®
BAS21A / C / S
SURFACE MOUNT FAST SWITCHING DIODE
WON-TOP ELECTRONICS
Pb
Features
Dual Diode Com. Anode, Cathode, and Series
L
Fast Switching
Surface Mount Package Ideally Suited for
Automatic Insertion
A
For General Purpose Switching Applications
Plastic Material – UL Recognition Flammability
Classification 94V-0
B
C
M
E
D
SOT-23
Min
H
G
Dim
A
Max
0.50
1.40
2.50
1.05
0.61
2.05
3.05
0.15
1.10
0.61
0.178
0.30
1.19
2.10
0.89
0.45
1.78
2.65
0.013
0.89
0.45
0.076
Mechanical Data
B
Case: SOT-23, Molded Plastic
Terminals: Plated Leads Solderable per
MIL-STD-202, Method 208
K
C
D
J
E
G
H
Polarity: See Diagrams Below
Weight: 0.008 grams (approx.)
Marking: Device Code, See Page 3
Mounting Position: Any
Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 4
J
K
L
M
All Dimensions in mm
TOP VIEW
BAS21A
TOP VIEW
BAS21C
TOP VIEW
BAS21S
Maximum Ratings @TA=25°C unless otherwise specified
Characteristic
Symbol
Value
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
250
V
Forward Continuous Current
IF
200
625
mA
mA
°C
Non-Repetitive Peak Forward Surge Current, 60Hz
Operating and Storage Temperature Range
IFSM
TJ, TSTG
-55 to +150
Thermal Characteristics
Characteristic
Symbol
Value
Unit
Power Dissipation (Note 1)
PD
250
500
mW
Thermal Resistance, Junction to Ambient (Note 1)
RθJA
°C/W
Note: 1. Mounted on FR-4 PC board with 25.4 x 25.4mm copper pads.
© Won-Top Electronics Co., Ltd.
Revision: October, 2018
www.wontop.com
1