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B0540W
0.5A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
Features
Low Forward Voltage Drop
Guard Ring Construction for Transient Protection
High Conductance
Lead, Halogen and Antimony Free, RoHS Compliant (Note 1)
"Green" Device (Note 5)
Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
Case: SOD-123
Case Material: Molded Plastic, “Green” Molding Compound
(Note 5). 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 3
Ordering Information: See Page 3
Weight: 0.01 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 (See Figure 4)
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
40
28
0.5
5.5
Unit
V
V
A
A
Thermal Characteristics
Characteristic
Thermal Resistance Junction to Ambient Air (Note 2) TA = 25°C
Thermal Resistance Junction to Ambient Air (Note 3) TA = 25°C
Operating and Storage Temperature Range
Symbol
RθJA
RθJA
TJ, TSTG
Typ Max
385
325
-65 to +150
Unit
°C/W
°C/W
°C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic
Minimum Reverse Breakdown Voltage (Note 4)
Maximum Forward Voltage Drop
Maximum Leakage Current (Note 4)
Total Capacitance
Symbol
V(BR)R
VFM
IRM
CT
Value
40
0.510
0.620
0.460
0.610
10
20
5.0
13
170
Unit
V
V
μA
mA
pF
Test Conditions
IR = 20μA
IF = 0.5A, TJ = 25°C
IF = 1.0A, TJ = 25°C
IF = 0.5A, TJ = 100°C
IF = 1.0A, TJ = 100°C
VR = 20V, TJ = 25°C
VR = 40V, TJ = 25°C
VR = 20V, TJ = 100°C
VR = 40V, TJ = 100°C
f = 1MHz, VR = 0V DC
Notes:
1. No purposefully added lead. Halogen and Antimony Free.
2. FR-4 PCB, minimum recommended pad layout per http://www.diodes.com/datasheets/ap02001.pdf.
3. Polymide PCB, minimum recommended pad layout per http://www.diodes.com/datasheets/ap02001.pdf.
4. Short duration pulse test used to minimize self-heating effect.
5. 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.
B0540W
Document number: DS30138 Rev. 10 - 2
1 of 3
www.diodes.com
March 2009
© Diodes Incorporated

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0.4
IPK
IAV
0.3
B0540W
0.2
0.1
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
IF(AV), AVERAGE FORWARD CURRENT (A)
Fig. 1 Forward Power Dissipation
0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
100
10
TJ = 125°C
TJ = 100°C
TJ = 85°C
1
TJ = 25°C
0.1
0.01
TJ = -65°C
0.001
0 10 20 30 40
VR, INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 3 Typical Reverse Characteristics
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 30 60 90 120 150
TA, AMBIENT TEMPERATURE (°C)
Fig. 5 Forward Current Derating Curve
0
0 5 10 15 20 25 30
VR, DC REVERSE VOLTAGE (V)
Fig. 4 Total Capacitance vs. Reverse Voltage
B0540W
Document number: DS30138 Rev. 10 - 2
2 of 3
www.diodes.com
March 2009
© Diodes Incorporated

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B0540W
Ordering Information (Note 6)
Notes:
Part Number
B0540W-7-F
Case
SOD-123
6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Packaging
3000/Tape & Reel
Marking Information
Date Code Key
Year
Code
Month
Code
SF
1998
J
Jan
1
1999 2000 2001
K LM
Feb Mar
23
2002
N
Apr
4
SF = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)
2003
P
May
5
2004 2005 2006 2007
RSTU
Jun Jul Aug
6 78
2008
V
Sep
9
2009 2010 2011
WX Y
Oct Nov
ON
2012
Z
Dec
D
Package Outline Dimensions
C
H
B
A
MK
L
SOD-123
Dim Min Max
A 0.55 Typ
B 1.40 1.70
C 3.55 3.85
H 2.55 2.85
J 0.00 0.10
K 1.00 1.35
L 0.25 0.40
M 0.10 0.15
α0
All Dimensions in mm
Suggested Pad Layout
X
Y
C
G
Z
Dimensions
Z
G
X
Y
C
Value (in mm)
4.9
2.5
0.7
1.2
3.7
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.
B0540W
Document number: DS30138 Rev. 10 - 2
3 of 3
www.diodes.com
March 2009
© Diodes Incorporated