Lead-free Green
DS30617 Rev. 6 - 2
1 of 3
BAS20DW-BAS21DW
www.diodes.com
Diodes Incorporated
BAS20DW-BAS21DW
SURFACE MOUNT LOW LEAKAGE DIODE
Mechanical Data
A
B C
J
D
H
K
F
M
L
TOP VIEW
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Fast Switching Speed
Surface Mount Package Ideally Suited for Automatic
Insertion
For General Purpose Switching Applications
High Conductance
Lead Free By Design/RoHS Compliant (Note 3)
"Green Device" (Note 4)
NEW
P
RODUCT
Case: SOT-363, Molded Plastic
Case Material: Molded Plastic, "Green" Molding
Compound. UL Flammability Classification Rating 94V-0
Moisture sensitivity: Level 1 per J-STD-020C
Terminal Connections: See Diagram
Terminals: Finish
Matte Tin annealed over Alloy 42
leadframe. Solderable per MIL-STD-202, Method 208
BAS20DW Marking: KT2 or KT3 (See Page 3)
BAS21DW Marking: KT3 (See Page 3)
Marking & Type Code Information: See Page 3
Ordering Information: See Page 3
Weight: 0.003 grams (approx.)
Characteristic
Symbol
Value
Unit
Power Dissipation (Note 1)
P
d
200
mW
Thermal Resistance Junction to Ambient Air (Note 1)
R
qJA
625
C/W
Features
Note: 1. 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.
2. Short duration test pulse used to minimize self-heating effect.
3. No purposefully added lead.
4. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
SOT-363
Dim
Min
Max
A
0.10
0.30
B
1.15
1.35
C
2.00
2.20
D
0.65 Nominal
F
0.30
0.40
H
1.80
2.20
J
0.10
K
0.90
1.00
L
0.25
0.40
M
0.10
0.25
a
0
8
All Dimensions in mm
Characteristic
Symbol
BAS20DW
BAS21DW
Unit
Repetitive Peak Reverse Voltage
V
RRM
200
250
V
Working Peak Reverse Voltage
DC Blocking Voltage
V
RWM
V
R
150
200
V
RMS Reverse Voltage
V
R(RMS)
106
141
V
Forward Continuous Current
I
FM
400
mA
Average Rectified Output Current
I
O
200
mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0
ms
@ t = 1.0s
I
FSM
2.5
0.5
A
Repetitive Peak Forward Surge Current
I
FRM
625
mA
Operating and Storage Temperature Range
T
j
, T
STG
-65 to +150
C
Characteristic
Symbol
Min
Max
Unit
Test Condition
Reverse Breakdown Voltage (Note 2) BAS20DW
BAS21DW
V
(BR)R
200
250
V
I
R
= 100
mA
Forward Voltage (Note 2)
V
F
1.0
1.25
V
I
F
= 100mA
I
F
= 200mA
Reverse Current
@ Rated DC Blocking Voltage (Note 2)
I
R
100
15
nA
mA
T
j
= 25
C
T
j
= 100
C
Total Capacitance
C
T
5.0
pF
V
R
= 0, f = 1.0MHz
Reverse Recovery Time
t
rr
50
ns
I
F
= I
R
= 30mA,
I
rr
= 0.1 x I
R
, R
L
= 100
W
Thermal Characteristics, Total Package
@ T
A
= 25
C unless otherwise specified
SPICE MODEL: BAS20DW BAS21DW
DS30617 Rev. 6 - 2
2 of 3
BAS20DW-BAS21DW
www.diodes.com
-50
0
50
100
150
250
200
150
50
100
0
T , AMBIENT TEMPERATURE ( C)
Fig. 1, Derating Curve - Total
A
P
,
POWER
D
ISSIP
A
TION
(mW)
d
NEW
P
RODUCT
0.0001
0.01
0.001
0.1
1
10
100
0
50
100
200
150
250
V , INSTANTANEOUS REVERSE VOLTAGE (V)
Fig. 3 Typical Reverse Characteristics
R
T = -40C
A
T = 25C
A
T = 75C
A
T = 125C
A
T = 150C
A
T = 0C
A
0.0
0.5
1.0
1.5
3.5
3.0
2.5
2.0
4.0
0
10
20
40
30
C
,
T
O
T
A
L
C
AP
ACIT
ANCE
(pF)
T
V , REVERSE VOLTAGE (V)
Fig. 4 Typical Capacitance vs. Reverse Voltage
R
f = 1.0MHz
0.001
0.01
0.1
1
0
0.4
0.2
0. 6
I
,
INST
ANT
A
NE
O
US
F
O
R
W
ARD
CURRENT
(A)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
0.8
1.2
1.0
1.4
T = 0C
A
T = 150C
A
T = -40C
A
T = 25C
A
T = 75C
A
T = 125C
A
DS30617 Rev. 6 - 2
3 of 3
BAS20DW-BAS21DW
www.diodes.com
NEW
P
RODUCT
IMPORTANT NOTICE
LIFE SUPPORT
www.diodes.com
Diodes, Inc. and its subsidiaries reserve the right to make changes without further notice to any product herein to make corrections, modifications, enhance-
ments, improvements, or other changes. Diodes, Inc. does not assume any liability arising out of the application or use of any product described herein;
neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages.
The products located on our website at
are not recommended for use in life support systems where a failure or malfunction of the
component may directly threaten life or cause injury without the express written approval of Diodes Incorporated.
XXX YM
XXX= Product Type Marking Code (See Page 1)
YM = Date Code Marking
Y = Year (ex: S = 2005)
M = Month (ex: 9 = September)
Date Code Key
Year
2005
2006
2007
2008
2009
Code
S
T
U
V
W
Month
Jan
Feb
March
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Code
1
2
3
4
5
6
7
8
9
O
N
D
Marking Information
Device
Packaging
Shipping
BAS20DW-7
SOT-363
3000/Tape & Reel
BAS21DW-7
SOT-363
3000/Tape & Reel
Ordering Information
Notes:
5. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
(Note 5)
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