BAS21LSYL Equivalent & Substitute Parts

Part Overview

The BAS21LSYL is a general-purpose rectifier diode manufactured by Nexperia USA Inc., designed for surface mount applications in the SOD-882 package. This component operates at 200 V DC reverse voltage with a 250 mA average rectified current rating and features fast recovery characteristics with a 50 ns reverse recovery time. The BAS21LSYL is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance across voltage, current, and switching characteristics while meeting packaging and compliance requirements.

Substiute Parts

BAS21LSYL

Nexperia USA Inc.In Stock: 901BAS21LSYL Datasheet

Current PartRFQ

BAS21LS-QYL

Nexperia USA Inc.In Stock: 3720BAS21LS-QYL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS21LSYL is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 250 mA
• Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 200 mA
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: 100 nA @ 200 V
• Capacitance @ Vr, F: 2 pF @ 0V, 1MHz

Mechanical Equivalence Criteria:

• Package / Case: SOD-882
• Mounting Type: Surface Mount
• Supplier Device Package: DFN1006BD-2

The BAS21LS-QYL meets all specified electrical and mechanical parameters and is classified as an active product with manufacturer qualification for automotive applications (AEC-Q100).

Parameter Comparison

Engineering Selection Recommendations

The BAS21LS-QYL is the direct substitute for the obsolete BAS21LSYL. Both components share identical electrical specifications and mechanical packaging, ensuring pin-for-pin and functional compatibility in existing circuit designs.

Product Status Advantage: The BAS21LS-QYL is classified as an active product with current manufacturing support, whereas the BAS21LSYL is obsolete. This transition eliminates supply chain risk and ensures long-term availability for production and design updates.

Compliance and Qualification: The BAS21LS-QYL carries AEC-Q100 automotive qualification, indicating enhanced reliability screening and process controls. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and consumer applications.

Packaging Consideration: The BAS21LS-QYL is supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount assembly operations. The BAS21LSYL packaging format is not specified in the provided data.

Frequently Asked Questions (FAQ)

Q: Can the BAS21LS-QYL be used as a direct replacement for the BAS21LSYL in existing designs?

A: Yes. The BAS21LS-QYL is electrically and mechanically equivalent to the BAS21LSYL across all specified parameters, including voltage rating, current capacity, forward voltage drop, reverse recovery time, and package dimensions. No circuit modifications are required.

Q: What is the primary reason to transition from BAS21LSYL to BAS21LS-QYL?

A: The BAS21LSYL is classified as obsolete, indicating discontinued manufacturing. The BAS21LS-QYL is an active product with ongoing production support, ensuring reliable supply for new designs and production continuity.

Q: Are there any electrical performance differences between these parts?

A: No. Both components specify identical electrical characteristics: 200 V reverse voltage, 250 mA average rectified current, 1.25 V forward voltage at 200 mA, 50 ns reverse recovery time, and 100 nA reverse leakage current at 200 V.

Q: What packaging formats are available for the BAS21LS-QYL?

A: The BAS21LS-QYL is supplied in Tape & Reel (TR) format, which is optimized for automated surface mount assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the BAS21LSYL and BAS21LS-QYL are ROHS3 compliant and REACH unaffected. The BAS21LS-QYL additionally carries AEC-Q100 automotive qualification.

Q: Is the SOD-882 package footprint identical between these parts?

A: Yes. Both components use the SOD-882 package with DFN1006BD-2 supplier device package designation, ensuring identical PCB footprints and assembly compatibility.