TE Connectivity 1-644861-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-644861-2 is a rectangular connector header designed for through-hole mounting applications. This component is a 12-position, single-row connector with 0.100" (2.54mm) pitch spacing, featuring shrouded 4-wall construction and solder termination. The part operates across a temperature range of -55°C to 105°C and is rated for 250VAC applications.

The 1-644861-2 carries an obsolete product status, making it necessary to identify functionally equivalent alternatives for new designs and ongoing production requirements. Direct substitutes within the MTA-100 series are available with improved compliance certifications and active manufacturing status.

Substiute Parts

1-644861-2

TE Connectivity AMP ConnectorsIn Stock: 9861-644861-2 Datasheet

Current PartRFQ

3-644861-2

TE Connectivity AMP ConnectorsIn Stock: 25403-644861-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-644861-2 is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Contact type (Male Pin), number of positions (12), pitch spacing (0.100"/2.54mm), voltage rating (250VAC), and operating temperature range (-55°C to 105°C) must remain identical.

Mechanical Parameters: Mounting type (Through Hole), shrouding configuration (Shrouded - 4 Wall), termination method (Solder), and connector style (Board to Cable/Wire) must be preserved.

Material & Safety Parameters: Insulation material (Polyester), contact material (Copper Alloy), and flammability rating (UL94 V-0) establish baseline compatibility.

Series Designation: Both parts belong to the MTA-100 series, confirming mechanical and electrical interchangeability.

The substitute part 3-644861-2 maintains full equivalence across all critical parameters while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 3-644861-2 serves as the direct functional equivalent to the obsolete 1-644861-2. Both components share identical electrical and mechanical specifications within the MTA-100 series, ensuring pin-for-pin compatibility and interchangeability in board-level applications.

Product Status Consideration: The 1-644861-2 is classified as obsolete, while the 3-644861-2 maintains active manufacturing status. This distinction is significant for long-term supply chain planning and component availability.

Regulatory Compliance: The 3-644861-2 achieves ROHS3 compliance and REACH Unaffected status, compared to the non-compliant and vendor-undefined status of the 1-644861-2. This compliance improvement aligns with current regulatory requirements for electronic components in most markets.

Contact Finish Specification: The primary technical difference between the two parts is the contact finish composition. The 1-644861-2 features Tin-Lead plating, while the 3-644861-2 uses pure Tin plating. Both finishes maintain equivalent electrical performance and solderability characteristics for the specified voltage and current applications.

Packaging and Inventory: The 3-644861-2 is available in bulk packaging with significantly higher inventory levels (2474 pieces) compared to the 1-644861-2 (976 pieces), supporting production continuity and cost optimization.

Frequently Asked Questions (FAQ)

Q: Are the 1-644861-2 and 3-644861-2 electrically interchangeable?

A: Yes. Both components operate at 250VAC, support the same current ratings based on wire gauge, and function across the identical temperature range of -55°C to 105°C. The 12-position, single-row configuration with 0.100" pitch spacing is identical in both parts.

Q: What is the significance of the contact finish difference between Tin-Lead and Tin?

A: Both Tin-Lead and Tin finishes provide equivalent solderability and electrical performance for this connector application. The shift to pure Tin plating in the 3-644861-2 reflects compliance with RoHS3 regulations, which restrict lead content in electronic components.

Q: Can I use the 3-644861-2 as a direct replacement in existing designs using the 1-644861-2?

A: Yes. The 3-644861-2 maintains full mechanical and electrical compatibility with the 1-644861-2. No design modifications are required for substitution. The through-hole mounting, solder termination, and shrouded 4-wall configuration are identical.

Q: Why is the 1-644861-2 listed as obsolete?

A: The obsolete status reflects TE Connectivity's product lifecycle management. The 3-644861-2 represents the current active equivalent within the MTA-100 series and is the recommended part for new designs and ongoing production.

Q: What is the difference in packaging between these two parts?

A: The 1-644861-2 is supplied in standard packaging, while the 3-644861-2 is available in bulk packaging. Bulk packaging typically offers cost advantages for high-volume production runs.

Q: Are both parts suitable for general-purpose applications?

A: Yes. Both the 1-644861-2 and 3-644861-2 are classified for general-purpose applications and meet UL94 V-0 flammability requirements, making them suitable for a wide range of board-to-cable/wire connection scenarios.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special moisture control measures during storage and handling.