TE Connectivity AMP Connectors 1-645979-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1-645979-2 is a pin receptacle connector terminal designed to accept pin diameters of 0.042" to 0.049" (1.07mm to 1.24mm) with solder termination. This component features a beryllium copper contact material with gold finish and operates across a temperature range of -65°C to 125°C. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support and procurement planning.

Substiute Parts

1-645979-2

TE Connectivity AMP ConnectorsIn Stock: 8121-645979-2 Datasheet

Current PartRFQ

1-5645979-2

TE Connectivity AMP ConnectorsIn Stock: 9591-5645979-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1-645979-2 terminal connector is determined by strict alignment of the following critical parameters:

Pin Acceptance Specification: The substitute part must accept pin diameters within the range of 0.042" to 0.049" (1.07mm to 1.24mm). This parameter defines mechanical compatibility with mating pin components.

Termination Method: The substitute must utilize solder termination to maintain compatibility with existing PCB assembly processes and design specifications.

Tail Configuration: The substitute must feature a no-tail design to ensure proper fit within the mechanical envelope of the original application.

Contact Material and Finish: The substitute must employ beryllium copper contact material with gold finish to maintain electrical performance and corrosion resistance characteristics.

Physical Dimensions: Critical dimensions including overall length (0.308"), mounting hole diameter (0.102"), flange diameter (0.118"), and socket depth range (0.145" ~ 0.275") must align with the original specification.

Series Classification: The substitute must belong to Series 5 to ensure compatibility with the connector ecosystem.

The substitute part 1-5645979-2 meets all these criteria and is therefore classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 1-5645979-2 is a direct functional equivalent to the obsolete 1-645979-2 terminal connector. All critical electrical and mechanical parameters align identically between the two components.

Product Status Consideration: The main part 1-645979-2 carries an obsolete designation, while the substitute 1-5645979-2 maintains active product status. This distinction is significant for long-term component availability and manufacturer support.

Compliance Status: The substitute part 1-5645979-2 is RoHS compliant and carries a defined REACH status (REACH Unaffected), whereas the main part is RoHS non-compliant with vendor-undefined REACH status. For applications subject to environmental regulations or customer compliance requirements, the substitute part satisfies these regulatory frameworks.

Operating Temperature: The substitute part extends the upper operating temperature limit to 126°C compared to the main part's 125°C specification. This represents a marginal enhancement that does not restrict substitution in any application.

Packaging Format: The main part is supplied in bulk packaging, while the substitute is available in Tape & Reel (TR) format. This packaging difference affects procurement logistics and assembly automation compatibility but does not impact component functionality.

Board Thickness Specification: The main part accommodates board thickness of 0.062" to 0.125" (1.57mm to 3.18mm), while the substitute specifies 0.031" to 0.093" (0.79mm to 2.36mm). Applications utilizing board thicknesses between 0.093" and 0.125" require verification of the substitute's mechanical engagement characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 1-5645979-2 substitute directly replace the 1-645979-2 in existing designs?

A: Yes. The substitute part 1-5645979-2 is mechanically and electrically equivalent to the 1-645979-2. All critical parameters including pin acceptance diameter, termination method, contact material, contact finish, and physical dimensions are identical. The substitute maintains full compatibility with mating pin components and PCB assembly processes.

Q: What is the significance of the product status difference between the main part and substitute?

A: The main part 1-645979-2 is classified as obsolete, indicating that TE Connectivity has discontinued active production and support. The substitute 1-5645979-2 maintains active product status, ensuring ongoing availability, manufacturer technical support, and compliance with current manufacturing standards. For new designs or long-term production requirements, the active substitute part is the appropriate selection.

Q: Does the RoHS compliance difference affect substitution eligibility?

A: The RoHS compliance difference does not affect the functional substitution of the 1-5645979-2 with the 1-5645979-2. However, applications subject to RoHS regulations or customer compliance mandates must utilize the RoHS-compliant substitute part 1-5645979-2. The main part's non-compliant status restricts its use in regulated environments.

Q: Are there packaging considerations when substituting the 1-5645979-2?

A: Yes. The main part 1-645979-2 is supplied in bulk packaging, while the substitute 1-5645979-2 is available in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated assembly processes and high-volume production. Bulk packaging may be more suitable for manual assembly or low-volume applications. Procurement and assembly processes should be evaluated to ensure compatibility with the TR packaging format.

Q: What board thickness specifications apply to each part?

A: The main part 1-645979-2 accommodates board thickness of 0.062" to 0.125" (1.57mm to 3.18mm). The substitute 1-5645979-2 accommodates board thickness of 0.031" to 0.093" (0.79mm to 2.36mm). Applications utilizing board thicknesses between 0.093" and 0.125" should confirm mechanical engagement characteristics with the substitute part before implementation.

Q: Is the operating temperature difference between the parts significant?

A: The operating temperature difference is marginal. The main part operates from -65°C to 125°C, while the substitute operates from -65°C to 126°C. This 1°C extension at the upper limit does not restrict substitution in any standard application. Both parts maintain identical performance across the full temperature range of the main part specification.

Q: What is the REACH status difference, and does it affect substitution?

A: The main part carries a vendor-undefined REACH status, while the substitute is classified as REACH Unaffected. The REACH Unaffected designation indicates that the substitute part is not subject to REACH registration requirements. For applications requiring documented REACH compliance, the substitute part provides clear regulatory status, whereas the main part's undefined status may require additional vendor clarification.