TE Connectivity AMP Connectors 645979-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 645979-1 is a pin receptacle connector designed for 0.042" to 0.049" (1.07mm to 1.24mm) pin diameters with solder termination and no tail configuration. This component is classified as obsolete, indicating that direct procurement from original inventory may become limited. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications requiring this connector specification.

Substiute Parts

645979-1

TE Connectivity AMP ConnectorsIn Stock: 1116645979-1 Datasheet

Current PartRFQ

5645979-1

TE Connectivity AMP ConnectorsIn Stock: 8535645979-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 645979-1 is based on electrical and mechanical compatibility across the following critical parameters:

Pin Acceptance Specification: The substitute part must accept pin diameters within the 0.042" to 0.049" (1.07mm to 1.24mm) range to ensure proper mating with existing connector pins.

Mechanical Configuration: The substitute must maintain identical tail type (no tail), overall length (0.308"), mounting hole diameter (0.102"), flange diameter (0.118"), and socket depth range (0.145" to 0.275") to ensure direct board-level compatibility without redesign.

Termination Method: Solder termination is required for compatibility with existing PCB assembly processes.

Contact Material and Finish: Beryllium copper with tin finish at 100.0µin thickness ensures electrical performance and environmental resistance equivalent to the original specification.

Operating Temperature Range: The substitute must support the -65°C to 125°C operating window or exceed it.

Series Classification: Both parts belong to Series 5, confirming design family compatibility.

The substitute part 5645979-1 meets all these criteria while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 5645979-1 is electrically and mechanically equivalent to the 645979-1 across all critical functional parameters. Selection between these parts should be based on the following factors:

Product Status: The 645979-1 is obsolete, while 5645979-1 is active production. For new designs or long-term supply requirements, 5645979-1 is the appropriate selection.

Regulatory Compliance: The 5645979-1 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The 645979-1 is RoHS non-compliant and has undefined REACH status. Applications subject to RoHS or REACH requirements must use 5645979-1.

Operating Temperature: The 5645979-1 supports -65°C to 126°C, providing a 1°C margin above the 645979-1 specification of -65°C to 125°C. Both parts are suitable for equivalent thermal environments.

Packaging Format: The 645979-1 is supplied in bulk packaging, while 5645979-1 is supplied in Tape & Reel format. Packaging selection depends on assembly process requirements and order quantities.

Electrical and Mechanical Compatibility: All pin acceptance, termination, dimensional, contact material, and finish specifications are identical, ensuring direct functional substitution without circuit or layout modifications.

Frequently Asked Questions (FAQ)

Q: Can 5645979-1 be used as a direct replacement for 645979-1 in existing designs?

A: Yes. The 5645979-1 is electrically and mechanically equivalent to 645979-1. All critical parameters including pin diameter acceptance (0.042" to 0.049"), solder termination, overall length (0.308"), mounting hole diameter (0.102"), flange diameter (0.118"), socket depth (0.145" to 0.275"), contact material (beryllium copper), and contact finish (tin at 100.0µin) are identical. Direct substitution is possible without design modifications.

Q: What is the difference between the 645979-1 and 5645979-1?

A: The primary differences are product status, compliance certifications, and packaging. The 645979-1 is obsolete with undefined RoHS and REACH status, while 5645979-1 is active production with ROHS3 compliance and REACH unaffected status. The 645979-1 is supplied in bulk packaging; 5645979-1 is supplied in Tape & Reel format. The operating temperature range of 5645979-1 extends to 126°C compared to 125°C for 645979-1.

Q: Are there any thermal performance differences between these parts?

A: Both parts operate within the -65°C to 125°C range. The 5645979-1 extends to 126°C, providing a 1°C margin. Contact material (beryllium copper) and finish specifications are identical, ensuring equivalent thermal and electrical performance.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) packaging used for 5645979-1 and bulk packaging used for 645979-1 do not affect electrical or mechanical performance. Packaging format is determined by assembly process requirements and order quantities.

Q: Which part should be selected for new designs?

A: The 5645979-1 should be selected for new designs. It is active production, ROHS3 compliant, and has defined REACH status, meeting current regulatory requirements. The 645979-1 is obsolete and should not be used for new development.

Q: Are these parts compatible with existing PCB layouts designed for 645979-1?

A: Yes. All mechanical dimensions are identical: mounting hole diameter (0.102"), flange diameter (0.118"), overall length (0.308"), and socket depth (0.145" to 0.275"). PCB layouts require no modification for substitution.

Q: What is the pin diameter acceptance range for both parts?

A: Both 645979-1 and 5645979-1 accept pin diameters of 0.042" to 0.049" (1.07mm to 1.24mm). This specification is identical for both parts.

Q: Are there any moisture sensitivity differences?

A: Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.