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®
WON-TOP ELECTRONICS
BAS70W / AW / CW / SW
SURFACE MOUNT SCHOTTKY BARRIER DIODE
Pb
Features
Single and Dual Diode
Low Forward Voltage, Fast Switching Speed
PN Junction Guard Ring for Transient and
ESD Protection
For General Purpose Switching Applications
Plastic Material – UL Recognition Flammability
Classification 94V-0
B
Mechanical Data
Case: SOT-323, Molded Plastic
K
Terminals: Plated Leads Solderable per
MIL-STD-202, Method 208
Polarity: See Diagrams Below
Weight: 0.006 grams (approx.)
Marking: Device Code, See Page 3
Mounting Position: Any
Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 4
A
ED
H
G
L
C
M
SOT-323
Dim Min
Max
A
0.25
0.40
B
1.15
1.35
C
2.00
2.40
J D 0.65 Nominal
E
0.30
0.40
G
1.20
1.40
H
1.80
2.20
J — 0.10
K
0.90
1.10
L 0.25
M
0.05
0.15
All Dimensions in mm
TOP VIEW
BAS70W
TOP VIEW
BAS70AW
Maximum Ratings @TA=25°C unless otherwise specified
TOP VIEW
BAS70CW
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Forward Continuous Current
Non-Repetitive Peak Forward Surge Current
Operating Temperature Range
Storage Temperature Range
@ t < 1.0s
Thermal Characteristics
Symbol
VRRM
VRWM
VR
IF
IFSM
TJ
TSTG
Characteristic
Power Dissipation (Note 1)
Thermal Resistance, Junction to Ambient (Note 1)
Symbol
PD
R JA
Note: 1. Mounted on FR-4 PC board with minimum recommended pad layout.
© Won-Top Electronics Co., Ltd.
Revision: April, 2012
TOP VIEW
BAS70SW
Value
70
70
100
-55 to +125
-65 to +150
Unit
V
mA
mA
°C
°C
Value
200
625
Unit
mW
°C/W
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BAS70W / AW / CW / SW
®
WON-TOP ELECTRONICS
Electrical Characteristics @TA=25°C unless otherwise specified
Characteristic
Reverse Breakdown Voltage
@ IR = 10µA
Forward Voltage Drop
@ IF = 1.0mA
@ IF = 15mA
Reverse Leakage Current
@ VR = 50V
Diode Capacitance (VR = 0V, f = 1.0MHz)
Reverse Recovery Time (IF = IR = 10mA, IRR = 0.1 x IR, RL = 100)
Symbol
V(BR)
VF
IR
CD
trr
Min.
70
Typ.
20
1.5
Max.
0.41
1.00
100
2.0
5.0
Unit
V
V
nA
pF
nS
250
200
150
100
50
0
0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Fig. 1 Power Derating Curve
2.0
1.6
f = 1.0MHz
1.2
0.8
0.4
0
0 10 20 30 40 50
VR, DC REVERSE VOLTAGE (V)
Fig. 3 Total Capacitance vs. Reverse Voltage
100
10
TA = 125°C
TA = 75°C
1.0 TA = 25°C
TA = -40°C
0.1
0
0.2 0.4 0.6 0.8 1.0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
100
TA = 150°C
10 TA = 125°C
1.0
TA = 85°C
0.1
0.01
TA = 25°C
0.001
0
10 20 30 40 50
VR, INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 4 Typical Reverse Characteristics
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© Won-Top Electronics Co., Ltd.
Revision: April, 2012

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®
WON-TOP ELECTRONICS
BAS70W / AW / CW / SW
MARKING INFORMATION
RECOMMENDED FOOTPRINT
xx
xx = Device Code, See Table Below
Mfg Site
TW Plant
CN Plant
BAS70W
A70
K73
BAS70AW
A72
K76
BAS70CW
A73
K75
BAS70SW
A74
K74
0.035
(0.90)
0.035
(0.90)
0.028
(0.70)
0.075
(1.90)
0.025
(0.64)
inches(mm)
PACKAGING INFORMATION
TAPE & REEL
Inspection Hole
178mm
Product ID Label
Direction of Unreeling
8mm
8mm
4mm
4mm
1.6mm
Reel Diameter
(mm)
178
Quantity
(PCS)
3,000
Inner Box Size
L x W x H (mm)
187 x 187 x 65
Quantity
(PCS)
15,000
Carton Size
L x W x H (mm)
390 x 240 x 420
Quantity
(PCS)
150,000
Approx. Gross Weight
(KG)
10.0
Note: 1. Anti-static plastic reel, white, water clear or blue color. Inspection hole might be varied in different alignment.
2. Components are packed in accordance with EIA standard 481-1 and 481-2.
© Won-Top Electronics Co., Ltd.
Revision: April, 2012
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BAS70W / AW / CW / SW
®
WON-TOP ELECTRONICS
ORDERING INFORMATION
Product No.
BAS70W-T1
BAS70AW-T1
BAS70CW-T1
BAS70SW-T1
Package Type
SOT-323
SOT-323
SOT-323
SOT-323
Shipping Quantity
3000/Tape & Reel
3000/Tape & Reel
3000/Tape & Reel
3000/Tape & Reel
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, BAS70W-T1-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: April, 2012