TE Connectivity AMP Connectors 644457-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644457-2 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features a 2-position configuration with 0.100" (2.54mm) pitch spacing, suitable for board-to-cable/wire connections in general-purpose applications. The part operates across a temperature range of -55°C to 105°C with a 250VAC voltage rating.

The 644457-2 carries an obsolete product status, which necessitates identification of active equivalent components for ongoing design support and procurement. Direct substitutes with identical electrical and mechanical specifications are available within the MTA-100 series.

Substiute Parts

644457-2

TE Connectivity AMP ConnectorsIn Stock: 1033644457-2 Datasheet

Current PartRFQ

3-644457-2

TE Connectivity AMP ConnectorsIn Stock: 217213-644457-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644457-2 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part 3-644457-2 maintains identical specifications in the following key areas:

Electrical Parameters: Pitch spacing (0.100" / 2.54mm), contact type (male pin), number of positions (2), voltage rating (250VAC), and operating temperature range (-55°C ~ 105°C) are identical between the main part and substitute.

Mechanical Parameters: Mounting configuration (through-hole, right-angle), contact dimensions (mating length 0.260" / 6.60mm, post length 0.110" / 2.79mm), insulation height (0.100" / 2.54mm), and termination method (solder) are identical.

Material and Construction: Both parts utilize copper alloy contacts with thermoplastic insulation and UL94 V-0 flammability rating.

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

The primary distinction between the main part and substitute relates to product status (obsolete versus active), packaging configuration, and contact finish specification (tin-lead versus tin), with no impact on functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 3-644457-2 serves as the direct functional equivalent to the obsolete 644457-2. Selection of the substitute part is supported by the following engineering considerations:

Product Status: The 644457-2 is classified as obsolete, limiting long-term procurement viability. The 3-644457-2 maintains active product status, ensuring continued availability and manufacturing support.

Regulatory Compliance: The 3-644457-2 achieves ROHS3 compliance, whereas the 644457-2 is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the 3-644457-2 is the appropriate selection.

Contact Finish Specification: The 644457-2 specifies tin-lead contact finish, while the 3-644457-2 specifies tin finish. Both maintain identical contact finish thickness (150.0µin / 3.81µm). The tin finish of the substitute part aligns with contemporary lead-free manufacturing standards.

Electrical and Mechanical Equivalence: All critical parameters determining connector function and interchangeability are identical: pitch spacing, contact configuration, mounting type, temperature rating, and voltage rating. The connectors are mechanically and electrically interchangeable.

Packaging: The 3-644457-2 is supplied in bulk packaging, whereas the 644457-2 packaging specification is not provided. Packaging differences do not affect functional performance.

Frequently Asked Questions (FAQ)

Q: Are the 644457-2 and 3-644457-2 mechanically interchangeable?

A: Yes. Both connectors share identical mounting type (through-hole, right-angle), pitch spacing (0.100" / 2.54mm), contact dimensions, and insulation height. They are mechanically interchangeable in board-level applications.

Q: Are the 644457-2 and 3-644457-2 electrically interchangeable?

A: Yes. Both connectors operate at identical voltage ratings (250VAC), temperature ranges (-55°C ~ 105°C), and contact specifications. They are electrically interchangeable for general-purpose applications.

Q: What is the significance of the contact finish difference (tin-lead versus tin)?

A: The contact finish difference reflects manufacturing standards evolution. Tin finish (3-644457-2) aligns with lead-free manufacturing practices, while tin-lead finish (644457-2) represents legacy specifications. Both finishes maintain identical thickness (150.0µin / 3.81µm) and provide equivalent electrical performance.

Q: Why is the 644457-2 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The 3-644457-2 provides equivalent functionality with active product status and ongoing manufacturing support.

Q: Does RoHS compliance affect connector performance?

A: RoHS compliance relates to material composition and environmental standards, not electrical or mechanical performance. The 3-644457-2 achieves ROHS3 compliance while maintaining identical functional specifications to the 644457-2.

Q: Can the 3-644457-2 be used as a direct replacement in existing designs?

A: Yes. The 3-644457-2 is a direct functional equivalent with identical electrical and mechanical specifications. No design modifications are required for substitution.

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

A: The 644457-2 packaging specification is not provided in the technical data. The 3-644457-2 is supplied in bulk packaging. Packaging differences do not affect connector performance or compatibility.

Q: Are both parts suitable for the same temperature range?

A: Yes. Both connectors operate across the identical temperature range of -55°C to 105°C, ensuring equivalent thermal performance in all operating conditions.