MAF94121 Equivalent & Substitute Parts Reference

Part Overview

The MAF94121 is a dual-band PCB trace RF antenna manufactured by TE Connectivity Laird, designed for 802.11ba wireless applications. This antenna operates across 2.4GHz and 5.3625GHz frequency bands with U.FL (UMCC) IPEX MHF1 surface mount termination. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

MAF94121

TE Connectivity LairdIn Stock: 919MAF94121 Datasheet

Current PartRFQ

SG901-1066 ANTENNA

Sagrad Inc.In Stock: 15096SG901-1066 ANTENNA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAF94121 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Antenna Type: PCB Trace
• Termination: U.FL (UMCC), IPEX MHF1
• Mounting Type: Surface Mount
• Frequency Coverage: Minimum support for 2.4GHz band

Acceptable Variation Parameters:

• Number of Bands: Single-band substitutes are acceptable if they cover the primary 2.4GHz operating band
• Height: Physical height may vary within PCB assembly constraints
• VSWR: Performance specification of 2 or better
• Gain: May differ from original specification

The SG901-1066 qualifies as a substitute part based on matching antenna type, termination connector, mounting method, and primary frequency band coverage. However, this substitute operates as a single-band antenna (2.4GHz only) and does not provide the 5GHz band coverage of the original MAF94121.

Parameter Comparison

Engineering Selection Recommendations

For 2.4GHz-Only Applications: The SG901-1066 is suitable as a direct substitute when the design operates exclusively within the 2.4GHz band. Both parts share identical connector termination (U.FL IPEX MHF1), mounting method (surface mount), and moisture sensitivity classification. The SG901-1066 maintains active product status with ROHS3 compliance, ensuring long-term availability and supply chain stability.

For Dual-Band (2.4GHz + 5GHz) Applications: The SG901-1066 does not provide equivalent functionality due to absence of 5GHz band coverage. Alternative dual-band PCB trace antennas with U.FL IPEX MHF1 termination must be evaluated separately. The original MAF94121 specification requires a two-band antenna to maintain full system performance.

Physical Constraints: The SG901-1066 exhibits a maximum height of 0.087" (2.20mm) compared to the MAF94121 at 0.060" (1.52mm). PCB assembly designs with height-restricted areas may require layout verification before substitution.

Frequently Asked Questions (FAQ)

Q: Can the SG901-1066 replace the MAF94121 in all applications?

A: No. The SG901-1066 is a single-band antenna covering 2.4GHz only. It is suitable only for applications that do not require 5GHz band operation. Designs requiring dual-band coverage must use alternative parts.

Q: Are the connector types identical between these parts?

A: Yes. Both the MAF94121 and SG901-1066 use U.FL (UMCC) IPEX MHF1 surface mount termination, ensuring mechanical and electrical compatibility at the connector interface.

Q: What is the significance of the product status difference?

A: The MAF94121 is obsolete, meaning TE Connectivity Laird no longer manufactures or supports this part. The SG901-1066 is active, indicating current production and ongoing availability. For new designs or long-term procurement, active-status parts are preferred.

Q: Does the height difference affect PCB assembly?

A: The SG901-1066 is 0.027" (0.68mm) taller than the MAF94121. Applications with strict height constraints or confined PCB areas must verify clearance before substitution.

Q: Are both parts RoHS compliant?

A: The SG901-1066 is explicitly ROHS3 compliant. The MAF94121 RoHS status is not specified in the provided data. Compliance verification is required for applications with RoHS requirements.

Q: What VSWR performance should be expected?

A: Both parts specify VSWR of 2, indicating equivalent impedance matching performance at their respective operating frequencies.