MAF94433 Equivalent & Substitute Parts Reference

Part Overview

The MAF94433 is a 2.442GHz WLAN chip RF antenna manufactured by TE Connectivity Laird, designed for surface mount applications in the 2.4GHz to 2.484GHz frequency band. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates within the UHF frequency group (2GHz to 3GHz) and is optimized for WiFi applications with a VSWR of 2.3.

Substiute Parts

MAF94433

TE Connectivity LairdIn Stock: 862MAF94433 Datasheet

Current PartRFQ

RN-SMA-4

Microchip TechnologyIn Stock: 2438RN-SMA-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAF94433 is determined by alignment of the following critical parameters:

Frequency Compatibility: The substitute part must operate within or encompass the 2.4GHz to 2.484GHz band specified for the MAF94433. The center frequency of 2.442GHz establishes the primary operating point.

Frequency Group: Both parts must operate within the UHF (2GHz to 3GHz) classification to ensure RF performance consistency.

Number of Bands: Single-band operation (1 band) is required to match the MAF94433 specification.

RF Family/Standard: WiFi standard compatibility is the primary application requirement.

VSWR Performance: The substitute part's VSWR must be compatible with the original specification of 2.3 to maintain impedance matching and signal integrity.

Connector/Termination Type: The MAF94433 uses solder termination. Substitute parts may employ alternative termination methods (such as SMA Male connectors) provided the electrical interface is compatible with the target application circuit.

Mounting Configuration: While the MAF94433 is surface mount, substitute parts may employ different mounting types (connector mount, etc.) if the physical integration is feasible within the application.

The RN-SMA-4 qualifies as a substitute based on frequency range overlap (2.39GHz to 2.51GHz encompasses the 2.442GHz center frequency), single-band operation, UHF classification, and WiFi applicability.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MAF94433 is classified as obsolete, making the RN-SMA-4 (active product status) a viable alternative for new procurement and ongoing design support.

Compliance and Certifications: The RN-SMA-4 carries ROHS3 compliance and REACH unaffected status, providing regulatory alignment for current manufacturing standards. Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification.

Frequency Band Alignment: The RN-SMA-4 frequency range (2.39GHz to 2.51GHz) encompasses the MAF94433 operating band (2.4GHz to 2.484GHz), ensuring RF performance within the WiFi spectrum.

VSWR Performance: The RN-SMA-4 exhibits superior VSWR performance (1.9) compared to the MAF94433 (2.3), indicating improved impedance matching characteristics.

Physical Integration Differences: The primary distinction between these parts is the mounting approach. The MAF94433 employs surface mount solder termination with minimal height (4.00mm), while the RN-SMA-4 uses connector mount termination with significantly greater height (90.42mm). Circuit board layout and mechanical envelope constraints must be evaluated during substitution planning.

Inventory Availability: The RN-SMA-4 is available in active production with 2400 units in stock, compared to the MAF94433 obsolete status with limited remaining inventory (839 units).

Frequently Asked Questions (FAQ)

Q: Can the RN-SMA-4 directly replace the MAF94433 in existing PCB designs?

A: Direct PCB replacement is not feasible due to fundamental differences in mounting type and physical dimensions. The MAF94433 is a surface mount chip antenna (4.00mm height), while the RN-SMA-4 is a connector mount whip antenna (90.42mm height). Circuit board redesign is required to accommodate the RN-SMA-4, including connector footprint modification and mechanical clearance verification.

Q: Are both parts suitable for WiFi applications?

A: The MAF94433 is explicitly specified for WiFi applications. The RN-SMA-4 frequency range (2.39GHz to 2.51GHz) is compatible with WiFi band requirements, though RF family/standard is not explicitly documented for this part.

Q: What is the significance of VSWR differences between these parts?

A: The RN-SMA-4 VSWR of 1.9 represents superior impedance matching compared to the MAF94433 VSWR of 2.3. Lower VSWR values indicate reduced signal reflection and improved transmission efficiency. This difference may result in enhanced RF performance in the substitute design.

Q: Do both parts meet current regulatory requirements?

A: The RN-SMA-4 carries ROHS3 compliance and REACH unaffected certification, meeting current regulatory standards. The MAF94433 regulatory status is not fully documented in the provided parameters. For new designs, the RN-SMA-4 is the preferred choice from a compliance perspective.

Q: What is the frequency overlap between these parts?

A: The MAF94433 operates at 2.4GHz to 2.484GHz, while the RN-SMA-4 operates at 2.39GHz to 2.51GHz. The overlap range is 2.4GHz to 2.484GHz, ensuring full compatibility within the original part's specified frequency band.

Q: Are there packaging or handling differences?

A: Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification, indicating identical moisture handling requirements. The RN-SMA-4 is supplied in bag packaging, while the MAF94433 packaging format is not specified.