SI8920AC-APR Equivalent & Substitute Parts

Part Overview

The SI8920AC-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. Substitute parts are necessary to support active product lines and to provide design flexibility with improved product status classifications.

Substiute Parts

SI8920AC-APR

Skyworks Solutions Inc.In Stock: 1154SI8920AC-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

Substitution eligibility for the SI8920AC-APR is determined by the following criteria:

Manufacturer Consistency: All substitute parts must be manufactured by Skyworks Solutions Inc. to ensure design continuity and supply chain reliability.

Functional Classification: Substitute parts must be classified as Isolation ICs within the Linear, Amplifiers category and support the same applications: Inverters, Power Supplies, and UPS systems.

Automotive Compliance: All substitute parts must maintain Automotive grade classification and AEC-Q100 qualification to meet automotive industry standards.

Mounting and Packaging: Substitute parts must be surface-mount components supplied in Tape & Reel packaging format.

The SI8921AD-AS4R and SI8921BD-AS4R meet all substitution criteria. Both parts are active products with improved product status compared to the SI8920AC-APR, feature identical automotive qualification and grade specifications, and maintain compatibility with the same application domains. The primary difference between these substitutes and the main part is the package configuration: both substitutes use 8-SOIC packaging instead of 8-DIP Gull Wing, and both feature improved moisture sensitivity levels (MSL 2A versus MSL 3).

Parameter Comparison

Engineering Selection Recommendations

For Active Product Development: The SI8921AD-AS4R and SI8921BD-AS4R are both classified as Active products and are suitable for new design implementations. These parts provide improved product lifecycle status compared to the SI8920AC-APR.

Compliance and Certification: All three parts maintain identical automotive-grade classification and AEC-Q100 qualification, ensuring compliance with automotive industry standards across all options.

Moisture Sensitivity Considerations: The substitute parts feature MSL 2A (4 Weeks) compared to the main part's MSL 3 (168 Hours). This represents improved moisture handling characteristics, reducing storage and handling constraints during manufacturing and assembly processes.

Package Transition: Selection between the main part and substitutes requires evaluation of printed circuit board layout compatibility. The main part uses 8-DIP Gull Wing packaging, while both substitutes use 8-SOIC packaging. PCB footprint redesign is necessary when transitioning between these package types.

Inventory Availability: Current stock levels support all three options: SI8920AC-APR (1092 Pcs), SI8921AD-AS4R (934 Pcs), and SI8921BD-AS4R (1103 Pcs).

Frequently Asked Questions (FAQ)

Q: Can SI8921AD-AS4R and SI8921BD-AS4R be used as direct replacements for SI8920AC-APR without PCB modifications?

A: No. While both substitute parts maintain functional and compliance equivalence, they use different package configurations (8-SOIC versus 8-DIP Gull Wing). PCB footprint redesign is required for component placement and soldering.

Q: What is the significance of the product status change from "Not For New Designs" to "Active"?

A: Active product status indicates that the substitute parts are supported for new design implementations with full manufacturer backing. The SI8920AC-APR's "Not For New Designs" status indicates that Skyworks Solutions Inc. recommends transitioning to alternative solutions for new development projects.

Q: Are the automotive qualifications identical across all three parts?

A: Yes. All three parts maintain Automotive grade classification and AEC-Q100 qualification, ensuring equivalent compliance with automotive industry standards.

Q: What does the MSL rating difference mean for manufacturing?

A: MSL 2A (4 Weeks) provides a longer allowable exposure window to moisture compared to MSL 3 (168 Hours). The substitute parts offer improved tolerance for storage and handling conditions prior to assembly.

Q: Are SI8921AD-AS4R and SI8921BD-AS4R functionally identical?

A: Both substitute parts share identical specifications across all provided parameters: manufacturer, category, type, applications, grade, qualification, mounting type, packaging format, and MSL rating. Selection between these two substitutes should be based on application-specific requirements not detailed in the provided parameters.

Q: What applications are supported by these isolation ICs?

A: All three parts are designed for Inverters, Power Supplies, and UPS (Uninterruptible Power Supply) applications within automotive-grade environments.