BAS21DWA
Document number: DS36559 Rev. 9 - 2
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January 2018
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BAS21DWA
ADVANCED I NF ORMATION
HIGH VOLTAGE SURFACE MOUNT DUAL SWITCHING DIODE
Features
Fast Switching Speed
Surface Mount Package Ideally Suited for Automated Insertion
High Reverse Breakdown Voltage Rating
ESD: MM 400V and HBM 4kV
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
PPAP Capable (Note 4)
Mechanical Data
Case: SOT353
Case Material: Molded Plastic, “Green” Molding Compound
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe
(Lead Free Plating). Solderable per MIL-STD-202, Method 208
Polarity: See Diagram
Weight: 0.006 grams (Approximate)
Ordering Information (Note 5)
Compliance
Case
Packaging
AEC-Q101
SOT353
3,000/Tape & Reel
Automotive
SOT353
3,000/Tape & Reel
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3).compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine
(<1500ppm total Br + Cl) and <1000ppm antimony compounds.
4. Automotive products are AEC-Q101 qualified and are PPAP capable. Automotive, AEC-Q101 and standard products are electrically and thermally the
same, except where specified. For more information, please refer to https://www.diodes.com/quality/.
5. For packaging details, go to our website at http://www.diodes.com/products/packages.html.
Marking Information
Date Code Key
Year
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Code
B
C
D
E
F
G
H
J
K
L
M
N
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
Top View
SOT353
KJS = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: F= 2018)
M = Month (ex: 9 = September)
Bottom View
3 1 NC
4 5
BAS21DWA
Document number: DS36559 Rev. 9 - 2
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ADVANCED I NF ORMATION
Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Characteristic
Symbol
Value
Unit
Repetitive Peak Reverse Voltage
VRRM
250
V
Working Peak Reverse Voltage
DC Blocking Voltage
VRWM
VR
250
V
RMS Reverse Voltage
VR(RMS)
175
V
Forward Continuous Current (Note 6)
IF
200
mA
Peak Repetitive Forward Current (Note 6)
IFRM
625
mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0µs
IFSM
4.0
A
Thermal Characteristics
Characteristic
Symbol
Value
Unit
Power Dissipation (Note 6)
PD
285
mW
Thermal Resistance Junction to Ambient Air (Note 6)
RθJA
435
°C/W
Operating and Storage Temperature Range
TJ , TSTG
-55 to +150
°C
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Characteristic
Symbol
Min
Typ
Max
Unit
Test Condition
Reverse Breakdown Voltage (Note 7)
V(BR)R
250
V
IR = 100µA
Forward Voltage
VF
0.90
1.05
1.3
V
IF = 20mA
IF = 100mA
IF = 200mA
Reverse Current (Note 7)
IR
30
35
100
100
nA
µA
VR = 200V
VR = 200V, TJ = +150°C
Total Capacitance
CT
0.7
5.0
pF
VR = 0V, f = 1.0MHz
Reverse Recovery Time
trr
50
ns
IF = IR = 30mA,
Irr = 3.0mA, RL = 100
Notes: 6. Part mounted on FR-4 substrate with pad dimensions 1 inch x 1 inch, 2oz, copper, single-sided, PC board.
7. Short duration pulse test used to minimize self-heating effect.
T , AMBIENT TEMPERATURE (°C)
Figure 1 Power Derating Curve, Total Package
A
P , POWER DISSIPATION (mW)
D
0
50
100
150
200
250
300
350
025 50 75 100 125 150
Note 6
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
FFigure 2 Typical Forward Characteristics
I , INSTANTANEOUS FORWARD CURRENT (mA)
F
0.001
0.01
0.1
1
10
100
1000
0 200 400 600 800 1000 1200
T = 25°C
A
T = 85°C
A
T = 125°C
A
T = 150°C
A
T = -55°C
A
BAS21DWA
Document number: DS36559 Rev. 9 - 2
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Package Outline Dimensions
Please see http://www.diodes.com/package-outlines.html for the latest version.
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
I , INSTANTANEOUS REVERSE CURRENT (µA)
R
V , INSTANTANEOUS REVERSE VOLTAGE (V)
RFigure 3 Typical Reverse Characteristics
0.0001
0.001
0.01
0.1
1
10
100
050 100 150 200
T = 25°C
A
T = 85°C
A
T = 125°C
A
T = 150°C
A
T = -55°C
A
V , DC REVERSE VOLTAGE (V)
R
Figure 4 Total Capacitance vs. Reverse Voltage
C , TOTAL CAPACITANCE (pF)
T
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0 5 10 15 20 25 30 35 40
f = 1MHz
SOT353
Dim
Min
Max
Typ
A1
0.00
0.10
0.05
A2
0.90
1.00
0.95
b
0.10
0.30
0.25
c
0.10
0.22
0.11
D
1.80
2.20
2.15
E
2.00
2.20
2.10
E1
1.15
1.35
1.30
e
0.650 BSC
F
0.40
0.45
0.425
L
0.25
0.40
0.30
a
0°
8°
--
All Dimensions in mm
Dimensions
Value
(in mm)
C
0.650
C1
1.900
G
1.300
X
0.420
X1
1.720
Y
0.600
Y1
2.500
E
b
E1
F
D
A2
A1 e
c
L
a
Y1
X1
C1
C
X
Y
G
BAS21DWA
Document number: DS36559 Rev. 9 - 2
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January 2018
© Diodes Incorporated
BAS21DWA
ADVANCED I NF ORMATION
IMPORTANT NOTICE
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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).
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final and determinative format released by Diodes Incorporated.
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
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representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
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