TE Connectivity AMP Connectors 3-644766-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-644766-8 is a rectangular connector header designed for through-hole mounting applications. This shrouded, single-wall 8-position connector operates at 0.156" (3.96mm) pitch and is part of the MTA-156 series. The connector features male pins with gold-plated mating contacts and tin-plated posts, suitable for board-to-cable and wire applications in general purpose and industrial environments. The product maintains active status with RoHS compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required within compatible electrical and mechanical parameters.

Substiute Parts

3-644766-8

TE Connectivity AMP ConnectorsIn Stock: 7853-644766-8 Datasheet

Current PartRFQ

0026482085

MolexIn Stock: 15740026482085 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 3-644766-8 are identified based on strict alignment with the following critical parameters:

Mating Pitch: 0.156" (3.96mm) - This parameter is non-negotiable for mechanical and electrical compatibility. All substitute parts must maintain identical pitch spacing.

Number of Positions and Rows: 8 positions in a single row configuration. Substitute parts must match this exact position count and row arrangement.

Connector Type and Contact Type: Header configuration with male pins. The substitute must function as a header with male pin contacts.

Mounting and Termination: Through-hole mounting with solder termination. Substitute parts must support identical mounting methodology and solder-based termination.

Shrouding Configuration: Shrouded with 1 wall design. This mechanical feature must be preserved in substitute parts.

Fastening Type: Friction lock mechanism. Substitute parts must employ identical fastening methodology.

Contact Shape: Square contact geometry. This parameter ensures proper mating with corresponding receptacles.

Flammability and Compliance: UL94 V-0 material rating and RoHS compliance are mandatory for equivalent substitution in regulated applications.

The Molex 0026482085 connector satisfies all critical substitution parameters while maintaining functional equivalence for board-to-cable and board-to-board applications.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 3-644766-8 is the primary specification for applications requiring MTA-156 series connectors with confirmed operating temperature range of -55°C to 105°C and 600VAC voltage rating. This part maintains active product status with established supply chain availability (733 pieces in stock). Selection of this part is appropriate when design documentation explicitly references TE Connectivity AMP Connectors or MTA-156 series specifications.

Molex 0026482085 serves as a functional equivalent for applications where connector pitch, position count, mounting methodology, and contact configuration are the primary design constraints. This part is part of the KK396 and 41671 series and maintains active product status with higher inventory availability (1557 pieces in stock). The Molex connector satisfies all critical mechanical and electrical parameters for board-to-cable and board-to-board applications. Both parts maintain RoHS compliance and UL94 V-0 flammability ratings. Selection of the Molex substitute is appropriate when design flexibility permits alternative manufacturers or when supply chain considerations favor the Molex option.

Compliance Considerations: Both parts are RoHS compliant, REACH unaffected, and classified under identical ECCN and HTSUS codes, ensuring regulatory equivalence for industrial and general purpose applications.

Frequently Asked Questions (FAQ)

Q: What determines whether the Molex 0026482085 can substitute for the TE Connectivity 3-644766-8?

A: Substitution is determined by matching critical parameters: 0.156" (3.96mm) mating pitch, 8-position single-row configuration, male pin contact type, through-hole solder termination, shrouded 1-wall design, friction lock fastening, square contact geometry, and UL94 V-0 flammability rating. Both parts satisfy these parameters.

Q: Are there differences in contact dimensions between these connectors?

A: Yes. The TE Connectivity 3-644766-8 has a mating contact length of 0.400" (10.16mm) and overall contact length of 0.700" (17.78mm). The Molex 0026482085 has a mating contact length of 0.450" (11.43mm) and overall contact length of 0.750" (19.05mm). These dimensional differences may affect mating depth and board-to-connector spacing in constrained layouts.

Q: What is the difference between the insulation materials used in these connectors?

A: The TE Connectivity 3-644766-8 uses thermoplastic, glass-filled insulation material. The Molex 0026482085 uses polyester insulation material. Both materials achieve UL94 V-0 flammability rating. Material selection may influence mechanical properties and environmental resistance in specific applications.

Q: Do both connectors support the same voltage and current ratings?

A: The TE Connectivity 3-644766-8 specifies 600VAC voltage rating with current rating varying by wire gauge. The Molex 0026482085 does not specify voltage or current ratings in the provided data. For applications with defined voltage or current requirements, the TE Connectivity part provides explicit electrical specifications.

Q: What is the significance of the "Breakaway" feature on the Molex connector?

A: The Molex 0026482085 includes a breakaway feature, allowing individual positions to be separated if required. The TE Connectivity 3-644766-8 does not include this feature. This difference does not affect standard mating applications but provides additional flexibility for the Molex option in applications requiring position-level modularity.

Q: Are the contact finish thicknesses equivalent between these parts?

A: No. The TE Connectivity 3-644766-8 specifies 15.0µin (0.38µm) gold plating on mating contacts. The Molex 0026482085 specifies 20.0µin (0.51µm) gold plating on mating contacts. The Molex part provides thicker gold plating, which may offer enhanced corrosion resistance in certain environments.

Q: Can these connectors be used interchangeably in existing designs?

A: Mechanical and electrical interchangeability is supported for the critical mating parameters. However, dimensional differences in contact length and insulation height may require PCB layout verification. Design documentation should be reviewed to confirm that dimensional variations do not conflict with board-to-connector spacing or mating depth requirements.

Q: What is the operating temperature range for the Molex connector?

A: The operating temperature range for the Molex 0026482085 is not specified in the provided data. The TE Connectivity 3-644766-8 specifies -55°C to 105°C. For applications with defined temperature requirements, the TE Connectivity part provides explicit thermal specifications.

Q: Are both connectors RoHS compliant?

A: Yes. The TE Connectivity 3-644766-8 is RoHS Compliant. The Molex 0026482085 is ROHS3 Compliant. Both parts meet RoHS requirements and are suitable for regulated applications requiring lead-free construction.