TE Connectivity AMP Connectors 521120-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 521120-6 is a 1 Position Housing Connector Female Receptacle with 0.250" (6.35mm) terminal size, designed for Quick Connect/Disconnect applications. This connector features a black polyamide (PA46) nylon 4/6 housing and free-hanging in-line mounting configuration. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and support ongoing applications requiring this connector type.

Substiute Parts

521120-6

TE Connectivity AMP ConnectorsIn Stock: 763521120-6 Datasheet

Current PartRFQ

154719

TE Connectivity AMP ConnectorsIn Stock: 5937154719 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 521120-6 is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Terminal Size: 0.250" (6.35mm)
• Number of Positions: 1
• Gender: Female, Receptacle
• Terminal Type: Quick Connect, Disconnect
• Mounting Type: Free Hanging (In-Line)
• Color: Black
• For Use With/Related Products: 0.250" (6.35mm) Quick Connects

The substitute part 154719 satisfies all mandatory matching parameters. Both connectors are manufactured by TE Connectivity AMP Connectors and maintain identical functional specifications for terminal engagement, housing configuration, and application compatibility. The primary distinction between these parts lies in material composition (PA46 nylon 4/6 versus PA66 nylon 6/6), series designation (Mark III versus Mark I), and product status (obsolete versus active).

Parameter Comparison

Engineering Selection Recommendations

The 154719 serves as the active equivalent substitute for the obsolete 521120-6. Both parts maintain identical functional specifications across all critical parameters governing connector compatibility and application performance. The 154719 is classified as active product status, ensuring ongoing availability and supply chain support.

Both parts comply with RoHS regulations and maintain unlimited moisture sensitivity classification (MSL 1), indicating no special storage or handling requirements. Export classification remains consistent at EAR99 for both variants.

The material composition difference between PA46 (521120-6) and PA66 (154719) reflects manufacturing evolution within the Mark III to Mark I series transition. Both polyamide formulations provide equivalent mechanical and thermal performance for Quick Connect/Disconnect terminal housing applications at 0.250" (6.35mm) specifications.

Selection of 154719 for new designs or replacement applications is supported by active product status, established supply availability (5870 pieces in stock versus 744 pieces for the obsolete variant), and full compliance with current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 154719 directly replace 521120-6 in existing applications?

A: Yes. Both connectors share identical specifications for terminal size (0.250" / 6.35mm), number of positions (1), gender (female receptacle), terminal type (quick connect/disconnect), mounting configuration (free hanging in-line), and color (black). They are designed for use with 0.250" (6.35mm) quick connect systems and maintain compatible housing geometry.

Q: What is the difference between the PA46 material in 521120-6 and the PA66 material in 154719?

A: Both polyamide formulations (PA46 nylon 4/6 and PA66 nylon 6/6) are suitable for connector housing applications. The material difference reflects the evolution between the Mark III series (521120-6) and Mark I series (154719). Both materials provide equivalent performance for the specified application parameters.

Q: Why is 521120-6 listed as obsolete?

A: The 521120-6 is classified as obsolete product status. The 154719 represents the active equivalent within TE Connectivity AMP Connectors' current product portfolio, ensuring continued availability and support for this connector type.

Q: Are there any compliance differences between these parts?

A: Both parts comply with RoHS regulations. The 521120-6 carries ROHS3 Compliant status, while 154719 carries RoHS Compliant status. Both maintain EAR99 export classification and unlimited moisture sensitivity level (MSL 1). REACH status is vendor undefined for both parts.

Q: What packaging is provided for each part?

A: The 521120-6 packaging specification is not defined in available documentation. The 154719 is supplied in bag packaging. Confirm specific packaging requirements with procurement specifications for your application.

Q: Are contacts included with these connectors?

A: No. Both 521120-6 and 154719 are housing-only components. Contacts are not included and must be sourced separately for complete connector assembly.

Q: What is the current inventory status?

A: The obsolete 521120-6 has 744 pieces available. The active substitute 154719 has 5870 pieces in stock, providing significantly greater supply availability for ongoing requirements.