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Features
Low Forward Voltage Drop
Guard Ring Die Construction for Transient Protection
High Conductance
Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 3 and 4)
B0520WS
SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
Mechanical Data
Case: SOD-323
Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020D
Lead Free Plating (Matte Tin Finish annealed over Alloy 42
leadframe). Solderable per MIL-STD-202, Method 208
Polarity: Cathode Band
Marking Information: See Page 2
Ordering Information: See Page 2
Weight: 0.004 grams (approximate)
Top View
Maximum Ratings @TA = 25°C unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitance load, derate current by 20%.
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Average Rectified Output Current
Non-Repetitive Peak Forward Surge Current 8.3ms
Single Half Sine-Wave Superimposed on Rated Load
Symbol
VRRM
VRWM
VR
VR(RMS)
IO
IFSM
Value
20
14
0.5
2
Unit
V
V
A
A
Thermal Characteristics
Characteristic
Power Dissipation (Note 1)
Typical Thermal Resistance Junction to Ambient (Note 1)
Operating and Storage Temperature Range
Symbol
PD
RθJA
TJ, TSTG
Value
235
426
-55 to +125
Unit
mW
°C/W
°C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic
Minimum Reverse Breakdown Voltage (Note 2)
Maximum Forward Voltage Drop
Maximum Leakage Current (Note 2)
Typical Total Capacitance
Symbol
V(BR)R
VF
IR
CT
Value
20
0.310
0.430
100
250
58
Unit
V
V
μA
pF
Test Conditions
IR = 0.5mA
IF = 0.1A
IF = 0.5A
VR = 10V
VR = 20V
f = 1MHz, VR = 0VDC
Notes:
1. Part mounted on FR-4 PC board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
2. Short duration pulse test used to minimize self-heating effect.
3. No purposefully added lead. Halogen and Antimony Free.
4. Product manufactured with Data Code V9 (week 33, 2008) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code V9 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
B0520WS
Document number: DS30235 Rev. 12 - 2
1 of 3
www.diodes.com
June 2008
© Diodes Incorporated

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10
1
0.1
0.01
0.001
0 0.2 0.4 0.6 0.8 1.0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 1 Typical Forward Characteristics
70
60
50
40
30
20
10
0
0 5 10 15 20
VR, DC REVERSE VOLTAGE (V)
Fig. 3 Total Capacitance vs. Reverse Voltage
B0520WS
10,000
1,000
100
10
1
0.1
0.01
0.001
0
10 20
VR, INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 2 Typical Reverse Characteristics
1.0
0.75
0.50
0.25
0
0 25 50 75 100 125 150
TT, TERMINAL TEMPERATURE (°C)
Fig. 4 Forward Current Derating Curve
Ordering Information (Note 5)
Notes:
Part Number
B0520WS-7-F
Case
SOD-323
5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
Packaging
3000/Tape & Reel
SD SD = Product Type Marking Code
B0520WS
Document number: DS30235 Rev. 12 - 2
2 of 3
www.diodes.com
June 2008
© Diodes Incorporated

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Package Outline Dimensions
C
H
B
A
MK
L
Suggested Pad Layout
X
Y
C
G
Z
SOD-323
Dim Min Max
A 0.25 0.35
B 1.20 1.40
C 2.30 2.70
H 1.60 1.80
J 0.00 0.10
K 1.0 1.1
J L 0.20 0.40
M 0.10 0.15
α 0° 8°
All Dimensions in mm
Dimensions
Z
G
X
Y
C
Value (in mm)
3.75
1.05
0.65
1.35
2.40
B0520WS
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product
described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written
approval of the President of Diodes Incorporated.
B0520WS
Document number: DS30235 Rev. 12 - 2
3 of 3
www.diodes.com
June 2008
© Diodes Incorporated