TE Connectivity 643816-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643816-2 is a 2-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and a locking ramp fastening mechanism suitable for free-hanging in-line or right-angle mounting applications.

The 643816-2 is an active product with current inventory availability. Identifying equivalent substitute parts is necessary for supply chain continuity, alternative sourcing options, and compliance with evolving regulatory requirements such as RoHS standards.

Substiute Parts

643816-2

TE Connectivity AMP ConnectorsIn Stock: 802643816-2 Datasheet

Current PartRFQ

3-643816-2

TE Connectivity AMP ConnectorsIn Stock: 78613-643816-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 643816-2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Rectangular receptacle
• Number of positions: 2
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Contact type: Female socket
• Cable termination method: IDC
• Wire gauge: 28 AWG
• Mounting type: Free hanging (in-line) and right angle
• Fastening type: Locking ramp
• Contact finish thickness: 80.0µin (2.03µm)
• Features: Closed end
• Series: MTA-100
• Moisture sensitivity level: 1 (unlimited)

Allowable Variation:

• Contact finish material: Tin-lead or tin (both acceptable for electrical and mechanical compatibility)

The substitute part 3-643816-2 meets all mandatory matching parameters and differs only in contact finish composition (tin versus tin-lead) and RoHS compliance status, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

643816-2 (Main Part):

• Select when tin-lead contact finish is explicitly required by design specification or legacy system compatibility
• RoHS non-compliant status restricts use in applications subject to RoHS3 regulatory requirements
• Suitable for applications without RoHS compliance mandates

3-643816-2 (Substitute):

• Select as the primary choice for new designs and applications requiring RoHS3 compliance
• Tin contact finish provides equivalent electrical and mechanical performance to tin-lead
• Higher inventory availability (7755 pcs versus 718 pcs) supports supply chain reliability
• Bulk packaging option accommodates high-volume production requirements
• Both parts share identical mechanical dimensions, pitch, and IDC termination compatibility

Both parts maintain active product status and are manufactured by TE Connectivity AMP Connectors within the MTA-100 series, ensuring design continuity and interchangeability within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the 3-643816-2 directly replace the 643816-2 in existing assemblies?

A: Yes. The 3-643816-2 is mechanically and electrically compatible with the 643816-2. Both connectors share identical pitch (0.100"), position count (2), contact type (female socket), mounting configuration, and IDC termination method. The contact finish difference (tin versus tin-lead) does not affect functional compatibility.

Q: What is the significance of the contact finish difference between these parts?

A: The 643816-2 features tin-lead contact finish, while the 3-643816-2 features tin contact finish. Both finishes provide equivalent electrical conductivity and mechanical durability at the specified thickness of 80.0µin (2.03µm). The tin finish in the 3-643816-2 aligns with RoHS3 compliance requirements that restrict lead content in electronic components.

Q: Why does the 3-643816-2 have significantly higher inventory?

A: The 3-643816-2 is available in bulk packaging and carries RoHS3 compliance certification, making it the preferred choice for modern manufacturing environments and regulatory-compliant applications. This higher demand and availability reflects current industry standards.

Q: Are there any performance differences between these connectors?

A: No performance differences exist within the specified electrical and mechanical parameters. Both connectors operate identically for IDC termination with 28 AWG discrete or ribbon cable, support the same mounting configurations, and maintain identical contact finish thickness and closure design.

Q: Which part should be selected for new product designs?

A: The 3-643816-2 is the appropriate selection for new designs due to its RoHS3 compliance status, higher inventory availability, and alignment with current regulatory and manufacturing standards. The 643816-2 remains suitable only when legacy system compatibility or specific tin-lead requirements are mandated.

Q: What is the packaging difference between these parts?

A: The 643816-2 packaging specification is not provided in the technical data. The 3-643816-2 is available in bulk packaging, which supports high-volume production and component assembly operations.

Q: Are both parts suitable for moisture-sensitive applications?

A: Yes. Both connectors carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life and no special moisture control requirements during storage or handling.