TE Connectivity AMP Connectors 776178-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 776178-4 is a 16-position rectangular connector housing designed for plug applications with a 2.50mm pitch. This component is classified as Obsolete, necessitating identification of active equivalent parts for ongoing design and procurement requirements. The connector features a green polybutylene terephthalate (PBT) housing with female socket contacts, latch lock fastening, and free-hanging in-line mounting configuration. Contacts are supplied separately and not included with the housing.

Substiute Parts

776178-4

TE Connectivity AMP ConnectorsIn Stock: 769776178-4 Datasheet

Current PartRFQ

175966-2

TE Connectivity AMP ConnectorsIn Stock: 1000114175966-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 776178-4 is based on electrical and mechanical parameter alignment within the rectangular connector category. The primary substitute, TE Connectivity AMP Connectors 175966-2, maintains functional equivalence through identical specifications in the following critical parameters:

• Connector Type: Plug
• Contact Type: Female Socket
• Number of Positions: 16
• Pitch: 0.098" (2.50mm)
• Number of Rows: 2
• Row Spacing: 0.205" (5.20mm)
• Mounting Type: Free Hanging (In-Line)
• Contact Termination: Crimp
• Fastening Type: Latch Lock
• Insulation Material: Polybutylene Terephthalate (PBT)

The substitute part differs in color specification (black versus green) and product status (active versus obsolete). These differences do not affect electrical or mechanical compatibility when the connector housing color is not a functional requirement of the application.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 175966-2 serves as a direct functional substitute for the obsolete 776178-4 model. Selection of the substitute part is supported by the following engineering considerations:

Product Status: The 175966-2 maintains active product status with TE Connectivity, ensuring continued availability and supply chain reliability. The 776178-4 is classified as obsolete, creating procurement risk for new designs and production requirements.

Compliance Certifications: Both parts maintain RoHS compliance. The substitute part carries ROHS3 certification, representing current regulatory compliance standards. Both parts achieve Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Electrical and Mechanical Equivalence: All critical connector parameters remain identical between the main part and substitute, including contact configuration, pitch spacing, mounting methodology, and termination type. These parameters determine functional compatibility within rectangular connector applications.

Color Differentiation: The substitute part features black housing compared to the green housing of the original part. This difference is cosmetic and does not affect electrical performance or mechanical fit. Color selection should be evaluated based on application-specific requirements or design documentation.

Operating Temperature: The substitute part specifies an operating temperature range of -30°C to 105°C. The original part does not provide this specification. Applications requiring temperature performance confirmation should reference the substitute part's documented range.

Frequently Asked Questions (FAQ)

Q: Can the 175966-2 substitute directly replace the 776178-4 in existing designs?

A: Yes. The 175966-2 maintains identical electrical and mechanical specifications across all critical connector parameters including contact type, position count, pitch, row configuration, mounting type, and fastening mechanism. Direct substitution is supported from a functional compatibility standpoint.

Q: Does the color difference between green (776178-4) and black (175966-2) affect connector performance?

A: No. Housing color is a cosmetic attribute and does not affect electrical performance, mechanical fit, or contact integrity. Color selection should be based on application documentation or design requirements only.

Q: Are the contacts included with either connector housing?

A: No. Both the 776178-4 and 175966-2 are supplied as housings only. Contacts must be sourced and crimped separately. Ensure that selected contacts are compatible with the 2.50mm pitch and female socket configuration.

Q: What is the significance of the ROHS3 compliance on the 175966-2 compared to RoHS compliance on the 776178-4?

A: ROHS3 represents the current regulatory standard for restriction of hazardous substances. Both parts meet RoHS requirements. The substitute part's ROHS3 designation indicates alignment with current environmental compliance standards.

Q: Why is the 776178-4 classified as obsolete?

A: Obsolete status indicates that TE Connectivity has discontinued active production and support for this part number. The 175966-2 represents the active equivalent within the product line, ensuring ongoing availability and manufacturer support.

Q: Are there any packaging differences between the two parts?

A: The 776178-4 packaging specification is not provided. The 175966-2 is supplied in bulk packaging. Packaging format should be confirmed with the supplier based on procurement volume and handling requirements.

Q: What is Moisture Sensitivity Level 1 (Unlimited)?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity constraints. The part can be stored and handled without special moisture control measures or floor life limitations.

Q: Can I use the 175966-2 in applications originally designed for the 776178-4?

A: Yes, provided that the application does not have specific color requirements for the connector housing. All electrical and mechanical parameters are identical, supporting functional equivalence in the application circuit.