TE Connectivity 647166-4 Rectangular Connector Header: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 647166-4 is a surface mount rectangular connector header designed for board-to-cable/wire applications. This component is a 4-position, single-row header with 0.100" (2.54mm) pitch spacing, featuring shrouded design with friction lock fastening and solder termination. The part operates across an industrial temperature range of -55°C to 105°C and is rated for 250VAC applications.

The 647166-4 carries an obsolete product status, making identification of equivalent substitute components essential for ongoing design support, maintenance, and production continuity. Active equivalent parts within the MTA-100 series provide direct functional replacement while maintaining full electrical and mechanical compatibility.

Substiute Parts

647166-4

TE Connectivity AMP ConnectorsIn Stock: 911647166-4 Datasheet

Current PartRFQ

3-647166-4

TE Connectivity AMP ConnectorsIn Stock: 72523-647166-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 647166-4 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:

Electrical Parameters: Contact type (male pin), number of positions (4), pitch spacing (0.100"/2.54mm), voltage rating (250VAC), and operating temperature range (-55°C to 105°C).

Mechanical Parameters: Mounting type (surface mount), connector style (board to cable/wire), shrouding configuration (shrouded - 1 wall), fastening mechanism (friction lock), termination method (solder), and insulation material (polyamide/nylon 4/6).

Compliance Parameters: RoHS compliance status, material flammability rating (UL94 V-0), and series designation (MTA-100).

The substitute part 3-647166-4 satisfies all substitution criteria through complete parameter alignment with the main part, with the exception of contact finish specification and product status transition from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The 3-647166-4 is the direct equivalent substitute for the obsolete 647166-4. Both components are manufactured by TE Connectivity within the MTA-100 series and maintain complete electrical and mechanical compatibility across all critical parameters.

Product Status Consideration: The 647166-4 is classified as obsolete, while the 3-647166-4 maintains active product status. Selection of the active equivalent ensures continued availability, manufacturing support, and compliance with current industry standards.

Compliance and Certification: Both parts carry identical RoHS compliance certification and UL94 V-0 flammability rating, confirming suitability for regulated applications. Moisture sensitivity level (MSL 1 - Unlimited) indicates no special handling requirements during storage or assembly.

Contact Finish Specification: The main part specifies Tin-Lead contact finish, while the substitute specifies Tin finish. This transition reflects industry-wide movement toward lead-free manufacturing practices. The functional performance and electrical characteristics remain equivalent for general-purpose applications within the specified voltage and temperature parameters.

Packaging Consideration: The substitute part is supplied in bulk packaging, whereas the main part packaging specification is not provided. Bulk packaging is standard for active production components and does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 3-647166-4 be used as a direct replacement for the 647166-4 in existing designs?

A: Yes. The 3-647166-4 is electrically and mechanically equivalent to the 647166-4 across all critical parameters including connector type, position count, pitch spacing, mounting configuration, temperature rating, and voltage rating. Both components are designed for identical board-to-cable/wire applications.

Q: What is the significance of the contact finish difference between Tin-Lead and Tin?

A: The contact finish difference reflects manufacturing process evolution. Tin finish on the 3-647166-4 represents lead-free manufacturing compliance. Both finishes provide equivalent electrical conductivity and contact reliability for the specified 250VAC, general-purpose applications. The functional performance in friction lock mating cycles and solder termination remains unchanged.

Q: Why is the 647166-4 listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 3-647166-4 serves as the current production equivalent within the MTA-100 series, ensuring design continuity and supply chain availability for applications requiring this connector type.

Q: Are there any differences in the shrouding or mechanical dimensions between these parts?

A: No. Both parts feature identical shrouded design (1 wall), contact length (0.290"/7.37mm), insulation height (0.347"/8.81mm), and contact shape (square). Surface mount configuration and friction lock fastening are identical.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity. Standard handling and storage procedures apply without special environmental controls or desiccant packaging requirements.

Q: Can these connectors be used in high-temperature applications?

A: Yes. Both the 647166-4 and 3-647166-4 are rated for continuous operation across -55°C to 105°C, suitable for industrial and general-purpose applications within this temperature envelope.

Q: Is the bulk packaging of the 3-647166-4 compatible with automated assembly processes?

A: Bulk packaging is standard for automated pick-and-place assembly operations. Packaging format does not affect component functionality or electrical performance.