Molex 1111121120 SFP+ 1X1 Cage Kit Equivalent & Substitute Parts

Part Overview

The Molex 1111121120 is a SFP+ 1X1 Cage Kit with PCI High-Speed connector assembly designed for position connector applications. This part is classified as Obsolete and is no longer in active production. Due to its obsolete status, sourcing original inventory becomes increasingly difficult. Identifying equivalent and substitute parts ensures design continuity and maintains supply chain reliability for applications requiring SFP+ cage connectivity with high-speed PCI integration.

Substiute Parts

1111121120

MolexIn Stock: 8891111121120 Datasheet

Current PartRFQ

1111128120

MolexIn Stock: 9241111128120 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1111121120 is based on the following critical parameters:

Functional Equivalence Criteria:

• Base Product Number Match: Both parts share the base product number 111112, indicating they belong to the same product family and are designed for compatible applications
• Connector Category: Both are classified as Pluggable Connectors with SFP+ cage functionality
• Application Type: Both support SFP+ 1X1 cage kit configurations with high-speed PCI integration

Compliance & Status Considerations:

• The substitute part (1111128120) maintains Active product status, ensuring ongoing availability and manufacturer support
• Both parts are RoHS Compliant, meeting environmental and regulatory requirements
• The substitute part carries EAR99 ECCN classification and HTSUS 8538.90.8180 code, confirming export compliance

Physical & Electrical Characteristics:

• The substitute part specifies SFP+ connector type with cage and heat sink design
• Through Hole, Right Angle mounting configuration provides mechanical compatibility for board-level integration
• Press-Fit termination ensures reliable electrical connection without soldering
• EMI Shielded feature maintains signal integrity for high-speed applications

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Molex 1111128120

The Molex 1111128120 is the direct substitute for the obsolete 1111121120. Selection of this part is based on the following engineering factors:

1. Product Status Alignment: The substitute part maintains Active status, ensuring manufacturer support, continued availability, and compliance with current industry standards. The original part's Obsolete classification creates supply chain risk and limits access to technical documentation updates.

2. Regulatory Compliance: Both parts are RoHS Compliant. The substitute part carries current export classifications (EAR99, HTSUS 8538.90.8180), confirming compliance with international trade and environmental regulations.

3. Functional Continuity: Both parts share the same base product number (111112) and are designed for SFP+ 1X1 cage kit applications with PCI high-speed connectivity. The substitute part provides explicit mechanical specifications (Through Hole, Right Angle mounting; Press-Fit termination; EMI Shielding) that ensure reliable performance in high-speed applications.

4. Moisture Sensitivity: The original part specifies MSL 1 (Unlimited). The substitute part lists MSL as Not Applicable, indicating it meets or exceeds moisture resistance requirements for standard storage and handling conditions.

Frequently Asked Questions (FAQ)

Q: Why is the Molex 1111121120 being discontinued?

A: The part is classified as Obsolete, indicating it has reached end-of-life status. Manufacturers discontinue products to focus resources on active product lines. The substitute part (1111128120) represents the current active equivalent within the same product family.

Q: Are the 1111121120 and 1111128120 mechanically interchangeable?

A: Both parts are SFP+ 1X1 cage kits with PCI high-speed connectivity and share the same base product number (111112). The substitute part specifies Through Hole, Right Angle mounting with Press-Fit termination. Mechanical compatibility depends on your PCB design accommodating these specifications. Verify your board layout supports right-angle mounting and press-fit termination before substitution.

Q: What is the difference between the connector descriptions?

A: The original part is described as a "Position Connector," while the substitute is specified as "SFP+ Cage with Heat Sink Connector." The substitute provides explicit functional details: cage design with integrated heat sink, press-fit through-hole termination, and EMI shielding. These specifications ensure thermal management and signal integrity for high-speed PCI applications.

Q: Are both parts RoHS Compliant?

A: Yes. Both the 1111121120 and 1111128120 are RoHS Compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What does MSL 1 (Unlimited) mean for the original part?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life under standard storage conditions (typically 30°C/85% RH). No special moisture control or baking procedures are required before assembly. The substitute part lists MSL as Not Applicable, which indicates it meets or exceeds standard moisture resistance requirements.

Q: Can I use the 1111128120 as a direct drop-in replacement?

A: The 1111128120 is functionally equivalent and shares the same base product family. However, verify that your PCB design accommodates the specified Through Hole, Right Angle mounting configuration and Press-Fit termination method. Consult the detailed mechanical drawings and application notes for both parts to confirm compatibility with your specific board layout and assembly process.

Q: What certifications and compliance standards apply to the substitute part?

A: The Molex 1111128120 carries EAR99 ECCN classification (indicating it is not subject to export restrictions) and HTSUS code 8538.90.8180 (electrical connector classification for tariff purposes). It is RoHS Compliant. These certifications confirm compliance with international trade, environmental, and regulatory standards.