SI8920BC-APR Equivalent & Substitute Parts

Part Overview

The SI8920BC-APR is an automotive-grade isolation IC designed for inverters, power supplies, and uninterruptible power supply (UPS) applications. Manufactured by Skyworks Solutions Inc., this component features an 8-DIP Gull Wing package configuration and meets AEC-Q100 automotive qualification standards. The part is classified as Not For New Designs, indicating that alternative solutions should be evaluated for new development projects. Identifying equivalent substitute parts ensures design flexibility and supply chain continuity while maintaining functional and compliance requirements.

Substiute Parts

SI8920BC-APR

Skyworks Solutions Inc.In Stock: 1233SI8920BC-APR Datasheet

Current PartRFQ

SI8921AD-AS4R

Skyworks Solutions Inc.In Stock: 1018SI8921AD-AS4R Datasheet

MFR RecommendedRFQ

SI8921BD-AS4R

Skyworks Solutions Inc.In Stock: 1118SI8921BD-AS4R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI8920BC-APR are qualified based on the following criteria:

Functional Equivalence: All substitute parts maintain the same isolation IC functionality for inverters, power supplies, and UPS applications.

Automotive Compliance: All substitutes carry AEC-Q100 qualification and automotive-grade designation, ensuring compliance with automotive reliability and environmental standards.

Manufacturer Consistency: All substitutes are manufactured by Skyworks Solutions Inc., maintaining design and quality consistency within the same product family.

Application Compatibility: All substitutes support identical application domains (Inverters, Power Supplies, UPS).

Surface Mount Technology: All substitutes utilize surface mount mounting technology, compatible with modern PCB assembly processes.

The primary distinction between the main part and substitutes lies in package configuration and product status. The SI8920BC-APR uses an 8-DIP Gull Wing package, while substitute parts utilize 8-SOIC packaging. Both package types are surface-mount configurations suitable for automated assembly.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: Select either SI8921AD-AS4R or SI8921BD-AS4R. Both parts carry Active product status and are suitable for new development. These substitutes provide improved moisture sensitivity ratings (MSL 2A versus MSL 3), reducing handling and storage requirements.

For Existing Designs Using SI8920BC-APR: The SI8920BC-APR remains functional for legacy applications. However, PCB layout modifications are required to accommodate the package transition from 8-DIP Gull Wing to 8-SOIC configuration.

Compliance Assurance: All three parts maintain AEC-Q100 qualification and automotive-grade designation, ensuring continued compliance with automotive reliability standards across substitution scenarios.

Inventory Considerations: SI8921BD-AS4R offers the highest current inventory (1103 Pcs), followed by SI8921AD-AS4R (934 Pcs), providing supply chain flexibility for production planning.

Frequently Asked Questions (FAQ)

Q: Can SI8921AD-AS4R or SI8921BD-AS4R be used as direct replacements for SI8920BC-APR?

A: Functional substitution is supported. However, package configuration differs: SI8920BC-APR uses 8-DIP Gull Wing, while substitutes use 8-SOIC. PCB footprint redesign is required for physical implementation.

Q: What is the difference between SI8921AD-AS4R and SI8921BD-AS4R?

A: Both parts share identical electrical specifications, applications, and compliance certifications. The designation difference (AD versus BD) reflects internal device configuration variants. Both are qualified substitutes for the main part.

Q: Why does SI8920BC-APR have "Not For New Designs" status?

A: This designation indicates the part is in mature or end-of-life phase. Skyworks Solutions recommends SI8921AD-AS4R and SI8921BD-AS4R for new development projects to ensure long-term product availability and support.

Q: Are there moisture sensitivity differences between the main part and substitutes?

A: Yes. SI8920BC-APR has MSL 3 (168 Hours), while both substitutes have MSL 2A (4 Weeks). Lower MSL ratings reduce moisture-related handling and storage constraints.

Q: Do all parts meet automotive qualification requirements?

A: Yes. SI8920BC-APR, SI8921AD-AS4R, and SI8921BD-AS4R all carry AEC-Q100 qualification and automotive-grade designation, meeting automotive reliability and environmental standards.

Q: What PCB design considerations apply when substituting packages?

A: The transition from 8-DIP Gull Wing to 8-SOIC requires footprint modification. Both are surface-mount packages with different lead configurations and spacing. Consult package datasheets for precise dimensional specifications and PCB layout requirements.

Q: Which substitute part should be selected for new production?

A: Both SI8921AD-AS4R and SI8921BD-AS4R are qualified selections. SI8921BD-AS4R offers higher current inventory availability. Selection between the two should be based on internal device configuration requirements specific to your application.