BAS21

BAS19 / BAS20 / BAS21

Document overview

• Manufacturer or author: Diodes Incorporated
• PDF pages: 5

Technical content

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)
• The BAS20Q and BAS21Q are suitable for automotive applications requiring specific change control; these parts are AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/ Mechanical Data
• Package: SOT23
• Package 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) Ordering Information (Note 4) Orderable Part Number Package Packing Qty. Carrier BAS19-7-F SOT23 3,000 Tape & Reel BAS20-7-F SOT23 3,000 Tape & Reel BAS20-13-F SOT23 10,000 Tape & Reel BAS20Q-13-F SOT23 10,000 Tape & Reel BAS21-7-F SOT23 3,000 Tape & Reel BAS21Q-7-F SOT23 3,000 Tape & Reel BAS21-13-F SOT23 10,000 Tape & Reel BAS21Q-13-F 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. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes -packaging/. Marking Information Date Code Key Year 2000 - 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 Code L - L M N P R S T U V W 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; T3, KT2 BAS20 Marking: KT2, KT3, T3 BAS21 Marking: KT3, T3 YM = Date Code Marking A Bar around the Date Code Marking Denotes Assembly Site Y = Year (ex: L = 2024) M = Month (ex: 9 = September) KXX YM

Document number: DS12004 Rev. 24 - 2 2 of 5 www.diodes.com November 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. BAS19 / BAS20 / BAS21 Maximum Ratings (@TA = +25° C, unless otherwise specified.) Characteristic Symbol BAS19 BAS20 BAS21 Unit Repetitive Peak Reverse Voltage VRRM 120 200 250 V Working Peak Reverse Voltage DC Blocking Voltage VRWM VR 100 150 200 V RMS Reverse Voltage VR(RMS) 71 106 141 V Forward Continuous Current (Note 5) IFM 400 mA Average Rectified Output Current (Note 5) IO 200 mA Non-Repetitive Peak Forward Surge Current @ t = 1.0µs @ t = 1.0s IFSM 2.5 0.5 A Repetitive Peak Forward Surge Current (Note 5) IFRM 625 mA Thermal Characteristics Characteristic Symbol Value Unit Power Dissipation (Note 5) PD 250 mW Thermal Resistance Junction to Ambient Air (Note 5) RJA 500 °C/W Operating and Storage Temperature Range TJ, TSTG -55 to +150 °C Electrical Characteristics (@TA = +25° C, unless otherwise specified.) Characteristic Symbol Min Max Unit Test Condition BAS19 Reverse Breakdown Voltage (Note 6) BAS20 BAS21 V(BR)R 120 200 250 ⎯ V IR = 100µA Forward Voltage VF ⎯ 1.0

1.25 V IF = 100mA

IF = 200mA Reverse Current @ Rated DC Blocking Voltage (Note 6) IR ⎯ 100 nA µA TJ = +25C TJ = +100C Total Capacitance CT ⎯ 5.0 pF VR = 0, f = 1.0MHz Reverse Recovery Time trr ⎯ 50 ns IF = IR = 30mA, Irr = 0.1 x IR, RL = 100Ω Notes: 5. Part mounted on FR-4 board with one inch square, 2oz copper pad layout. IFM, IO are valid provided that terminals are kept at ambient temperature. 6. Short duration pulse test used to minimize self-heating effect.

Document number: DS12004 Rev. 24 - 2 3 of 5 www.diodes.com November 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. BAS19 / BAS20 / BAS21 0 120 160 200 250 200 150 40 80 100 T , AMBIENT TEMPERATURE ( C) Fig. 1 Power Derating Curve A ° P , POWER DISSIPATION (mW)D Note 4 0.001 0.01 0.1 0 0.40.2 0. 6 I , INSTANTANEOUS FORWARD CURRENT (A)F V , INSTANTANEOUS FORWARD VOLTAGE (V) Fig. 2 Typical Forward Characteristics F 0.8 1.21.0 1.4 0.0001 0.01 0.001 0.1 100 0 50 100 200150 250 V , INSTANTANEOUS REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics R I , INSTANTANEOUS REVERSE VOLTAGE ( A)R  0.0 0.5 1.0 1.5 3.5 3.0 2.5 2.0 4.0 0 10 20 4030 C , TOTAL CAPACITANCE (pF)T V , DC REVERSE VOLTAGE (V) Fig. 4 Total Capacitance vs. Reverse Voltage R Note 5

Document number: DS12004 Rev. 24 - 2 4 of 5 www.diodes.com November 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. BAS19 / BAS20 / BAS21 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. SOT23 J K1 K GAUGE PLANE 0.25 H L M All 7° A C B D GF a Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. SOT23 X Y Y1 C Dimensions Value (in mm) C 2.0 X 0.8 X1 1.35 Y 0.9 Y1 2.9 SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.890 1.00 0.975 K1 0.903 1.10 1.025 L 0.45 0.61 0.55 L1 0.25 0.55 0.40 M 0.085 0.150 0.110 a 0° 8° -- All Dimensions in mm

Document number: DS12004 Rev. 24 - 2 5 of 5 www.diodes.com November 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. BAS19 / BAS20 / BAS21 IMPORTANT NOTICE 1. DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON -INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. The Information contained herein is for informational purpose only and is provided only to il lustrate the operation of Diodes ’ products described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who d esign with Diodes’ products. Diodes’ products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for (a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of Diodes’ products for their intended applications, (c) ensuring their applications, which incorporate Diodes’ products, comply the applicable legal and regulatory requirements as well as safety and functional-safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality control techniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to mini mize the risks associated with their applications. 3. Diodes assumes no liability for any application -related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities a ssociated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against all damages and liabilities. 4. Products described herein may be covered by one or more United States, international or foreign patents and pending patent applications. Product names and markings noted herein may also be covered by one or more United States, international or fore ign trademarks and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties (including third parties whose products and services may be described in this document or on Diodes’ website) under this document. 5. Diodes’ products are provided subject to Diodes’ Standard Terms and Conditions of Sale (https://www.diodes.com/about/company/terms-and-conditions/terms-and-conditions-of-sales/) or other applicable terms. This document does not alter or expan d the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. 6. Diodes’ products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sale is prohibited under any applicable laws and regulations. Should customers or users use Diodes ’ products in contravention of any applicable laws or regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any damages, losses or penalties arising in connection therewith or as a result ther eof, and (b) indemnify and hold Diodes and its representatives and agents harmless against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with the applicable laws and regulations, as well as any unintended or unauthorized application. 7. While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may contain technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this document is error -free and Diodes is under no obligation to update or otherwise correct this information. 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