Molex 1111120101 SFP+ Cage Connector Equivalent & Substitute Parts

Part Overview

The Molex 1111120101 is a 1X SFP+ cage connector with heat sink opening, designed as a position connector for high-speed optical transceiver applications. This component is classified as Obsolete and is no longer in active production. Due to its obsolete status, sourcing replacement units from original inventory becomes increasingly difficult. Identifying active equivalent parts ensures design continuity and supply chain reliability for applications currently utilizing this connector.

Substiute Parts

1111120101

MolexIn Stock: 11761111120101 Datasheet

Current PartRFQ

1111128101

MolexIn Stock: 12491111128101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1111120101 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Connector Type: SFP+ Cage with Heat Sink Opening
• Base Product Number: 111112 (same product family)
• Connector Style: Cage with Heat Sink
• Number of Positions: Single position (1X)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole, Right Angle
• Termination Method: Press-Fit
• Physical form factor compatibility with SFP+ module insertion

Compliance & Environmental Criteria:

• RoHS Compliance: Required
• Moisture Sensitivity Level: MSL 1 (Unlimited)
• Product Status: Active (preferred for new sourcing)

The substitute part maintains identical functional specifications within the 111112 product family while offering active product status and improved supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement:

The Molex 1111128101 is the direct active substitute for the obsolete Molex 1111120101. Both components share the same base product number (111112) and maintain functional equivalence as SFP+ cage connectors with heat sink openings. The 1111128101 offers the following advantages:

• Active Product Status: Currently manufactured and supported by Molex, ensuring long-term availability and supply chain stability
• Compliance Certification: Maintains RoHS compliance and MSL 1 rating identical to the original part
• Enhanced Features: Includes EMI shielding in addition to heat sink functionality
• Mechanical Compatibility: Press-fit termination and through-hole mounting ensure PCB integration compatibility

For New Designs:

The Molex 1111128101 is the recommended selection for new product designs requiring SFP+ cage connectors with heat sink openings. Its active status and enhanced EMI shielding provide superior long-term reliability and electromagnetic performance.

For Legacy System Maintenance:

Existing inventory of the 1111120101 (1153 units available) remains suitable for immediate maintenance requirements. Transition planning to the 1111128101 is recommended for future production runs and long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the Molex 1111128101 directly replace the Molex 1111120101 in existing designs?

A: Yes. Both connectors are SFP+ cage components within the same 111112 product family with identical functional specifications, RoHS compliance, and MSL ratings. The 1111128101 includes additional EMI shielding and maintains mechanical compatibility through press-fit termination and through-hole mounting.

Q: What is the primary reason for substituting the 1111120101?

A: The 1111120101 is classified as obsolete and no longer in active production. The 1111128101 provides an active, currently manufactured alternative within the same product family, ensuring supply chain continuity and long-term availability.

Q: Are there any electrical performance differences between these two connectors?

A: Both connectors are functionally equivalent for SFP+ module insertion and signal transmission. The 1111128101 includes EMI shielding, which provides enhanced electromagnetic interference protection compared to the original part.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on connector type (SFP+ cage), heat sink opening presence, base product family (111112), mounting method (through-hole, press-fit termination), RoHS compliance, and MSL rating (1 - Unlimited).

Q: Is the Molex 1111128101 RoHS compliant?

A: Yes. The 1111128101 is RoHS compliant and maintains the same environmental compliance standards as the original 1111120101.

Q: What is the moisture sensitivity level for the substitute part?

A: The Molex 1111128101 has an MSL rating of 1 (Unlimited), identical to the original part. This indicates no moisture sensitivity restrictions for storage or handling.

Q: Are both parts available in current inventory?

A: Yes. The obsolete 1111120101 has 1153 units in stock, and the active substitute 1111128101 has 1146 units in stock, providing immediate availability for both legacy support and new applications.