Molex 1111124121 SFP+ Connector Equivalent & Substitute Parts

Part Overview

The Molex 1111124121 is a Position Connector classified as a Pluggable Connector in the SFP+ category. This component features a single-position SFP+ interface with shielded front connector design and heat sink integration without U-bracket configuration. The part is currently designated as Obsolete, which necessitates identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and field service applications. Obsolete status indicates the manufacturer has discontinued production, making substitute parts essential for procurement and system maintenance.

Substiute Parts

1111124121

MolexIn Stock: 7711111124121 Datasheet

Current PartRFQ

1111128121

MolexIn Stock: 7501111128121 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1111124121 is determined by alignment across the following critical parameters:

Connector Category & Type: Both the main part and substitute must function as SFP+ Pluggable Connectors to ensure electrical and mechanical compatibility with existing socket interfaces.

Base Product Number: The substitute part shares the same base product number (111112), confirming it belongs to the same connector family and design lineage.

Functional Configuration: The substitute maintains the single-position SFP+ architecture with shielded front connector and heat sink integration, preserving the thermal and electromagnetic performance characteristics of the original design.

Compliance & Environmental Ratings: Both parts maintain RoHS Compliance and MSL 1 (Unlimited) moisture sensitivity classification, ensuring equivalent reliability and environmental performance in production and field deployment.

Product Status Transition: The substitute part (Molex 1111128121) carries Active product status, providing ongoing manufacturer support, availability, and technical documentation.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1111128121 serves as the direct substitute for the obsolete Molex 1111124121 based on the following engineering criteria:

Compliance Equivalence: Both parts maintain identical RoHS Compliance status and MSL 1 (Unlimited) environmental rating, ensuring equivalent regulatory acceptance and reliability performance across manufacturing and field deployment environments.

Product Lifecycle Status: The substitute part carries Active product status, confirming ongoing manufacturer production, technical support, and supply chain availability. This transition from Obsolete to Active status eliminates procurement risk and ensures long-term component sourcing capability.

Connector Family Alignment: Both parts share the same base product number (111112) and SFP+ connector classification, confirming they belong to the same connector family with compatible electrical and mechanical interfaces.

Thermal & Electromagnetic Performance: The substitute maintains the heat sink integration and shielded design characteristics of the original part, preserving thermal management and EMI performance requirements.

Frequently Asked Questions (FAQ)

Q: Why is the Molex 1111124121 no longer available?

A: The Molex 1111124121 has reached end-of-life status and is designated as Obsolete by the manufacturer. Obsolete classification indicates production has been discontinued. The Molex 1111128121 represents the active equivalent within the same connector family.

Q: Are the Molex 1111124121 and 1111128121 electrically compatible?

A: Both parts are SFP+ Pluggable Connectors sharing the same base product number (111112). They maintain equivalent RoHS Compliance and MSL 1 ratings, confirming electrical and environmental performance equivalence.

Q: What is the difference between the main part and the substitute?

A: The primary difference is product status: the 1111124121 is Obsolete, while the 1111128121 is Active. The substitute specifies Through Hole, Right Angle mounting with Press-Fit termination and EMI Shielded features. Both maintain the SFP+ connector type and heat sink integration.

Q: Can I use the Molex 1111128121 as a direct replacement in existing designs?

A: The Molex 1111128121 is classified as the manufacturer-recommended substitute for the 1111124121. Both parts share the same base product number and connector family, confirming design compatibility. Verify mounting orientation and PCB layout requirements for your specific application.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL 1 (Unlimited) classification, indicating unlimited shelf life without moisture absorption concerns. This rating ensures equivalent reliability in storage, handling, and deployment across all manufacturing environments.

Q: Are both parts RoHS compliant?

A: Yes. Both the Molex 1111124121 and Molex 1111128121 maintain RoHS Compliance status, confirming they meet restricted substance requirements for regulated markets and applications.