TE Connectivity 1-640605-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-640605-2 is a 12-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 20 AWG discrete or ribbon cable. This connector features tin-lead contact finish and free-hanging in-line mounting configuration. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

1-640605-2

TE Connectivity AMP ConnectorsIn Stock: 11751-640605-2 Datasheet

Current PartRFQ

4-640605-2

TE Connectivity AMP ConnectorsIn Stock: 8104-640605-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-640605-2 is determined by strict equivalence across the following critical parameters:

• Connector Type & Position Count: Receptacle configuration with 12 positions
• Pitch & Row Configuration: 0.156" (3.96mm) pitch, single-row layout
• Cable Termination Method: IDC termination technology
• Wire Gauge Compatibility: 20 AWG wire specification
• Mounting Configuration: Free-hanging in-line mounting
• Series Compatibility: MTA-156 series designation

The substitute part 4-640605-2 maintains identical electrical and mechanical specifications across all these parameters. The primary distinction is the contact finish material (tin versus tin-lead) and product status transition from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The 4-640605-2 serves as the direct active equivalent to the obsolete 1-640605-2. Selection of the substitute part is based on the following engineering criteria:

Product Status: The 1-640605-2 is classified as obsolete, creating supply chain risk and limiting long-term availability. The 4-640605-2 maintains active product status with confirmed inventory availability.

Regulatory Compliance: The 4-640605-2 is RoHS compliant, whereas the 1-640605-2 is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the 4-640605-2 is the appropriate selection.

Contact Finish Specification: The primary material difference is the contact finish. The 1-640605-2 uses tin-lead finish, while the 4-640605-2 uses tin finish. Both maintain identical contact finish thickness of 80.0µin (2.03µm), ensuring equivalent electrical performance and contact resistance characteristics.

Electrical and Mechanical Equivalence: All functional parameters remain identical between the two parts, including connector type, position count, pitch, termination method, wire gauge, and mounting configuration. Direct substitution is supported without circuit or mechanical redesign.

Frequently Asked Questions (FAQ)

Q: Can the 4-640605-2 be used as a direct replacement for the 1-640605-2 in existing designs?

A: Yes. The 4-640605-2 is electrically and mechanically equivalent to the 1-640605-2 across all critical parameters including connector type, position count, pitch, IDC termination, wire gauge, and mounting configuration. Direct substitution is supported without design modification.

Q: What is the difference between the tin-lead finish on the 1-640605-2 and the tin finish on the 4-640605-2?

A: Both finishes maintain the same contact finish thickness of 80.0µin (2.03µm). The tin finish on the 4-640605-2 represents a lead-free alternative that complies with RoHS regulations, while the tin-lead finish on the 1-640605-2 is the legacy specification. Contact resistance and electrical performance are equivalent.

Q: Why is the 1-640605-2 classified as obsolete?

A: The 1-640605-2 is obsolete due to the industry transition toward RoHS-compliant components. The 4-640605-2 represents the active replacement that meets current regulatory requirements while maintaining full functional equivalence.

Q: Are there packaging differences between these parts?

A: The 1-640605-2 packaging specification is not defined in the available data. The 4-640605-2 is supplied in bulk packaging. Both parts are available from TE Connectivity AMP Connectors with confirmed inventory.

Q: What applications are these connectors suitable for?

A: These 12-position MTA-156 receptacle connectors are designed for IDC termination with discrete or ribbon cable at 20 AWG wire gauge. The feed-through feature and free-hanging in-line mounting support applications requiring flexible cable routing and in-line connector placement.

Q: Are there any compatibility concerns when substituting the 4-640605-2 for the 1-640605-2?

A: No compatibility concerns exist. The parts are fully equivalent in electrical and mechanical specifications. The MSL rating of 1 (unlimited) applies to both parts, indicating no moisture sensitivity restrictions during storage or handling.