BAS21TW
SURFACE MOUNT FAST SWITCHING DIODE ARRAY
Features
Fast Switching Speed: max. 50ns
Continuous Reverse Voltage: max. 200V
Repetitive Peak Reverse Voltage: max. 250V
Repetitive Peak Forward Current: max. 1A
Small Surface Mount Package
For General Purpose Switching Applications
High Conductance
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standard for High Reliability
Mechanical Data
Case: SOT363
Case Material: Molded Plastic, "Green" Molding Compound,
Note 5. 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
e3
Orientation: See Diagram
Weight: 0.009 grams (approximate)
NEW PRODUCT
SOT363
Top View
Top View
Internal Schematic
Ordering Information
(Note 4)
Part Number
BAS21TW-7
Notes:
Case
SOT363
Packaging
3000/Tape & Reel
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html 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. For packaging details, go to our website at http”//www.diodes.com/products/packages.html.
Marking Information
XJK
YM
XJK = Product Type Marking Code
YM = Date Code Marking
Y =Year (ex: T = 2011)
M = Month (ex: 9 = September)
Date Code Key
Year
Code
Month
Code
Jan
1
2011
Y
Feb
2
2012
Z
Mar
3
Apr
4
2013
A
May
5
2014
B
Jun
6
2015
C
Jul
7
Aug
8
2016
D
Sep
9
2017
E
Oct
O
Nov
N
2018
F
Dec
D
BAS21TW
Document number: DS35389 Rev. 3 - 2
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April 2013
© Diodes Incorporated
BAS21TW
Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
Characteristic
Non-Repetitive Peak Reverse Voltage
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Forward Continuous Current (Note 5)
Non-Repetitive Peak Forward Surge Current
@ t = 50µs
@ t = 100µs
@ t = 10ms
Symbol
V
RM
V
RRM
V
RWM
V
R
V
R(RMS)
I
FM
I
FSM
Value
250
250
177
200
10
8
2
Unit
V
V
V
mA
A
NEW PRODUCT
Thermal Characteristics
Characteristic
Power Dissipation (Note 5)
Thermal Resistance Junction to Ambient Air (Note 5)
Operating and Storage Temperature Range
Symbol
P
D
R
θJA
T
J
, T
STG
Value
300
417
-65 to +150
Unit
mW
°C/W
°C
Electrical Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Characteristic
Reverse Breakdown Voltage (Note 6)
Forward Voltage
Reverse Current (Note 6)
Total Capacitance
Reverse Recovery Time
Notes:
Symbol
V
(BR)R
V
F
I
R
C
T
t
rr
Min
250
Max
1.05
1.25
100
100
5
50
Unit
V
V
nA
µA
pF
ns
Test Condition
I
R
= 100µA
I
F
= 100mA
I
F
= 200mA
V
R
= 200V
V
R
= 200V, T
J
= +150°C
V
R
= 6, f = 1.0MHz
V
R
= 6V, I
F
= 5mA
5. Part mounted on FR-4 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.
P
D
, POWER DISSIPATION (mW)
250
Note 5
I
F
, INSTANTANEOUS FORWARD CURRENT (mA)
300
1,000
100
T
A
= 150°C
200
150
10
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
T
A
= -55°C
100
1
50
0
0
25
50
75
100
125
150 175
T
A
, AMBIENT TEMPERATURE (
°
C)
Figure 1 Power Derating Curve, Total Package
0.1
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
V
F
, INSTANTANEOUS FORWARD VOLTAGE (V)
Figure 2 Typical Forward Characteristics, Per Element
0
BAS21TW
Document number: DS35389 Rev. 3 - 2
2 of 4
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April 2013
© Diodes Incorporated
BAS21TW
I
R
, INSTANTANEOUS REVERSE CURRENT (nA)
100,000
10,000
T
A
= 150°C
T
A
= 125°C
1.0
f = 1.0MHz
1,000
NEW PRODUCT
T
A
= 85°C
C
T
, TOTAL CAPACITANCE (pF)
0.8
0.6
100
T
A
= 25°C
T
A
= -55°C
0.4
10
1
0.1
0.2
50
100
150
200
250
300
V
R
, INSTANTANEOUS REVERSE VOLTAGE (V)
Figure 3 Typical Reverse Characteristics, Per Element
0
10
20
30
40
V
R
, DC REVERSE VOLTAGE (V)
Figure 4 Total Capacitance vs. Reverse Voltage, Per Element
0
0
Package Outline Dimensions
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
A
B C
H
K
M
J
D
F
L
SOT363
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
0°
8°
All Dimensions in mm
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
C2
C2
Z
G
C1
Y
X
Dimensions Value (in mm)
Z
2.5
G
1.3
X
0.42
Y
0.6
C1
1.9
C2
0.65
BAS21TW
Document number: DS35389 Rev. 3 - 2
3 of 4
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April 2013
© Diodes Incorporated
BAS21TW
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 unauthorized 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.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
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
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 © 2013, Diodes Incorporated
www.diodes.com
NEW PRODUCT
BAS21TW
Document number: DS35389 Rev. 3 - 2
4 of 4
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April 2013
© Diodes Incorporated
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