Features
• Fast Switching Speed
• Surface Mount Package Ideally Suited for Automated Insertion
• High Reverse Breakdown Voltage
• Low Leakage Current
• Lead Free By Design/RoHS Compliant (Note 1)
• "Green" Device (Notes 2 and 3)
• Qualified to AEC-Q101 Standards for High Reliability
SOT363
Top View
BAS20DW-BAS21DW
SURFACE MOUNT HIGH VOLTAGE DUAL SWITCHING DIODE
Mechanical Data
• Case: SOT363
• Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminal Connections: See Diagram
• Terminals: Finish ⎯ Matte Tin annealed over Alloy 42
leadframe. Solderable per MIL-STD-202, Method 208
• Weight: 0.003 grams (approximate)
Top View
Internal Schematic
Ordering Information (Note 4)
Part Number Qualification Case Packaging
BAS20DW-7 Commercial SOT363 3,000/Tape & Reel
BAS20DW-13 Commercial SOT363 10,000/Tape & Reel
BAS20DWQ-13 Automotive SOT363 10,000/Tape & Reel
BAS21DW-7 Commercial SOT363 3,000/Tape & Reel
Notes: 1. No purposefully added lead.
Code UO are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
4. For packaging details, go to our website at http://www.diodes.com.
2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com.
3. Product manufactured with Date Code UO (week 40, 2007) and newer are built with Green Molding Compound. Product manufactured prior to Date
Marking Information
Date Code Key
Year 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Code S T U V W X Y Z A B C
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Code 1 2 3 4 5 6 7 8 9 O N D
xxx YM
xxx YM
BAS20DW-BAS21DW
Document number: DS30617 Rev. 11 - 2
xxx = Product Type Marking Code:
BAS20DW Marking: KT2 or KT3
BAS21DW Marking: KT3
YM = Date Code Marking
Y = Year (ex: Y = 2011)
M = Month (ex: 9 = September)
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)
θ
j
P, P
O
R
PATIO
TANT
O
U
FORWARD CUR
RENT
Maximum Ratings @T
= 25°C unless otherwise specified
A
Characteristic Symbol BAS20DW BAS21DW Unit
Repetitive Peak Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Forward Continuous Current
Average Rectified Output Current
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs
@ t = 1.0s
Repetitive Peak Forward Surge Current
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 5)
Thermal Resistance Junction to Ambient Air (Note 5)
Operating and Storage Temperature Range
V
V
V
R(RMS
I
I
RRM
RWM
V
I
FM
I
O
FSM
FRM
BAS20DW-BAS21DW
R
P
D
R
JA
T
, T
J
STG
200 250 V
150 200 V
106 141 V
400 mA
200 mA
2.5
0.5
A
625 mA
200 mW
625
-65 to +150
°C/W
°C
Electrical Characteristics @T
= 25°C unless otherwise specified
A
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 6) BAS20DW
BAS21DW
Forward Voltage
Reverse Current
@ Rated DC Blocking Voltage (Note 6)
Total Capacitance
Reverse Recovery Time
Notes: 5. 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.
6. Short duration pulse test used to minimize self-heating effect.
V
(BR)R
V
F
I
⎯
R
C
T
t
⎯
rr
200
250
⎯
⎯
⎯
⎯
1.0
1.25
100
15
5.0 pF
50 ns
V
IR = 100μA
I
V
I
nA
T
μA
T
VR = 0, f = 1.0MHz
I
I
= 100mA
F
= 200mA
F
= 25°C
j
= 100°C
= IR = 30mA,
F
= 0.1 x IR, RL = 100Ω
rr
250
1
(A)
200
N (mW )
0.1
150
DISSI
WE
d
100
50
S
0.01
ANE
F
0
-50
050100150
T , AMBIENT TEMPERA TURE ( C)
A
°
Fig. 1 Derating Curve - Total
I, INS
0.001
0
V , INSTANTANEOUS FORWARD VOLTAGE (V)
F
0.40.2 0. 6
0.8 1.21.0
Fig. 2 Typical Forward Characteristics
1.4
BAS20DW-BAS21DW
Document number: DS30617 Rev. 11 - 2
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C
T
O
T
CAPACIT
C
F
100
10
0.1
0.01
0.001
0.0001
1
0
50 100
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
Fig. 3 Typical Reverse Characteristics
Package Outline Dimensions
K
J
A
B C
H
D
F
Suggested Pad Layout
G
Z
Y
C2
X
C2
BAS20DW-BAS21DW
4.0
3.5
)
3.0
E (p
2.5
AN
2.0
1.5
AL
,
1.0
T
0.5
200150
L
C1
250
M
0.0
0
Fig. 4 Typical Capacitance vs. Reverse Voltage
Dim Min Max
A 0.10 0.30
B 1.15 1.35
C 2.00 2.20
D 0.65 Typ
F 0.40 0.45
H 1.80 2.20
J 0 0.10
K 0.90 1.00
L 0.25 0.40
M 0.10 0.22
α
All Dimensions in mm
Dimensions Value (in mm)
Z 2.5
G 1.3
X 0.42
Y 0.6
C1 1.9
C2 0.65
10
V , REVERSE VOLTAGE (V)
R
SOT363
0° 8°
20
30
40
BAS20DW-BAS21DW
Document number: DS30617 Rev. 11 - 2
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IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein 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 Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorize d application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2011, Diodes Incorporated
www.diodes.com
BAS20DW-BAS21DW
BAS20DW-BAS21DW
Document number: DS30617 Rev. 11 - 2
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