BAS21TM
Document number: DS35388 Rev. 3 - 2 1 of 4
www.diodes.com January 2012
© Diodes Incorporated
BAS21TM
ADVANCE INFORMATION
SURFACE MOUNT HIGH VOLTAGE 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
• Lead Free/RoHS Compliant (Note 1)
• "Green" Device (Notes 2 and 3)
Mechanical Data
• Case: SOT26
• 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 Copper Alloy
leadframe (Lead Free Plating). Solderable per MIL-STD-202,
Method 208
• Orientation: See Diagram
• Weight: 0.009 grams (approximate)
Ordering Information (Notes 3)
Part Number Case Packaging
BAS21TM-7 SOT26 3000/Tape & Reel
Notes: 1. No purposefully added lead.
2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com.
3. For packaging details, go to our website at http://www.diodes.com.
Marking Information
Date Code Key
Year 2011 2012 2013 2014 2015 2016 2017 2018
Code Y Z A B C D E F
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
SOT26
Top View
Internal Schematic
XJJ = Product Type Marking Code
YM = Date Code Marking
Y =Year (ex: Z = 2012)
M = Month (ex: 9 = September)
XJJ
YM
BAS21TM
Document number: DS35388 Rev. 3 - 2 2 of 4
www.diodes.com January 2012
© Diodes Incorporated
BAS21TM
ADVANCE INFORMATION
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Non-Repetitive Peak Reverse Voltage VRM 250 V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR 250 V
RMS Reverse Voltage VR
(
RMS
)
177 V
Forward Continuous Current (Note 4) IFM 200 mA
Average Rectified Output Current (Note 4) IO 250 mA
Non-Repetitive Peak Forward Surge Current @ t = 10
μ
s
@ t = 100μs
@ t = 10ms IFSM 10
6
2 A
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4) PD 300 mW
Thermal Resistance Junction to Ambient Air (Note 4) R
θ
JA 417 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Max Unit Test Condition
Reverse Breakdown Voltage (Note 5) V
(
BR
)
R 250 ⎯ V IR = 100μA
Forward Voltage VF ⎯
⎯ 1.0
1.25 V IF = 100mA
IF = 200mA
Reverse Current (Note 5) IR ⎯ 100
100 nA
μA VR = 200V
VR = 200V, TJ = 150°C
Total Capacitance CT ⎯ 5 pF
VR = 0, f = 1.0MHz
Reverse Recovery Time trr ⎯ 50 ns
IF = IR = 30mA,
Irr = 0.1 x IR, RL = 100Ω
Notes: 4. 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.5.
Short duration pulse test used to minimize self-heating effect.
0125 175
300
100
200
0
T , AMBIENT TEMPERA TURE ( C)
Fig. 1 Power Derating Curve, Total Package
A
°
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
25 100
50 75 150
50
150
250
Note 4
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
V , IN STANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics, Per Element
F
0.1
1
10
100
1,000
I, INS
T
AN
T
ANE
O
U
S
F
O
R
WA
R
D
C
U
R
R
EN
T
(mA)
F
BAS21TM
Document number: DS35388 Rev. 3 - 2 3 of 4
www.diodes.com January 2012
© Diodes Incorporated
BAS21TM
ADVANCE INFORMATION
0 50 100 150 200 250
V , INSTANTANEOUS REVERSE VOLTAGE (V)
Fig . 3 Typi cal R everse Char acteristics, Per Elem ent
R
0.1
1
10
100
1,000
10,000
100,000
I , INS
T
AN
T
ANE
O
U
S
R
EVE
R
SE
C
U
R
R
EN
T
(nA)
R
T = - ºC
A
55
T = 25ºC
A
T = 5ºC
A
8
T = 125ºC
A
T = 150ºC
A
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
110100
C , TOTAL CAPACIT ANCE (pF)
T
Package Outline Dimensions
Suggested Pad Layout
SOT26
Dim Min Max Typ
A 0.35 0.50 0.38
B 1.50 1.70 1.60
C 2.70 3.00 2.80
D ⎯ ⎯ 0.95
H 2.90 3.10 3.00
J 0.013 0.10 0.05
K 1.00 1.30 1.10
L 0.35 0.55 0.40
M 0.10 0.20 0.15
α 0° 8°
⎯
All Dimensions in mm
Dimensions Value (in mm)
Z 3.20
G 1.60
X 0.55
Y 0.80
C1 2.40
C2 0.95
A
M
JL
D
B C
H
K
X
Z
Y
C1
C2
C2
G
BAS21TM
Document number: DS35388 Rev. 3 - 2 4 of 4
www.diodes.com January 2012
© Diodes Incorporated
BAS21TM
ADVANCE INFORMATION
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 p roducts for any unintended or una uthorized 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 p atents 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 pro ducts and an y
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.
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www.diodes.com
