TE Connectivity 644462-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644462-8 is an 8-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 a closed end design with polarizing key and tin-lead contact finish. The part is classified as obsolete, making identification of active equivalent components essential for ongoing procurement and system maintenance.

Substiute Parts

644462-8

TE Connectivity AMP ConnectorsIn Stock: 749644462-8 Datasheet

Current PartRFQ

3-644462-8

TE Connectivity AMP ConnectorsIn Stock: 11553-644462-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644462-8 is determined by strict equivalence across the following critical parameters:

• Connector Series: MTA-156 (maintains mechanical and electrical compatibility)
• Position Count: 8 positions (ensures pin count compatibility)
• Pitch Specification: 0.156" (3.96mm) (required for mating interface)
• Termination Method: IDC (maintains cable attachment compatibility)
• Wire Gauge: 20 AWG (ensures proper contact engagement)
• Contact Configuration: Female socket, single row (preserves electrical interface)
• Mounting Style: Free Hanging (In-Line) (maintains installation compatibility)
• Design Features: Closed end with polarizing key (ensures proper orientation and sealing)

The substitute part 3-644462-8 maintains identical electrical and mechanical specifications across all these parameters. The primary distinction is the transition from tin-lead to tin contact finish and the change in product status from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The 3-644462-8 serves as the direct active equivalent to the obsolete 644462-8. Selection of the substitute part is based on the following engineering considerations:

Product Status: The original 644462-8 is classified as obsolete. The 3-644462-8 is an active product with current manufacturing support and availability (1104 pieces in stock versus 708 for the original).

Regulatory Compliance: The 3-644462-8 is RoHS compliant, whereas the 644462-8 is RoHS non-compliant. This distinction is significant for applications subject to RoHS directives and environmental regulations. The transition from tin-lead to tin contact finish aligns with RoHS requirements while maintaining identical contact finish thickness and electrical performance.

Electrical and Mechanical Compatibility: Both parts maintain identical specifications across all critical parameters including pitch, position count, termination method, wire gauge, and mounting configuration. The connectors are mechanically and electrically interchangeable within the MTA-156 series framework.

Packaging and Availability: The substitute part is supplied in bulk packaging with higher current inventory levels, supporting production continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Are the 644462-8 and 3-644462-8 mechanically interchangeable?

A: Yes. Both connectors maintain identical pitch (0.156"), position count (8), mounting type (free hanging in-line), and design features (closed end with polarizing key). They are mechanically interchangeable within the MTA-156 series.

Q: What is the difference between tin-lead and tin contact finishes?

A: The 644462-8 uses tin-lead contact finish, while the 3-644462-8 uses tin finish. Both maintain 80.0µin (2.03µm) thickness. The tin finish in the substitute part aligns with RoHS compliance requirements. Contact finish does not affect mechanical compatibility or IDC termination performance.

Q: Can the 3-644462-8 be used as a direct replacement in existing designs?

A: Yes. The 3-644462-8 is electrically and mechanically equivalent to the 644462-8 across all specified parameters. The primary consideration is RoHS compliance status; applications requiring RoHS non-compliant components would need to evaluate regulatory requirements.

Q: What cable types are compatible with both connectors?

A: Both connectors support discrete or ribbon cable with 20 AWG wire gauge using IDC termination. The IDC termination method is identical for both parts.

Q: Why is the original part listed as obsolete?

A: The 644462-8 is obsolete due to the transition to RoHS-compliant manufacturing. The 3-644462-8 represents the active equivalent with updated contact finish specifications.

Q: Are there any differences in moisture sensitivity between the two parts?

A: No. Both parts maintain identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity constraints for storage or handling.

Q: What is the significance of the base product number 644462?

A: The base product number 644462 identifies the core connector design. The suffix "-8" specifies the 8-position configuration. Both the original and substitute parts share this base design, confirming their functional equivalence.