BAS521,315 Equivalent & Substitute Parts

Part Overview

The BAS521,315 is a general-purpose fast recovery diode manufactured by Nexperia USA Inc., rated for 300 V DC reverse voltage and 250 mA average rectified current in a surface mount SOD-523 package. This component is classified as Active and complies with RoHS3 and REACH standards. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and functional category.

Substiute Parts

BAS521,315

Nexperia USA Inc.In Stock: 9103BAS521,315 Datasheet

Current PartRFQ

BAS521,115

Nexperia USA Inc.In Stock: 496223BAS521,115 Datasheet

Parametric EquivalentRFQ

BAS521,135

Nexperia USA Inc.In Stock: 27296BAS521,135 Datasheet

Parametric EquivalentRFQ

BAS521-7

Diodes IncorporatedIn Stock: 155200BAS521-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BAS521,315 are identified based on strict electrical and mechanical parameter matching. The substitution logic is based on the following criteria:

Parametric Equivalents maintain identical specifications across all critical parameters: 300 V reverse voltage rating, 250 mA average rectified current, 1.1 V forward voltage at 100 mA, 50 ns reverse recovery time, 150 nA reverse leakage current at 250 V, and 5 pF capacitance. These parts are functionally interchangeable within the same circuit application and share the SOD-523 package footprint.

Similar Parts meet the same electrical specifications but may differ in packaging format or operating temperature range. These parts maintain compatibility with the core electrical performance requirements while offering alternative sourcing options.

The following parameters determine substitution eligibility:

• Voltage - DC Reverse (Vr) (Max): 300 V
• Current - Average Rectified (Io): 250 mA
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 100 mA
• Reverse Recovery Time (trr): 50 ns
• Package / Case: SC-79, SOD-523
• Mounting Type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

BAS521,115 (Nexperia USA Inc.) is a parametric equivalent suitable for direct substitution. All electrical specifications match the BAS521,315 identically. This part is available in Cut Tape and Digi-Reel packaging formats, matching the original part's packaging options. Both parts maintain Active product status and RoHS3 compliance.

BAS521,135 (Nexperia USA Inc.) is a parametric equivalent with identical electrical specifications. This part is supplied in Tape & Reel format, differing only in packaging presentation. Electrical performance and compliance certifications are equivalent to the BAS521,315.

BAS521-7 (Diodes Incorporated) is a similar part manufactured by an alternative supplier. All electrical parameters match the BAS521,315 specification. This part is supplied in Tape & Reel format and maintains RoHS3 compliance and MSL 1 rating. The operating temperature range extends to -65°C, providing broader temperature coverage than the BAS521,315.

Selection among these substitutes depends on packaging requirements, supplier availability, and sourcing preferences. All parts maintain electrical equivalence and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can BAS521,115 replace BAS521,315 in existing designs?

A: Yes. BAS521,115 is a parametric equivalent with identical electrical specifications, including 300 V reverse voltage, 250 mA current rating, 1.1 V forward voltage, and 50 ns reverse recovery time. Both parts use the SOD-523 package footprint and are surface mount compatible.

Q: What is the difference between BAS521,135 and BAS521,315?

A: The electrical specifications are identical. The primary difference is packaging format: BAS521,135 is supplied in Tape & Reel format, while BAS521,315 is available in Cut Tape and Digi-Reel formats. Both maintain the same SOD-523 footprint and electrical performance.

Q: Is BAS521-7 from Diodes Incorporated compatible with BAS521,315?

A: Yes. BAS521-7 meets all electrical specifications of the BAS521,315, including voltage, current, and recovery time parameters. The part is manufactured by a different supplier but maintains the same SOD-523 package and electrical performance. Operating temperature range extends to -65°C minimum.

Q: Do all substitute parts have the same moisture sensitivity rating?

A: Yes. All listed substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. BAS521,115, BAS521,135, and BAS521-7 are all RoHS3 compliant, matching the compliance status of the BAS521,315.

Q: Can packaging format affect circuit performance?

A: No. Packaging format (Cut Tape, Digi-Reel, or Tape & Reel) does not affect electrical performance. The SOD-523 footprint remains consistent across all parts, ensuring mechanical and electrical compatibility on the PCB.

Q: Which substitute part offers the widest operating temperature range?

A: BAS521-7 specifies an operating temperature range of -65°C to 150°C, compared to the BAS521,315 maximum of 150°C. This provides extended low-temperature capability for applications requiring broader thermal performance.