TE Connectivity AMP Connectors 2-102977-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 2-102977-2 is a 44-position rectangular connector header designed for through-hole mounting with 0.100" (2.54mm) pitch. This connector operates within the AMPMODU Mod II series and is classified as a breakaway header for board-to-board or cable applications. The part is currently marked as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and component procurement.

Substiute Parts

2-102977-2

TE Connectivity AMP ConnectorsIn Stock: 7462-102977-2 Datasheet

Current PartRFQ

7-146253-2

TE Connectivity AMP ConnectorsIn Stock: 9297-146253-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2-102977-2 is determined by strict equivalence across the following critical parameters:

• Connector configuration: 44-position, 2-row header with 0.100" (2.54mm) mating pitch and row spacing
• Contact specifications: Male pin contacts with square shape and gold-plated mating surface
• Mounting and termination: Through-hole solder termination with push-pull fastening
• Electrical performance: 3A current rating and -65°C ~ 105°C operating temperature range
• Mechanical dimensions: Contact lengths (mating 0.318", post 0.125", overall 0.533"), insulation height 0.090"
• Material compliance: UL94 V-0 flammability rating

The substitute part 7-146253-2 maintains full equivalence across all these parameters while offering active product status and improved material composition.

Parameter Comparison

Engineering Selection Recommendations

The 7-146253-2 is the direct substitute for the obsolete 2-102977-2. Both connectors are manufactured by TE Connectivity within the same AMPMODU Mod II series and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction is product status: the 2-102977-2 is obsolete, while the 7-146253-2 is active. The substitute part features an upgraded insulation material (Liquid Crystal Polymer instead of Thermoplastic) and post contact finish (Tin instead of Tin-Lead), both of which represent material improvements without affecting functional compatibility.

Both parts maintain UL94 V-0 flammability compliance and identical ECCN/HTSUS classifications. The 7-146253-2 is the recommended selection for new designs and ongoing procurement due to its active status and improved material composition.

Frequently Asked Questions (FAQ)

Q: Are the 2-102977-2 and 7-146253-2 mechanically interchangeable?

A: Yes. Both connectors share identical mating pitch (0.100"), row spacing (0.100"), contact dimensions, and mounting specifications. They are direct mechanical equivalents within the AMPMODU Mod II series.

Q: What is the difference in insulation material between these parts?

A: The original 2-102977-2 uses Thermoplastic insulation, while the 7-146253-2 uses Liquid Crystal Polymer (LCP). Both materials meet UL94 V-0 flammability requirements and operate across the same temperature range (-65°C ~ 105°C).

Q: Does the post contact finish change affect soldering or electrical performance?

A: The 2-102977-2 uses Tin-Lead post finish, while the 7-146253-2 uses Tin post finish. Both finishes provide equivalent solder joint reliability and electrical conductivity at the specified 3A current rating.

Q: Can I use the 7-146253-2 as a direct replacement in existing assemblies designed for the 2-102977-2?

A: Yes. The 7-146253-2 maintains full dimensional and electrical equivalence with the 2-102977-2 and is suitable for direct substitution in existing board layouts and mating connector applications.

Q: Why is the 2-102977-2 marked as obsolete?

A: The 2-102977-2 has been superseded by the 7-146253-2 within TE Connectivity's product portfolio. The 7-146253-2 offers improved material specifications while maintaining complete functional equivalence.