B0540WS
Document number: DS30524 Rev. 8 - 2 1 of 3
www.diodes.com May 2008
© Diodes Incorporated
B0540WS
SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
Features
• Low Forward Voltage Drop
• Guard Ring Construction for Transient Protection
• High Conductance
• Lead Free By Design/RoHS Compliant (Note 3)
• "Green" Device (Note 4)
Mechanical Data
• Case: SOD-323
• Case Material: Molded Plastic, "Green" Molding Compound.
UL Flammability Rating Classification 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020D
• Polarity: Cathode Band
• Terminals: Finish - Matte Tin Annealed Over Alloy 42
leadframe. Solderable per MIL-STD-202, Method 208
• 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 Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR 40 V
RMS Reverse Voltage VR(RMS) 28 V
Average Rectified Output Current IO 0.5 A
Non-Repetitive Peak Forward Surge Current
8.3ms single half sine-wave superimposed on rated load IFSM 3 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 1) PD 235 mW
Typical Thermal Resistance Junction to Ambient (Note 1) RθJA 426 °C/W
Operating and Storage Temperature Range TJ, TSTG -40 to +125 °C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
Reverse Breakdown Voltage (Note 2) V(BR)R 40 ⎯ ⎯ V IR = 1mA
Forward Voltage VF ⎯ 285
480 300
550 mV IF = 10mA
IF = 500mA
Reverse Current (Note 2) IR ⎯
⎯ 1.0
2.0 3
5 μA
μA VR = 10V
VR = 30V
Total Capacitance CT ⎯
⎯ 125
20 ⎯
⎯ pF
pF VR = 0V, f = 1.0MHz
VR = 10V, f = 1.0MHz
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.
4. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
B0540WS
10
1
100
1,000
.00100
B0540WS
Document number: DS30524 Rev. 8 - 2 2 of 3
www.diodes.com May 2008
© Diodes Incorporated
.60
1m
10m
010202535 40
155.0 30
V , INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 2 Typical Reverse Characteristics
R
T = 25°C
A
T = 75°C
A
T = 125°C
A
I, I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
WA
R
D
C
U
R
R
E
N
T
(mA)
F
V , INSTANTA NEOUS FORW ARD VOLTAGE (V)
Fig. 1 Typical Forward Characteristics
F
0.10 0.20 0.30 0.40 0.50
.01
.1
0
10
100
C
,
T
O
T
AL
C
A
P
A
C
I
T
AN
C
E (p
F
)
T
V , DC REVERSE VOLTAGE (V)
Fig. 3 Total Capacitance vs. Reverse Voltage
R
1,000
510 25
20
15
0
0.25
0.50
050100
I, AVE
150
R
A
G
E
F
O
R
WA
R
D
C
U
R
R
EN
T
(A)
F(AV)
T , TERMINAL TEMPERATURE ( C)
Fig. 4 Forward Current Derating Curve
T
°
0.75
1.0
25 75 125
Ordering Information (Note 5)
Part Number Case Packaging
B0540WS-7 SOD-323 3000/Tape & Reel
Notes: 5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
SF
SF = Product Type Marking Code
B0540WS
Document number: DS30524 Rev. 8 - 2 3 of 3
www.diodes.com May 2008
© Diodes Incorporated
B0540WS
Package Outline Dimensions
Suggested Pad Layout
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.
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
L 0.20 0.40
M 0.10 0.15
α 0° 8°
All Dimensions in mm
K
L
MJ
C
H
BA
Z
X
C
G
Y
Dimensions Value (in mm)
Z 3.75
G 1.05
X 0.65
Y 1.35
C 2.40
