TE Connectivity 1-644457-4 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-644457-4 is a through-hole, right-angle rectangular connector header with 14 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This component belongs to the MTA-100 series and features unshrouded male pin contacts with tin-lead plating. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement requirements. Substitute parts maintain functional compatibility through matching electrical and mechanical specifications while offering improved product status and compliance characteristics.

Substiute Parts

1-644457-4

TE Connectivity AMP ConnectorsIn Stock: 7221-644457-4 Datasheet

Current PartRFQ

4-644457-4

TE Connectivity AMP ConnectorsIn Stock: 9364-644457-4 Datasheet

DirectRFQ

929500-01-14

3MIn Stock: 1177929500-01-14 Datasheet

SimilarRFQ

929500-01-14-RK

3MIn Stock: 1085929500-01-14-RK Datasheet

SimilarRFQ

929550-01-14-EU

3MIn Stock: 1260929550-01-14-EU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1-644457-4 is determined by the following critical parameters: connector type (header), contact type (male pin), number of positions (14), mating pitch (2.54mm), mounting configuration (through-hole right-angle), and termination method (solder). All identified substitute parts maintain these core specifications.

The substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: The 4-644457-4 from TE Connectivity AMP Connectors represents a direct equivalent within the same MTA-100 series. This part maintains identical electrical and mechanical specifications with the primary distinction being product status (active versus obsolete) and contact finish composition (tin versus tin-lead).

Cross-Manufacturer Alternatives: The 3M 929 series headers (929500-01-14, 929500-01-14-RK, and 929550-01-14-EU) provide functional substitution through matching pitch, position count, mounting type, and termination method. These parts operate within compatible temperature ranges and maintain equivalent flammability ratings. Variations exist in contact length dimensions, insulation material composition, and contact finish specifications, which are documented in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 4-644457-4

The 4-644457-4 from TE Connectivity AMP Connectors is the preferred substitute for the obsolete 1-644457-4. This part maintains identical specifications within the MTA-100 series, including pitch, position count, mounting configuration, and operating temperature range. The 4-644457-4 carries active product status and RoHS3 compliance, addressing regulatory requirements for new designs. The contact finish differs from tin-lead to tin composition, which is compatible with standard solder assembly processes. This part is recommended for direct replacement in existing designs with minimal qualification effort.

Secondary Recommendation: 929500-01-14-RK

The 3M 929500-01-14-RK provides an alternative cross-manufacturer solution with active product status and RoHS compliance. This part maintains the critical 2.54mm pitch and 14-position configuration. The 929500-01-14-RK features increased contact finish thickness (200.0µin) and operates within a -40°C to 105°C temperature range, which covers the upper portion of the main part's operating envelope. The contact length dimensions differ slightly (0.295" mating versus 0.260" for the main part), requiring verification of mating interface compatibility in the target application. The breakaway connector feature provides additional design flexibility.

Tertiary Recommendation: 929550-01-14-EU

The 3M 929550-01-14-EU offers gold-plated contact surfaces, suitable for applications requiring enhanced corrosion resistance or improved contact reliability in harsh environments. This part maintains active product status and the standard 2.54mm pitch with 14 positions. The gold finish (10.0µin thickness) differs significantly from the tin-lead baseline, and this part should be selected only when superior contact performance justifies the increased cost and potential assembly process modifications.

Not Recommended: 929500-01-14

The 929500-01-14 carries last-time-buy product status, indicating discontinued production. This part should not be selected for new designs or long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 4-644457-4 be used as a direct replacement for the 1-644457-4 in existing assemblies?

A: Yes. The 4-644457-4 maintains identical electrical and mechanical specifications, including pitch (2.54mm), position count (14), mounting type (through-hole right-angle), and operating temperature range (-55°C to 105°C). The contact finish composition change from tin-lead to tin is compatible with standard solder assembly processes and does not affect functional performance.

Q: What are the key differences between the TE Connectivity MTA-100 series and the 3M 929 series headers?

A: The primary differences are contact length dimensions and insulation material composition. The MTA-100 series features 0.260" mating contact length and thermoplastic insulation, while the 929 series provides 0.295" mating contact length and polyester or PCT insulation. Both series maintain the 2.54mm pitch and 14-position configuration. The 929 series includes breakaway connector functionality, which the MTA-100 does not provide.

Q: Are the 3M 929 series parts compatible with MTA-100 series receptacles?

A: Compatibility depends on the specific receptacle design and mating interface requirements. The increased contact length in the 929 series (0.295" versus 0.260") may affect mating depth and contact engagement. Physical verification of mating interface geometry is required before substitution.

Q: What is the significance of the contact finish differences among the substitute parts?

A: Contact finish affects corrosion resistance, contact reliability, and assembly compatibility. Tin-lead and tin finishes are standard for solder assembly and provide adequate performance in typical environments. Gold plating (929550-01-14-EU) offers superior corrosion resistance and is specified for applications with extended shelf life, harsh environmental exposure, or high-reliability requirements. Gold-plated parts may require process validation to ensure compatibility with existing assembly procedures.

Q: Does the operating temperature range difference between the main part (-55°C to 105°C) and the 3M alternatives (-40°C to 105°C) affect substitution eligibility?

A: The 3M parts operate within a narrower temperature range, with a higher minimum temperature (-40°C versus -55°C). Substitution is acceptable for applications operating within the -40°C to 105°C envelope. Applications requiring operation below -40°C must retain the original 1-644457-4 or select the 4-644457-4, which maintains the full -55°C to 105°C range.

Q: What compliance considerations apply to the substitute parts?

A: The 4-644457-4 is RoHS3 compliant, meeting current regulatory requirements for new designs. The 929500-01-14-RK is RoHS compliant. The 929500-01-14 and 929550-01-14-EU compliance status is not specified in the provided data. All parts carry UL94 V-0 flammability ratings and EAR99 export classification. Designs subject to RoHS requirements should prioritize the 4-644457-4 or 929500-01-14-RK.

Q: How does the current rating specification affect part selection?

A: The main part specifies current rating as "varies by wire gauge," indicating current capacity is determined by the connected wire specification rather than the connector itself. The 3M 929 series parts specify 2.5A current rating. For applications requiring current capacity verification, the 3M parts provide explicit rating documentation, while the TE Connectivity parts require wire gauge specification to determine capacity.