BAV99T Equivalent & Substitute Parts

Part Overview

The BAV99T is a general-purpose diode array manufactured by onsemi, configured as 1 pair series connection with a maximum reverse voltage of 85 V and average rectified current of 75 mA per diode. The device is packaged in SOT-523 surface mount configuration and operates with a maximum junction temperature of 125°C.

The BAV99T has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

BAV99T

onsemiIn Stock: 41464BAV99T Datasheet

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SBAV99WT1G

onsemiIn Stock: 75483SBAV99WT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAV99T is determined by the following critical parameters:

Functional Equivalence Criteria:

• Diode configuration must be 1 pair series connection
• Technology classification must be standard or compatible rectifier type
• Mounting type must be surface mount

Electrical Performance Criteria:

• Maximum reverse voltage (Vr) must equal or exceed 85 V
• Average rectified current (Io) per diode must equal or exceed 75 mA
• Forward voltage (Vf) characteristics must be compatible with circuit requirements
• Reverse recovery time (trr) must support circuit switching performance
• Reverse leakage current must be acceptable for application requirements

Environmental and Compliance Criteria:

• Operating temperature range must accommodate junction temperatures up to 125°C
• Moisture sensitivity level and REACH compliance status must be maintained

The SBAV99WT1G meets these substitution criteria with enhanced electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SBAV99WT1G is the designated substitute for the obsolete BAV99T. This substitution is supported by the following factors:

Product Status: The SBAV99WT1G maintains active product status with onsemi, ensuring ongoing availability and manufacturing support. The BAV99T obsolete status necessitates transition to an alternative component.

Electrical Performance: The SBAV99WT1G provides enhanced electrical specifications across all critical parameters. The maximum reverse voltage increases from 85 V to 100 V, average rectified current increases from 75 mA to 215 mA, and maximum junction temperature increases from 125°C to 150°C. These improvements provide design margin and support broader application requirements.

Compliance and Certifications: The SBAV99WT1G carries AEC-Q101 automotive qualification and ROHS3 compliance status, indicating qualification for automotive and regulated applications. Both components maintain REACH unaffected status and unlimited moisture sensitivity level (MSL 1).

Package Consideration: The SBAV99WT1G uses SC-70 (SOT-323) packaging instead of SOT-523. This represents a package change requiring PCB layout modification. The SC-70 package is a standard industry format with widespread design tool support.

Frequently Asked Questions (FAQ)

Q: Can the SBAV99WT1G directly replace the BAV99T without circuit modification?

A: The SBAV99WT1G is electrically compatible with the BAV99T for applications operating within the BAV99T electrical specifications. However, the package change from SOT-523 to SC-70 (SOT-323) requires PCB layout modification. Pin configuration and footprint differ between these packages.

Q: What are the key electrical differences between BAV99T and SBAV99WT1G?

A: The SBAV99WT1G provides higher maximum reverse voltage (100 V vs. 85 V), higher average rectified current (215 mA vs. 75 mA), higher maximum junction temperature (150°C vs. 125°C), and lower reverse leakage current (1 µA @ 100 V vs. 2 µA @ 75 V). Forward voltage increases slightly from 1 V @ 50 mA to 1.25 V @ 150 mA.

Q: Is the SBAV99WT1G suitable for automotive applications?

A: Yes. The SBAV99WT1G carries AEC-Q101 automotive qualification and ROHS3 compliance, making it suitable for automotive applications. The BAV99T does not carry automotive qualification.

Q: What is the impact of the package change from SOT-523 to SC-70?

A: The package change requires PCB footprint redesign. SOT-523 and SC-70 (SOT-323) are different physical packages with different pin configurations and land patterns. Design tool libraries and manufacturing processes must be updated to accommodate the new package.

Q: Are both components from the same manufacturer?

A: Yes. Both BAV99T and SBAV99WT1G are manufactured by onsemi, ensuring consistent quality standards and design philosophy.

Q: What is the reverse recovery time difference and its significance?

A: The SBAV99WT1G has a reverse recovery time of 6 ns compared to 4 ns for the BAV99T. This 2 ns difference is within typical circuit tolerance for general-purpose rectifier applications and does not prevent substitution in standard switching applications.

Q: Can I use BAV99T in new designs?

A: No. The BAV99T is obsolete and not recommended for new designs. The SBAV99WT1G should be used for all new applications requiring this diode array configuration.