reverse Recovery Time
Low Reverse Capacitance
Ultra-Small Surface Mount Package
Case: SOD-523, Plastic
Case material - UL Flammability Rating
Classification 94V-0
Moisture sensitivity: Level 1 per J-STD-020A
Terminals: Finish - Matte Tin (Note 1)
Solderable per MIL-STD-202, Method 208
Polarity: Cathode Band
Marking Code: LM
Weight: 0.002 grams (approx.)
Mechanical Data
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
Electrical Characteristics
@ 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
30
V
RMS Reverse Voltage
V
R(RMS)
21
V
Mean Rectifying Current (Note 2)
I
O
200
mA
Peak Forward Surge Current
8.3ms Half Sine
I
FSM
1.0
A
Power Dissipation (Note 2)
P
d
150
mW
Thermal Resistance, Junction to Ambient Air (Note 2)
R
qJA
667
C/W
Operating and Storage Temperature Range
T
j
, T
STG
-65 to +125
C
Characteristic
Symbol
Min
Typ
Max
Unit
Test Conditions
Reverse Breakdown Voltage
V
(BR)R
30
V
I
R
= 150
mA
Forward Voltage Drop
V
F
0.35
0.50
V
I
F
= 20mA
I
F
= 200mA
Peak Reverse Current (Note 3)
I
R
150
30
mA
mA
V
R
= 30V
V
R
= 10V
Total Capacitance
C
T
20
pF
V
R
= 0V, f = 1.0MHz
B
A
C
D
G
E
CATHODE MARK
MARKING CODE
LM
T
C
U
D
O
R
P
W
E
N
SOD-523
Dim
Min
Max
A
1.50
1.70
B
1.10
1.30
C
0.25
0.35
D
0.70
0.90
E
0.10
0.20
G
0.50
0.70
All Dimensions in mm
Ordering Information
Device
Packaging
Shipping
SDM20U30-7
SOD-523
3000/Tape & Reel
Note:
1. If lead-bearing terminal plating is required, please contact your Diodes Inc. sales representative for availability and minimum
order details.
2. Part mounted on FR-4 board with recommended pad layout, which can be found on our website
at http://www.diodes.com/datasheets/ap02001.pdf.
3. Short duration pulse test used so as to minimize self-heating effect.
4. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
(Note 4)
SPICE MODEL: SDM20U30
DS30397 Rev. 2 - 2
2 of 2
SDM20U30
www.diodes.com
0
50
0
25
50
75
100
125
P,
P
O
WER
D
ISSIP
A
TI
O
N
(mW)
D
T , AMBIENT TEMPERATURE (
C)
A
Fig. 1 Derating Curve
100
200
150
.001
.01
.1
1
10
1000
100
0
200
400
600
800
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
F
Fig. 2 Typical Forward Characteristics
I
,
INST
ANT
A
NEOUS
FOR
W
A
RD
CURRENT
(mA)
F
T = 25C
A
T = 75C
A
T = 125C
A
T = -25C
A
T
C
U
D
O
R
P
W
E
N
0
5
10
15
20
25
30
0
2
6
4
8
10
12
14
C
,
CAP
A
CIT
ANCE
BETWEEN
TERMINALS
(
pF)
T
V , REVERSE VOLTAGE (V)
R
Fig. 4 Typical Capacitance Between Terminals Characteristics
f = 1MHz
2
5
10
15
20
25
30
I
,
INST
ANT
ANEOUS
R
EVERSE
C
URRENT
(A)
R
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
Fig. 3 Typical Reverse Characteristics
100n
10m
1m
T = 25C
A
T = 75C
A
T = 125C
A
T = -25C
A
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