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®
WON-TOP ELECTRONICS
SB4020CT – SB40100CT
40A DUAL SCHOTTKY BARRIER RECTIFIER
Pb
Features
Schottky Barrier Chip
Guard Ring for Transient Protection
Low Forward Voltage Drop
Low Power Loss, High Efficiency
High Surge Current Capability
Epoxy Meets UL 94V-0 Classification
Ideally Suited for Use in High Frequency
SMPS, Inverters and As Free Wheeling Diodes
C
G
D
B
PIN1 2
3
A
Mechanical Data
Case: TO-220, Molded Plastic
Terminals: Plated Leads Solderable per
MIL-STD-202, Method 208
Polarity: See Diagram
Weight: 1.9 grams (approx.)
Mounting Position: Any
Mounting Torque: 0.6 N.m Max.
Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 4
F
P
I
H
E
L
J
K
TO-220
Dim Min Max
A 13.90 15.90
B 9.80 10.70
C 2.54 3.43
D 3.56 4.56
E 12.70 14.73
F 0.51 0.96
G 3.55 Ø 4.09 Ø
H 5.75 6.85
I 4.16 5.00
J 2.03 2.92
K 0.30 0.65
L 1.14 1.40
P 2.29 2.79
All Dimensions in mm
PIN 1
PIN 3
PIN 2
Case
Maximum Ratings and Electrical Characteristics @TA=25°C unless otherwise specified
Single Phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%.
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Average Rectified Output Current Total Device
@TC = 100°C
Per Diode
Non-Repetitive Peak Forward Surge Current
8.3ms Single Half Sine-Wave Superimposed
on Rated Load (JEDEC Method)
Forward Voltage per diode @IF = 20A, TJ = 25°C
@IF = 20A, TJ = 125°C
Peak Reverse Current
At Rated DC Blocking Voltage
@TJ = 25°C
@TJ = 100°C
Typical Junction Capacitance (Note 1)
Thermal Resistance Junction to Ambient per diode
Thermal Resistance Junction to Case per diode
Operating and Storage Temperature Range
Symbol
VRRM
VRWM
VR
VR(RMS)
IO
IFSM
VFM
IRM
CJ
R JA
R JC
TJ, TSTG
SB SB SB SB SB SB SB SB Unit
4020CT 4030CT 4040CT 4045CT 4050CT 4060CT 4080CT 40100CT
20 30 40 45 50 60 80 100 V
14 21 28 32 35 42 56 70
40
20
V
A
250 A
0.70
0.60
1100
0.75 0.85
0.65 0.75
1.0
20
650
50
1.5
-55 to +150
V
mA
pF
°C/W
°C
Note: 1. Measured at 1.0 MHz and applied reverse voltage of 4.0V D.C.
© Won-Top Electronics Co., Ltd.
Revision: September, 2012
www.wontop.com
1

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SB4020CT – SB40100CT
50
40
30
20
10
Resistive or
Inductive Load
0
0 15 30 45 60 75 90 105 120 135 150
TC, CASE TEMPERATURE (°C)
Fig. 1 Forward Current Derating Curve
250
Single Half-Sine-Wave
JEDEC Method
200
150
100
50
0
1 10 100
NUMBER OF CYCLES AT 60Hz
Fig. 3 Forward Surge Current Derating Curve
20
18
DC, TJ = 150°C
Per Diode
16
14
12
4080CT – 40100CT
10
4050CT – 4060CT
8
4020CT – 4045CT
6
4
2
0
0 5 10 15 20 25
IF(AV), AVERAGE FORWARD CURRENT (A)
Fig. 5 Forward Power Dissipation
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2
®
100
Pulse Width = 300µs
1% Duty Cycle
TJ = 25°C
WON-TOP ELECTRONICS
10
4020CT – 4045CT
1.0
4050CT – 4060CT
4080CT – 40100CT
0.1
0
0.2 0.4 0.6 0.8 1.0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
100
10 TJ = 125°C
TJ = 100°C
1.0
0.1
0.01
TJ = 25°C
0.001
0
20 40 60 80 100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
Fig. 4 Typical Reverse Characteristics
3000
2400
f = 1MHz
1800
1200
4020CT – 4045CT
4050CT – 40100CT
600
0
0.1
1 10
VR, DC REVERSE VOLTAGE (V)
Fig. 6 Typical Junction Capacitance
100
© Won-Top Electronics Co., Ltd.
Revision: September, 2012

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®
WON-TOP ELECTRONICS
MARKING INFORMATION
SB4020CT – SB40100CT
SB40xxCT
SB40xxCT
xx
Polarity
= Device Number
= 20, 30, 40, 45, 50, 60, 80 or 100
= As Marked on Body
PACKAGING INFORMATION
BULK
Tube Size
L x W x H (mm)
525 x 31 x 6
Quantity
(PCS)
50
Inner Box Size
L x W x H (mm)
555 x 145 x 95
Quantity
(PCS)
2,000
Carton Size
L x W x H (mm)
572 x 306 x 218
Quantity
(PCS)
8,000
Approx. Gross Weight
(KG)
19.0
Note: 1. Anti-static tube, water clear color.
RECOMMENDED SCREW MOUNTING ARRANGEMENT
Recommended isolated mounting when
screw is at heatsink potential. 4-40
hardware is used.
Screw should not be tightened with any
type of air-forced torque or equipment
that may cause high impact on device
package. The insulating bushing inside
the mounting hole will insure the screw
threads do not contact the metal base.
The interface should apply a layer of
thermal grease or a highly conductive
thermal pad for better heat dissipation.
4-40 PAN or HEX Head Screw
Plain Washer
Insulating Bushing
Rectifier
Insulator
Heatsink
Compression Washer
4-40 HEX Nut
© Won-Top Electronics Co., Ltd.
Revision: September, 2012
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SB4020CT – SB40100CT
®
WON-TOP ELECTRONICS
ORDERING INFORMATION
Product No.
SB4020CT
SB4030CT
SB4040CT
SB4045CT
SB4050CT
SB4060CT
SB4080CT
SB40100CT
Package Type
TO-220
TO-220
TO-220
TO-220
TO-220
TO-220
TO-220
TO-220
Shipping Quantity
50 Units/Tube
50 Units/Tube
50 Units/Tube
50 Units/Tube
50 Units/Tube
50 Units/Tube
50 Units/Tube
50 Units/Tube
1. Shipping quantity given is for minimum packing quantity only. For minimum
order quantity, please consult the Sales Department.
2. To order RoHS / Lead Free version (with Lead Free finish), add “-LF”
suffix to part number above. For example, SB4020CT-LF.
WON-TOP ELECTRONICS and
are registered trademarks of Won-Top Electronics Co., Ltd (WTE). WTE has checked all information carefully and
believes it to be correct and accurate. However, WTE cannot assume any responsibility for inaccuracies. Furthermore, this information does not give the
purchaser of semiconductor devices any license under patent rights to manufacturer. WTE reserves the right to change any or all information herein
without further notice.
WARNING: DO NOT USE IN LIFE SUPPORT EQUIPMENT. WTE power semiconductor products are not authorized for use as critical components in life
support devices or systems without the express written approval.
Won-Top Electronics Co., Ltd.
No. 44 Yu Kang North 3rd Road,
Chine Chen Dist., Kaohsiung 806, Taiwan
Phone: 886-7-822-5408 or 886-7-822-5410
Fax: 886-7-822-5417
Email: sales@wontop.com
Internet: http://www.wontop.com
We power your everyday.
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© Won-Top Electronics Co., Ltd.
Revision: September, 2012