Equivalent & Substitute Parts: Molex 1111126281

Part Overview

The Molex 1111126281 is a pluggable SFP+1X2 connector with press-fit termination and horizontal orientation. This component functions as a position connector within the 111112 series and is classified as obsolete. The obsolete status necessitates identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and field applications.

Substiute Parts

1111126281

MolexIn Stock: 12561111126281 Datasheet

Current PartRFQ

1111128281

MolexIn Stock: 7641111128281 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1111126281 is based on the following critical parameters:

Connector Classification: Both the main part and substitute maintain SFP+ connector type designation with ganged (1 x 2) cage configuration.

Termination Method: Press-fit termination is preserved across both components, ensuring compatibility with existing PCB pad layouts and assembly processes.

Series Alignment: Both components belong to the Molex 111112 base product series, confirming functional and mechanical compatibility.

Environmental Compliance: RoHS compliance and MSL rating of 1 (Unlimited) are maintained, supporting identical storage and handling requirements.

Product Status Transition: The substitute part (1111128281) carries active product status, providing long-term availability and manufacturing support compared to the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1111128281 is the direct substitute for the obsolete Molex 1111126281 based on the following engineering criteria:

Compliance Alignment: Both components maintain RoHS compliance and identical MSL ratings, ensuring equivalent environmental and regulatory standing.

Series Continuity: Both parts belong to the Molex 111112 series, confirming mechanical and electrical compatibility within the same product family.

Termination Compatibility: Press-fit termination is consistent across both components, allowing direct substitution without PCB redesign or assembly process modification.

Active Product Status: The substitute part carries active manufacturing status, providing assured long-term availability, technical support, and supply chain continuity compared to the obsolete main part.

Functional Enhancement: The substitute incorporates an integrated heat sink feature within the ganged cage configuration, providing thermal management capability while maintaining the same footprint and press-fit interface.

Frequently Asked Questions (FAQ)

Q: Can the Molex 1111128281 directly replace the Molex 1111126281 in existing designs?

A: Yes. Both components share identical press-fit termination, horizontal orientation, SFP+ connector type, and 1x2 ganged cage configuration within the 111112 series. The substitute maintains all critical electrical and mechanical parameters required for direct substitution.

Q: What is the primary difference between these two components?

A: The Molex 1111128281 includes an integrated heat sink within the ganged cage assembly, whereas the Molex 1111126281 does not specify this feature. Both components maintain identical termination, orientation, and series designation.

Q: Are there any compliance or environmental differences between these parts?

A: No. Both components are RoHS compliant and carry an MSL rating of 1 (Unlimited), indicating identical environmental handling and storage requirements.

Q: Why is the Molex 1111126281 listed as obsolete?

A: The Molex 1111126281 has reached end-of-life status within Molex's product portfolio. The Molex 1111128281 represents the active equivalent within the same series, ensuring continued design support and component availability.

Q: Will substituting this component require PCB layout changes?

A: No. Both components utilize press-fit termination and maintain the same horizontal orientation and ganged (1 x 2) cage configuration, allowing direct substitution without PCB redesign.

Q: Are inventory levels a consideration for component selection?

A: Current inventory for the Molex 1111126281 is 1150 pieces. The Molex 1111128281 has 682 pieces in stock. For long-term production requirements, the active status of the substitute part ensures ongoing availability beyond current inventory levels.