TE Connectivity AMP Connectors 521187-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 521187-1 is a 1 Position Housing Connector Female Receptacle with 0.187" (4.75mm) terminal size, designed for Quick Connect/Disconnect applications. This component is classified as Obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

521187-1

TE Connectivity AMP ConnectorsIn Stock: 1034521187-1 Datasheet

Current PartRFQ

480435-1

TE Connectivity AMP ConnectorsIn Stock: 47893480435-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 521187-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Terminal Size: 0.187" (4.75mm)
• Number of Positions: 1
• Gender: Female, Receptacle
• Terminal Type: Quick Connect, Disconnect
• Mounting Type: Free Hanging (In-Line)
• Color: Natural
• For Use With/Related Products: 0.187" (4.75mm) Quick Connects

The substitute part 480435-1 satisfies all mandatory matching parameters. The primary distinction between the main part and substitute is the series designation (Mark III versus Faston) and product status transition (Obsolete to Active). The substitute part maintains full electrical and mechanical compatibility while offering active production status and enhanced inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 480435-1 is the manufacturer-recommended substitute for the obsolete 521187-1. Selection of the substitute part is justified on the following engineering and compliance bases:

Product Status: The 480435-1 maintains Active product status, ensuring continued availability, technical support, and manufacturing continuity. The 521187-1 Obsolete status creates supply chain risk and limits access to design documentation and manufacturing specifications.

Compliance Certification: Both parts maintain RoHS compliance. The 480435-1 carries ROHS3 Compliant designation, representing the current regulatory standard. Both parts are classified as EAR99 for export control purposes.

Electrical and Mechanical Equivalence: All critical functional parameters are identical between the main part and substitute, including terminal size, position count, gender, terminal type, and mounting configuration. These parameters determine connector compatibility with mating components and circuit board integration.

Inventory and Supply: The 480435-1 maintains significantly higher inventory levels (47,799 pieces) compared to the 521187-1 (1,018 pieces), supporting production scheduling and field service requirements.

Frequently Asked Questions (FAQ)

Q: Can the 480435-1 directly replace the 521187-1 in existing designs?

A: Yes. The 480435-1 satisfies all mandatory electrical and mechanical parameters required for direct substitution. Terminal size, position count, gender, terminal type, and mounting configuration are identical. The connector is compatible with 0.187" (4.75mm) Quick Connect/Disconnect mating components.

Q: What is the difference between the Mark III and Faston series designations?

A: Series designation indicates the product line within the TE Connectivity AMP Connectors portfolio. Both series employ identical 0.187" (4.75mm) Quick Connect/Disconnect terminal technology and are mechanically and electrically compatible. The Faston series (480435-1) represents the current active product line.

Q: Are there any packaging differences between the main part and substitute?

A: The 521187-1 packaging is not specified in the provided data. The 480435-1 is supplied in Bulk packaging. Packaging configuration does not affect connector functionality or compatibility.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both parts are RoHS Compliant. The 480435-1 carries ROHS3 Compliant designation, representing the current regulatory standard. Both parts are classified as EAR99 for export control purposes and are not subject to REACH restrictions.

Q: What is the Moisture Sensitivity Level (MSL) for these connectors?

A: Both the 521187-1 and 480435-1 carry MSL 1 (Unlimited) designation, indicating no moisture sensitivity constraints during storage, handling, or installation.

Q: Are contacts included with these housing connectors?

A: No. Both the 521187-1 and 480435-1 are housing components supplied without contacts. Contacts must be sourced separately and are compatible with 0.187" (4.75mm) Quick Connect/Disconnect terminal specifications.