Diodes SDM20U40 User Manual
Features
Low Forward Voltage Drop
Guard Ring Construction for Transient Protection
Negligible Reverse Recovery Time
Low Reverse Capacitance
Ultra-Small Surface Mount Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
Top View
SDM20U40
SURFACE MOUNT SCHOTTKY BARRIER DIODE
Mechanical Data
Case: SOD523
Case Material: Molded Plastic, "Green" Molding Compound. UL
Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Lead Free Plating (Matte Tin Finish). Solderable per
MIL-STD-202, Method 208
Polarity: Cathode Band
Weight: 0.002 grams (approximate)
Ordering Information (Note 4)
Device Packaging Shipping
SDM20U40-7 (Note 5) SOD523 3,000/Tape & Reel
SDM20U40-13 (Note 6) SOD523 10,000/Tape & Reel
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. For packaging details, go to our website at http”//www.diodes.com/products/packages.html
5. Dispensed in every other cavity of the tape.
6. Dispensed in every cavity of the tape.
Marking Information
SDM20U40
Document number: DS30393 Rev. 10 - 2
S4
1 of 4
www.diodes.com
S4 = Product Type Marking Code
May 2013
© Diodes Incorporated
)
(BR)
N
TAN
T
N
O
U
O
R
R
C
URREN
T
Maximum Ratings (@T
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Forward Continuous Current (Note 7)
Non-Repetitive Peak Forward Surge Current @ t 1.0s
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 7)
Thermal Resistance, Junction to Ambient Air (Note 7)
Operating and Storage Temperature Range
V
T
V
RRM
V
RWM
V
R
R(RMS
I
FM
I
FSM
P
D
R
JA
, T
J
STG
SDM20U40
40 V
28 V
250 mA
1.0 A
150 mW
667
-65 to +125
C/W
C
Electrical Characteristics (@T
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Min Typ Max Unit Test Conditions
Reverse Breakdown Voltage (Note 8)
Forward Voltage Drop
Peak Reverse Current (Note 8)
Total Capacitance
Reverse Recovery Time
Notes: 7. Device mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
8. Short duration pulse test used so as to minimize self-heating effect.
V
V
F
I
R
C
T
t
rr
40
R
0.35
0.37
0.60
5
1
50
10
V
IR = 10µA
= 10mA
I
F
V
I
= 20mA
F
I
= 200mA
F
= 30V
V
µA
R
µA
pF
ns
= 10V
V
R
VR = 0V, f = 1.0MHz
= IR = 200mA,
I
F
I
= 0.1 x IR, RL = 100
rr
1,000
(mA)
100
T = 125°C
10
A
T = 75°C
1
A
D
WA
S F
T = 25°C
E
0.1
A
1,000
100
10
0.1
T = 125°C
A
T = 75°C
A
1
T = 25°C
A
A
T = -25°C
A
20
30
40
S
I, I
F
0.01
T = -25°C
A
0.001
0
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
F
200
400
Figure 1 Typical Forward Characteristi cs
600
800
I , INSTANTANEOUS REVERSE CURRENT (µA)
R
0.01
0.001
1
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
10
Figure 2 Typical Reverse Characteristics
SDM20U40
Document number: DS30393 Rev. 10 - 2
2 of 4
www.diodes.com
May 2013
© Diodes Incorporated
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