TE Connectivity 8-520129-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 8-520129-1 is a 0.250" (6.35mm) Quick Connect Female crimp connector designed for 18-22 AWG wire applications. This connector features a fully insulated, angled 90° flag terminal configuration and is part of the Ultra-Fast series. The 8-520129-1 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and service applications.

Substiute Parts

8-520129-1

TE Connectivity AMP ConnectorsIn Stock: 11548-520129-1 Datasheet

Current PartRFQ

2-520129-2

TE Connectivity AMP ConnectorsIn Stock: 42752-520129-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 8-520129-1 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part 2-520129-2 maintains identical specifications for tab width, tab thickness, wire gauge range, terminal gender, terminal type, insulation configuration, termination method, mounting orientation, contact material, contact finish, and insulation diameter. Both parts share the same base product number (520129) and series designation (Ultra-Fast), confirming functional interchangeability.

The primary distinction between these parts is product status and packaging configuration. The 8-520129-1 is obsolete with limited remaining inventory, while the 2-520129-2 is active with significantly higher stock availability. The 2-520129-2 is supplied in bulk packaging, whereas the 8-520129-1 packaging specification is not defined in available documentation.

Parameter Comparison

Engineering Selection Recommendations

The 2-520129-2 is the direct functional equivalent for the obsolete 8-520129-1. Both parts are manufactured by TE Connectivity AMP Connectors and maintain identical electrical and mechanical specifications across all critical parameters. Selection of the 2-520129-2 is supported by the following factors:

Product Status: The 2-520129-2 is classified as active, ensuring long-term availability and continued manufacturing support. The 8-520129-1 is obsolete, presenting supply chain risk for future procurement.

Regulatory Compliance: Both parts maintain ROHS3 compliance and carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications, confirming equivalent regulatory standing.

Moisture Sensitivity: Both parts carry MSL Rating 1 (Unlimited), indicating identical handling and storage requirements.

Inventory Availability: The 2-520129-2 maintains significantly higher stock levels (4217 pieces) compared to the 8-520129-1 (1047 pieces), supporting immediate procurement and production scheduling.

Packaging Configuration: The 2-520129-2 is supplied in bulk packaging, which is standard for high-volume production environments and reduces per-unit packaging costs.

Frequently Asked Questions (FAQ)

Q: Are the 8-520129-1 and 2-520129-2 electrically interchangeable?

A: Yes. Both connectors are identical in tab width (0.250"), tab thickness (0.032"), wire gauge range (18-22 AWG), contact material (brass), contact finish (tin), and all other electrical specifications. They are direct functional equivalents.

Q: What is the primary reason to transition from 8-520129-1 to 2-520129-2?

A: The 8-520129-1 is classified as obsolete, while the 2-520129-2 is active. This transition ensures continued component availability, manufacturing support, and eliminates supply chain discontinuity risk.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant, carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications, and maintain the same MSL Rating 1 (Unlimited) for moisture sensitivity.

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

A: The 8-520129-1 packaging specification is not defined in available documentation. The 2-520129-2 is supplied in bulk packaging, which is standard for production environments.

Q: Can I use the 2-520129-2 as a direct replacement in existing designs?

A: Yes. The 2-520129-2 maintains identical mechanical and electrical specifications to the 8-520129-1 across all critical parameters, including terminal type, mounting configuration, wire gauge compatibility, and contact specifications.

Q: Are there any differences in the connector series or base product number?

A: No. Both parts belong to the Ultra-Fast series and share the same base product number (520129), confirming they are variants of the same connector platform.

Q: What inventory levels are available for each part?

A: The 8-520129-1 has 1047 pieces in stock. The 2-520129-2 has 4217 pieces in stock, providing greater availability for production requirements.