SI2434-C-FS Equivalent & Substitute Parts

Part Overview

The SI2434-C-FS is a modem interface IC manufactured by Skyworks Solutions Inc., designed for system-side applications in 16-SOIC surface mount packaging. This component implements V.34 data format protocol with 3.3V supply voltage operation. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SI2434-C-FS

Skyworks Solutions Inc.In Stock: 2197SI2434-C-FS Datasheet

Current PartRFQ

SI2434-D-FS

Skyworks Solutions Inc.In Stock: 1196SI2434-D-FS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI2434-C-FS is determined by strict alignment of the following critical parameters:

Package Compatibility: Both the main part and substitute must utilize 16-SOIC (0.154", 3.90mm Width) surface mount packaging to ensure PCB layout compatibility and assembly process continuity.

Manufacturer Consistency: Substitutes must originate from Skyworks Solutions Inc. to maintain design validation, supply chain reliability, and technical support continuity.

Functional Category: The substitute must operate within the Interface category classification to preserve system-level functionality.

Moisture Sensitivity: MSL rating of 3 (168 Hours) must be maintained to ensure equivalent handling, storage, and assembly requirements.

Supply Voltage Range: The substitute must support operation within the specified voltage parameters. The SI2434-C-FS operates at 3.3V; compatible substitutes must accommodate this voltage requirement.

The SI2434-D-FS meets all substitution criteria through identical packaging, manufacturer origin, category classification, and MSL rating, while providing extended protocol support and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SI2434-D-FS is the qualified substitute for the SI2434-C-FS based on the following engineering criteria:

Package and Mechanical Compatibility: Both components utilize identical 16-SOIC (0.154", 3.90mm Width) surface mount packaging, ensuring direct PCB layout compatibility without redesign requirements.

Electrical Compatibility: The SI2434-D-FS supply voltage range of 3V to 3.6V encompasses the SI2434-C-FS operating point of 3.3V, confirming electrical interchangeability within existing power distribution networks.

Compliance and Certification: The SI2434-D-FS carries EAR99 export classification and maintains identical HTSUS coding (8542.39.0001), supporting regulatory and compliance requirements.

Product Status Advantage: The SI2434-D-FS holds active product status, ensuring continued manufacturer support, availability, and technical documentation access compared to the obsolete SI2434-C-FS.

Moisture Sensitivity Equivalence: Identical MSL rating of 3 (168 Hours) ensures equivalent handling, storage, and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can the SI2434-D-FS be used as a direct replacement for the SI2434-C-FS in existing designs?

A: Yes. Both components share identical 16-SOIC packaging, surface mount configuration, supply voltage compatibility (3.3V falls within the 3V–3.6V range of the SI2434-D-FS), and MSL rating. No PCB layout modifications are required.

Q: What is the primary functional difference between these two parts?

A: The SI2434-C-FS implements V.34 data format protocol, while the SI2434-D-FS supports multiple protocols including V.21, V.22, V.23, V.29, V.32, Bell 103, and Bell 212A, with 33.6k baud rate capability. The SI2434-D-FS provides extended protocol compatibility.

Q: Why is the SI2434-C-FS classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The SI2434-D-FS, with active product status, represents the current supported alternative from Skyworks Solutions Inc.

Q: Are there any supply voltage considerations when substituting these parts?

A: The SI2434-C-FS operates at 3.3V, while the SI2434-D-FS operates across 3V to 3.6V. Existing 3.3V supply circuits are compatible with the SI2434-D-FS without modification.

Q: Do both parts require identical handling and storage procedures?

A: Yes. Both components carry MSL rating 3 (168 Hours), requiring identical moisture control, storage conditions, and assembly process protocols.

Q: Is the SI2434-D-FS the only qualified substitute for the SI2434-C-FS?

A: Based on the provided parameter specifications, the SI2434-D-FS is the identified substitute. Substitution eligibility is strictly determined by package compatibility, manufacturer origin, category classification, voltage range overlap, and MSL equivalence.