© Won-Top Electronics Co., Ltd.

www.wontop.com

Revision: October, 2018

1

Pb

Features



Dual Diode Com. Anode, Cathode, and Series

L



Fast Switching

A



Surface Mount Package Ideally Suited for

Automatic Insertion



For General Purpose Switching Applications

B

C



Plastic Material – UL Recognition Flammability

Classification 94V-0

M

E

D

H

Mechanical Data



Case: SOT-23, Molded Plastic

K



Terminals: Plated Leads Solderable per

J

MIL-STD-202, Method 208

G



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

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

mA

Non-Repetitive Peak Forward Surge Current, 60Hz

IFSM

625

mA

Operating and Storage Temperature Range

TJ, TSTG

-55 to +150

°C

Thermal Characteristics

Characteristic

Symbol

Value

Unit

Power Dissipation (Note 1)

PD

250

mW

Thermal Resistance, Junction to Ambient (Note 1)

RθJA

500

°C/W

Note: 1. Mounted on FR-4 PC board with 25.4 x 25.4mm copper pads.

BAS21A / C / S

SURFACE MOUNT FAST SWITCHING DIODE

WON-TOP ELECTRONICS

®

SOT-23

Dim

Min

Max

A

0.30

0.50

B

1.19

1.40

C

2.10

2.50

D

0.89

1.05

E

0.45

0.61

G

1.78

2.05

H

2.65

3.05

J

0.013

0.15

K

0.89

1.10

L

0.45

0.61

M

0.076

0.178

All Dimensions in mm

TOP VIEW

BAS21A

TOP VIEW

BAS21C

TOP VIEW

BAS21S