Equivalent & Substitute Parts: Molex 1111126431

Part Overview

The Molex 1111126431 is a SFP+ 1X4 pluggable connector with heat sink and custom tail configuration, classified as a Position Connector. This part is currently listed as Obsolete, indicating it is no longer in active production or supported by the manufacturer. The obsolescence status necessitates identification of active equivalent components to maintain design continuity and ensure long-term supply chain viability for applications utilizing this connector interface.

Substiute Parts

1111126431

MolexIn Stock: 7371111126431 Datasheet

Current PartRFQ

1111128431

MolexIn Stock: 8171111128431 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1111126431 is based on alignment of the following critical parameters:

Substitution Criteria:

• Base Product Number Match: Both parts share Base Product Number 111112, indicating they belong to the same product family and design lineage
• Connector Category: Both are classified as Pluggable Connectors
• Connector Type: Both utilize SFP+ technology
• Configuration: Both feature 1X4 ganged cage configuration with integrated heat sink
• Termination Method: Both employ Press-Fit termination technology
• Functional Description: Both serve as Position SFP+ Cage connectors with heat sink capability

The Molex 1111128431 is the manufacturer-recommended substitute, transitioning from the obsolete 1111126431 while maintaining functional and mechanical compatibility within the 111112 product series.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Molex 1111128431

The Molex 1111128431 is the manufacturer-recommended substitute for the obsolete 1111126431. Selection of this active component is based on the following engineering factors:

• Product Status Alignment: The 1111128431 maintains Active status, ensuring continued manufacturer support, availability, and compliance with current regulatory standards
• Base Product Series Continuity: Both components share the 111112 base product number, confirming design compatibility and functional equivalence within the SFP+ connector family
• Regulatory Compliance: The substitute carries EAR99 ECCN classification, indicating compliance with current export control requirements
• Supply Chain Viability: Active inventory status (766 Pcs New Original In Stock) confirms immediate availability and long-term procurement reliability

Transition from the obsolete 1111126431 to the 1111128431 eliminates supply chain risk and ensures access to manufacturer technical support and future design updates.

Frequently Asked Questions (FAQ)

Q: Why is the 1111126431 no longer available?

A: The 1111126431 is classified as Obsolete, indicating the manufacturer has discontinued production. Molex has transitioned this product line to the active 1111128431 model within the same 111112 base product series.

Q: Are the 1111126431 and 1111128431 mechanically compatible?

A: Both components share the same base product number (111112) and identical functional descriptions (SFP+ 1X4 with heat sink). Both utilize Press-Fit termination and ganged cage configuration, confirming mechanical compatibility.

Q: What is the difference between these two part numbers?

A: The primary difference is product status: the 1111126431 is Obsolete, while the 1111128431 is Active. Both maintain the same SFP+ 1X4 connector configuration with heat sink and custom tail design. The 1111128431 includes updated ECCN classification (EAR99) reflecting current regulatory standards.

Q: Can I use the 1111128431 as a direct replacement in existing designs?

A: Yes. Both parts belong to the same product family (Base Product Number 111112) and share identical connector specifications. The 1111128431 is the manufacturer-recommended substitute for the obsolete 1111126431.

Q: What is the inventory status of these parts?

A: The obsolete 1111126431 has 683 Pcs in stock. The active substitute 1111128431 has 766 Pcs in stock, providing adequate supply for new designs and production requirements.

Q: Are there any compliance differences between these parts?

A: The 1111126431 is RoHS Compliant with MSL 1 (Unlimited). The 1111128431 carries EAR99 ECCN classification. Both meet current regulatory requirements for their respective product statuses.