SKY65404-21 Equivalent & Substitute Parts

Part Overview

The SKY65404-21 is an RF amplifier IC designed for 802.11/WiFi WLAN applications operating across the 4.9GHz to 5.9GHz frequency band. This component is packaged in a 6-QFN (1.5x1.5mm) surface mount configuration with an exposed pad. The SKY65404-21 is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SKY65404-21

Skyworks Solutions Inc.In Stock: 16603SKY65404-21 Datasheet

Current PartRFQ

SKY65404-31

Skyworks Solutions Inc.In Stock: 68035SKY65404-31 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SKY65404-21 is determined by strict equivalence across the following critical parameters:

Frequency range compatibility (4.9GHz ~ 5.9GHz), electrical performance specifications (13dB gain, 1dB noise figure), supply voltage range (2.8V ~ 5V), physical package format (6-QFN 1.5x1.5mm with exposed pad), and surface mount mounting type. The RF type classification (802.11/WiFi WLAN) establishes the functional application domain. Compliance certifications including RoHS3 and MSL rating must be maintained. The SKY65404-31 meets all these criteria and is classified as an active product, making it a direct substitute for the obsolete SKY65404-21.

Parameter Comparison

Engineering Selection Recommendations

The SKY65404-31 is the direct substitute for the SKY65404-21. Both components share identical electrical performance parameters, physical packaging, and compliance certifications. The primary distinction is product status: the SKY65404-21 is obsolete while the SKY65404-31 is active. The SKY65404-31 maintains ROHS3 compliance and MSL rating 1 (unlimited), ensuring compatibility with existing manufacturing and environmental requirements. Selection of the SKY65404-31 provides access to active inventory and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the SKY65404-31 directly replace the SKY65404-21 in existing designs?

A: Yes. Both components share identical frequency range (4.9GHz ~ 5.9GHz), gain (13dB), noise figure (1dB), supply voltage (2.8V ~ 5V), and package format (6-QFN 1.5x1.5mm). Pin-to-pin compatibility and electrical performance are equivalent.

Q: What is the primary reason for substitution?

A: The SKY65404-21 is classified as obsolete. The SKY65404-31 is an active product from the same manufacturer with identical specifications, ensuring continued availability and manufacturer support.

Q: Are there any compliance differences between these parts?

A: No. Both components are ROHS3 compliant with MSL rating 1 (unlimited). Environmental and regulatory compliance requirements are maintained.

Q: Does the RF type difference (802.11 vs 802.11a/n) affect substitution?

A: No. The RF type designation reflects supported standards. The SKY65404-31 supports 802.11a/n standards, which are compatible with the frequency range and application domain of the SKY65404-21. Both operate across the 4.9GHz ~ 5.9GHz band.

Q: Are there packaging or mounting considerations?

A: No. Both components use identical surface mount packaging: 6-XFDFN with exposed pad in 6-QFN (1.5x1.5mm) format. PCB layout and assembly processes remain unchanged.