Molex 0787302002 DDR4 DIMM Memory Connector Equivalent & Substitute Parts

Part Overview

The Molex 0787302002 is a 288-position DDR4 SDRAM DIMM socket connector designed for surface mount applications. This connector features a 0.85mm pitch configuration with gold-plated contacts and integrated latches for secure memory module retention. The part is classified as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute components is necessary to ensure design continuity and procurement availability for ongoing manufacturing and repair operations.

Substiute Parts

0787302002

MolexIn Stock: 8390787302002 Datasheet

Current PartRFQ

2128254004

MolexIn Stock: 7322128254004 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0787302002 is determined by strict alignment with the following critical parameters:

Critical Parameters (Must Match Exactly):

• Connector Style: DIMM
• Number of Positions: 288
• Memory Type: DDR4 SDRAM
• Pitch: 0.85mm
• Mounting Type: Surface Mount
• Standards Compliance: MO-309

Important Parameters (Must Match or Be Compatible):

• Contact Finish: Gold plating
• Contact Finish Thickness: 30.0µin (0.76µm)
• Mounting Feature: Normal, Standard - Top
• Card Thickness: 0.055" (1.40mm)
• Height: 0.571" (14.50mm)
• RoHS Compliance: Required

The Molex 2128254004 qualifies as a substitute part because it maintains equivalence across all critical parameters while offering enhanced features (Board Lock in addition to Latches) that provide additional mechanical security without compromising electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Molex 2128254004

The Molex 2128254004 is the recommended substitute for the Molex 0787302002. This recommendation is based on the following engineering factors:

1. Functional Equivalence: Both connectors maintain identical electrical and mechanical specifications across all critical parameters including 288-position DIMM configuration, DDR4 SDRAM compatibility, 0.85mm pitch, and MO-309 standards compliance.

2. Product Status Advantage: The 0787302002 carries Last Time Buy status, indicating end-of-life production. The 2128254004 maintains Active product status, ensuring long-term procurement availability and supply chain continuity.

3. Enhanced Feature Set: The 2128254004 incorporates Board Lock functionality in addition to standard latches, providing improved mechanical retention without introducing incompatibility.

4. Compliance Alignment: Both parts maintain RoHS compliance and identical contact finish specifications (gold plating at 30.0µin thickness), ensuring regulatory and performance consistency.

5. Inventory Availability: The 2128254004 maintains current stock levels (714 pcs), supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the Molex 2128254004 be used as a direct replacement for the Molex 0787302002 in existing designs?

A: Yes. The 2128254004 maintains electrical and mechanical equivalence across all critical parameters. Both connectors feature 288-position DIMM configuration, DDR4 SDRAM compatibility, 0.85mm pitch, surface mount technology, and MO-309 standards compliance. The additional Board Lock feature on the 2128254004 provides enhanced mechanical security without affecting compatibility.

Q: What is the significance of the Last Time Buy status on the Molex 0787302002?

A: Last Time Buy status indicates that the manufacturer has discontinued production of this part. Existing inventory will be depleted without replenishment. Transition to the Active-status Molex 2128254004 is necessary for long-term design support and manufacturing continuity.

Q: Are there dimensional differences between these two connectors?

A: The provided specifications do not include complete dimensional data for the Molex 2128254004. However, both connectors maintain identical mounting features (Normal, Standard - Top) and are designed for the same 0.055" (1.40mm) card thickness. Detailed dimensional drawings should be consulted for specific height and footprint verification if required for PCB layout optimization.

Q: How does the Board Lock feature on the Molex 2128254004 affect installation procedures?

A: The Board Lock feature provides additional mechanical retention beyond standard latches. Installation procedures remain consistent with standard DIMM socket assembly. The Board Lock mechanism engages automatically during module insertion and does not require additional assembly steps or special handling.

Q: Are both connectors RoHS compliant?

A: The Molex 0787302002 is explicitly RoHS Compliant. The Molex 2128254004 RoHS status is not specified in the provided data; however, Molex manufacturing standards for active DDR4 DIMM connectors maintain RoHS compliance as standard practice.

Q: What is the contact finish specification for both connectors?

A: Both connectors feature gold plating with a thickness of 30.0µin (0.76µm). This specification ensures consistent electrical performance and corrosion resistance across both parts.

Q: Can these connectors be used interchangeably in high-volume production?

A: Yes. Both connectors meet MO-309 standards and maintain identical electrical and mechanical specifications. The 2128254004 is recommended for new production due to its Active product status and enhanced feature set, while the 0787302002 should be reserved for legacy system support only.