Molex 0879780021 DDR2 SDRAM DIMM Socket - Equivalent & Substitute Parts

Part Overview

The Molex 0879780021 is a 240-position DIMM socket connector designed for DDR2 SDRAM memory applications. This through-hole mounted connector features board lock and latch mechanisms, with gold-plated contacts and black housing. The part is currently obsolete, making identification of functionally equivalent alternatives essential for system redesign, legacy board reproduction, or component sourcing when original inventory is unavailable.

Substiute Parts

0879780021

MolexIn Stock: 11000879780021 Datasheet

Current PartRFQ

10005639-11107LF

Amphenol ICC (FCI)In Stock: 197710005639-11107LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0879780021 is determined by strict alignment with the following parameters:

• Connector Style: Must be DIMM format
• Position Count: Must be exactly 240 positions
• Memory Type: Must support DDR2 SDRAM
• Mounting Type: Must be through-hole
• Standards Compliance: Must meet MO-237 standard
• Card Thickness: Must accommodate 0.050" (1.27mm) module thickness
• Contact Finish: Must be gold-plated
• Mechanical Features: Must include board lock and latch mechanisms
• Mounting Orientation: Must support normal, standard top-mounted configuration

The Amphenol ICC (FCI) part 10005639-11107LF meets all these criteria and is classified as a manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The Amphenol ICC (FCI) 10005639-11107LF is the qualified substitute for the obsolete Molex 0879780021. Selection is based on:

• Product Status: The substitute is active and currently in production, ensuring long-term availability and supply chain stability.
• Regulatory Compliance: Both parts maintain equivalent RoHS and REACH compliance status, with identical ECCN and HTSUS classifications.
• Functional Equivalence: All critical electrical and mechanical parameters are identical, including position count, memory type support, mounting configuration, and contact specifications.
• Inventory Availability: The substitute part has higher current stock levels (1959 units versus 1046 units), supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 10005639-11107LF be used as a direct replacement for the Molex 0879780021 in existing PCB designs?

A: Yes. Both connectors are electrically and mechanically equivalent across all specified parameters. The connector footprint, pin configuration, mounting holes, and mechanical engagement features are identical. No PCB redesign is required.

Q: Are there any differences in contact resistance or signal integrity between these two parts?

A: No differences are specified in the provided parameters. Both parts use identical gold plating thickness (15.0µin) and contact finish specifications, which determine electrical performance characteristics.

Q: What is the significance of the MO-237 standard compliance?

A: MO-237 is the industry standard for DIMM socket connectors. Both parts meet this standard, ensuring compatibility with DDR2 SDRAM modules and interoperability across systems designed to this specification.

Q: Does the change from Molex to Amphenol ICC affect regulatory or compliance documentation?

A: No. Both parts carry identical RoHS, REACH, ECCN, and HTSUS classifications. Regulatory documentation and compliance certifications remain unchanged.

Q: Are there any packaging or handling differences between these connectors?

A: Both parts are supplied in tray packaging. Moisture sensitivity level (MSL) is identical at Level 1 (Unlimited), indicating no special storage or handling requirements beyond standard component practices.

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

A: Yes. The parts are functionally equivalent and meet identical specifications. Production processes, soldering parameters, and assembly procedures remain unchanged.