BAS19 / BAS20 / BAS21

Document number: DS12004 Rev. 22 - 2

1 of 4

www.diodes.com

June 2018

© Diodes Incorporated

BAS19 / BAS20 / BAS21

SURFACE MOUNT FAST SWITCHING DIODE

Features



Fast Switching Speed



Surface Mount Package Ideally Suited for Automated Insertion



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 Standards for High Reliability



PPAP Capable (Note 4)

Mechanical Data



Case: SOT23



Case Material: Molded Plastic.

UL Flammability Classification Rating 94V-0



Moisture Sensitivity: Level 1 per J-STD-020



Terminals: Solderable per MIL-STD-202, Method 208



Lead Free Plating (Matte Tin Finish Annealed over Alloy 42

Leadframe).



Polarity: See Diagram



Weight: 0.008 grams (Approximate)

Part Number

Qualification

Case

Packaging

BAS19-7-F

Commercial

SOT23

3,000/Tape & Reel

BAS20-7-F

Commercial

SOT23

3,000/Tape & Reel

BAS20-13-F

Commercial

SOT23

10,000/Tape & Reel

BAS20Q-13-F

Automotive

SOT23

10,000/Tape & Reel

BAS21-7-F

Commercial

SOT23

3,000/Tape & Reel

BAS21Q-7-F

Automotive

SOT23

3,000/Tape & Reel

BAS21-13-F

Commercial

SOT23

10,000/Tape & Reel

BAS21Q-13-F

Automotive

SOT23

10,000/Tape & Reel

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-

free/ 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. Automotive products are AEC-Q101 qualified and are PPAP capable. Automotive, AEC-Q101 and standard products are electrically and thermally the

same, except where specified. For more information, please refer to https://www.diodes.com/quality/.

5. For packaging details, go to our website at http://www.diodes.com/products/packages.html.

Marking Information

Date Code Key

Year

2000

2001

2002

…..

2016

2017

2018

2019

2020

2021

2022

2023

2024

Code

L

M

N

…..

D

E

F

G

H

I

J

K

L

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

SOT23

Top View

Internal Schematic

KXX = Product Type Marking Code

BAS19 Marking: KA8, KT3; KT2

BAS20 Marking: KT2, KT3

BAS21 Marking: KT3

YM = Date Code Marking

Y = Year (ex: F = 2018)

M = Month (ex: 9 = September)

KXX