3M 4640-7705 Rectangular Connector Plug - Equivalent & Substitute Parts

Part Overview

The 3M 4640-7705 is a 40-position rectangular plug connector with IDC (Insulation Displacement Contact) termination, designed for discrete or ribbon cable applications with wire gauges of 26-28 AWG. This connector features gold-plated contacts, a gray housing, and dual-row configuration with 0.100" pitch spacing. The part is classified as obsolete, making identification of active equivalent substitutes essential for ongoing procurement and system maintenance.

Substiute Parts

4640-7705

3MIn Stock: 9654640-7705 Datasheet

Current PartRFQ

4640-6000

3MIn Stock: 13124640-6000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3M 4640-7705 is determined by strict equivalence across the following critical parameters:

• Connector Type & Position Count: Both main and substitute parts must be 40-position plugs within the 3M 4600 series
• Pitch & Row Configuration: 0.100" (2.54mm) pitch with 2-row layout and 0.100" row spacing
• Termination Method: IDC cable termination for 26-28 AWG wire (stranded or solid)
• Contact Specifications: Gold plating at 30.0µin (0.76µm) thickness
• Compliance: ROHS3 compliance and MSL 1 rating maintained across all substitutes

The 3M 4640-6000 qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is product status: 4640-7705 is obsolete, while 4640-6000 is active and available in higher inventory quantities.

Parameter Comparison

Engineering Selection Recommendations

The 3M 4640-6000 is the direct active equivalent for the obsolete 4640-7705. Both parts maintain identical electrical and mechanical specifications, including contact configuration, pitch, termination method, and compliance certifications. The 4640-6000 is currently in active production status with higher inventory availability (1236 pcs vs. 924 pcs), making it the preferred selection for new designs and ongoing procurement requirements. Both parts satisfy ROHS3 compliance and carry MSL 1 ratings, ensuring compatibility with standard storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can the 4640-6000 be used as a direct replacement for the 4640-7705?

A: Yes. Both connectors share identical specifications for position count, pitch, row spacing, termination method, wire gauge compatibility, contact finish, and compliance ratings. The 4640-6000 is the active production equivalent.

Q: What is the primary difference between these two parts?

A: The 4640-7705 is classified as obsolete, while the 4640-6000 is active. The 4640-6000 also features a feed-through design versus the closed-end design of the 4640-7705, though both maintain identical electrical and mechanical compatibility.

Q: Are there packaging differences between the two parts?

A: The 4640-7705 is supplied in standard packaging, while the 4640-6000 is supplied in bulk packaging. This distinction does not affect connector functionality or compatibility.

Q: Do both parts support the same wire gauges and termination methods?

A: Yes. Both the 4640-7705 and 4640-6000 support 26-28 AWG wire (stranded or solid) with IDC termination, and both are compatible with discrete or ribbon cable applications.

Q: Are there any compliance or environmental rating differences?

A: No. Both parts are ROHS3 compliant with MSL 1 ratings and identical contact finish specifications (gold plating at 30.0µin thickness).