Molex 1111123420 SFP+ Cage Connector Equivalent & Substitute Parts

Part Overview

The Molex 1111123420 is a 1X4 SFP+ cage connector with network pin heat sink functionality, designed as a position connector for high-speed optical transceiver applications. This part is classified as obsolete and no longer in active production. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing system maintenance and new production builds.

Substiute Parts

1111123420

MolexIn Stock: 9451111123420 Datasheet

Current PartRFQ

1111123820

MolexIn Stock: 10321111123820 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete Molex 1111123420 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Connector type: SFP+ cage
• Configuration: 1X4 (single row, four positions)
• Integrated heat sink functionality
• Network pin compatibility

Mechanical Compatibility Criteria:

• Mounting type: Through hole, right angle orientation
• Termination method: Press-fit connection
• Series alignment: Base product number 111112

Compliance & Environmental Criteria:

• RoHS compliance status
• Moisture sensitivity level (MSL 1)
• ECCN classification for export control

The substitute part Molex 1111123420 maintains functional and mechanical compatibility within the 111112 series while transitioning from obsolete to active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Molex 1111123820

The Molex 1111123820 is the manufacturer-recommended substitute for the obsolete 1111123420. Both parts share identical functional specifications within the 111112 series and maintain equivalent RoHS compliance and MSL ratings. The substitute part is currently in active production status with confirmed inventory availability (1022 pieces in stock), ensuring reliable supply for new designs and replacement applications.

The transition from the obsolete 1111123420 to the active 1111123820 presents no functional degradation. Both parts are specified for 1X4 SFP+ cage applications with integrated network pin heat sink functionality. The substitute part's active product status and established supply chain make it the appropriate selection for all new procurement and design implementations.

Frequently Asked Questions (FAQ)

Q: Can the Molex 1111123820 directly replace the 1111123420 in existing designs?

A: Yes. Both parts are members of the 111112 series and share identical functional specifications for 1X4 SFP+ cage connector applications with network pin heat sink integration. The substitute part maintains equivalent RoHS compliance and MSL ratings.

Q: What is the primary reason for substitution?

A: The original part number 1111123420 is classified as obsolete and no longer in active production. The 1111123820 is the manufacturer-recommended active alternative within the same product series.

Q: Are there differences in mounting or termination between these parts?

A: The substitute part 1111123820 is specified with through hole, right angle mounting and press-fit termination. The original part number 1111123420 does not have these parameters explicitly documented in the available specifications.

Q: What compliance certifications apply to the substitute part?

A: The Molex 1111123820 is RoHS compliant with MSL rating of 1 (unlimited moisture sensitivity level). It carries ECCN classification EAR99 and HTSUS code 8538.90.8180.

Q: Is inventory availability a consideration for this substitution?

A: Yes. The substitute part 1111123820 has confirmed inventory of 1022 pieces in stock, supporting immediate procurement for production requirements.