SI8920BC-IP Equivalent & Substitute Parts

Part Overview

The SI8920BC-IP is an isolation IC manufactured by Skyworks Solutions Inc., designed for inverters, power supplies, and uninterruptible power supply (UPS) applications. This component features an 8-DIP gull wing surface mount package and operates as an isolation device within linear amplifier category applications.

The SI8920BC-IP carries a product status of "Not For New Designs," indicating that Skyworks Solutions Inc. has transitioned this component out of active development. For new circuit designs and ongoing production requirements, equivalent substitute parts with active product status are available to ensure long-term supply chain reliability and design continuity.

Substiute Parts

SI8920BC-IP

Skyworks Solutions Inc.In Stock: 1226SI8920BC-IP Datasheet

Current PartRFQ

SI8921AD-IS4

Skyworks Solutions Inc.In Stock: 2768SI8921AD-IS4 Datasheet

MFR RecommendedRFQ

SI8921BD-IS4

Skyworks Solutions Inc.In Stock: 1385SI8921BD-IS4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI8920BC-IP is determined by the following critical parameters:

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

Manufacturer Consistency: All substitute parts are manufactured by Skyworks Solutions Inc., ensuring design compatibility and technical support continuity.

Electrical Classification: All parts operate within the Linear, Amplifiers category and serve as isolation devices with equivalent electrical performance characteristics.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original component.

Active Product Status: The substitute parts SI8921AD-IS4 and SI8921BD-IS4 carry active product status, providing long-term availability and design support for new applications.

The primary difference between the main part and substitutes lies in the package configuration: the SI8920BC-IP uses an 8-DIP gull wing package, while the substitute parts employ an 8-SOIC package format. Both package types are surface mount configurations suitable for modern PCB assembly processes.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs: The SI8920BC-IP remains suitable for maintenance and repair of existing systems where the 8-DIP gull wing package is already integrated into the PCB layout. Current inventory of 1163 pieces supports ongoing production requirements for established applications.

For New Design Implementation: The SI8921AD-IS4 and SI8921BD-IS4 are the designated alternatives for new circuit designs. Both parts carry active product status, ensuring manufacturer support, long-term availability, and compliance with current design standards. The SI8921AD-IS4 provides 2709 pieces in stock, while the SI8921BD-IS4 offers 1341 pieces, both supporting immediate procurement needs.

Package Transition Consideration: Substitution requires PCB layout modification due to the package change from 8-DIP gull wing to 8-SOIC format. The 8-SOIC package (0.295" width, 7.50mm) is a standard surface mount configuration compatible with contemporary assembly equipment and processes.

Compliance Verification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, eliminating regulatory barriers to substitution. Export classification (EAR99) remains consistent across all parts.

Moisture Sensitivity Adjustment: The substitute parts feature MSL 2A (4 Weeks) compared to the original MSL 3 (168 Hours). This represents improved moisture tolerance, reducing handling and storage constraints during manufacturing and logistics operations.

Frequently Asked Questions (FAQ)

Q: Can SI8921AD-IS4 or SI8921BD-IS4 directly replace SI8920BC-IP without PCB modification?

A: No. The SI8920BC-IP uses an 8-DIP gull wing package, while the substitute parts use an 8-SOIC package. PCB footprint redesign is required. However, both package types are surface mount configurations, and the electrical functionality remains equivalent.

Q: What is the primary reason for transitioning from SI8920BC-IP to SI8921AD-IS4 or SI8921BD-IS4?

A: The SI8920BC-IP carries "Not For New Designs" status, indicating end-of-life transition by the manufacturer. The SI8921 series parts are active products with ongoing manufacturer support and guaranteed long-term availability.

Q: Are there electrical performance differences between SI8920BC-IP and the substitute parts?

A: Both the SI8921AD-IS4 and SI8921BD-IS4 are designed for identical applications (inverters, power supplies, UPS) and maintain the same isolation IC functionality. Electrical performance is equivalent within the specified application scope.

Q: What is the difference between SI8921AD-IS4 and SI8921BD-IS4?

A: Both parts share identical package, functionality, and compliance specifications. The primary distinction is the HTSUS code: SI8921AD-IS4 uses 8542.39.0001, while SI8921BD-IS4 uses 8542.33.0001. This difference reflects tariff classification and does not affect technical performance or substitution suitability.

Q: How does the moisture sensitivity level change affect component handling?

A: The substitute parts feature MSL 2A (4 Weeks) compared to SI8920BC-IP MSL 3 (168 Hours). MSL 2A provides extended moisture tolerance, reducing bake-out requirements and simplifying storage and handling procedures during manufacturing operations.

Q: Are the substitute parts RoHS and REACH compliant?

A: Yes. Both SI8921AD-IS4 and SI8921BD-IS4 are ROHS3 compliant and REACH unaffected, matching the compliance profile of the SI8920BC-IP.

Q: What inventory levels are available for the substitute parts?

A: SI8921AD-IS4 has 2709 pieces in stock, and SI8921BD-IS4 has 1341 pieces in stock. Both provide substantial availability for immediate procurement and production requirements.