TE Connectivity 643816-7 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643816-7 is a 7-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 and is classified as a closed-end receptacle with a 0.100" (2.54mm) pitch. The part is currently active in production with 824 pieces available in inventory.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging configurations are required, or when compliance requirements differ between applications. The substitute part listed maintains functional compatibility while offering different contact finish specifications and improved regulatory compliance status.

Substiute Parts

643816-7

TE Connectivity AMP ConnectorsIn Stock: 890643816-7 Datasheet

Current PartRFQ

3-643816-7

TE Connectivity AMP ConnectorsIn Stock: 25583-643816-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the TE Connectivity 643816-7 and its equivalent part 3-643816-7 is valid based on the following criteria:

Critical Matching Parameters:

• Connector type (Receptacle)
• Number of positions (7)
• Pitch specification (0.100" / 2.54mm)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge rating (28 AWG)
• Mounting configuration (Free Hanging In-Line, Right Angle)
• Fastening mechanism (Locking Ramp)
• Row configuration (Single row)
• Contact finish thickness (80.0µin / 2.03µm)
• Series designation (MTA-100)
• Moisture sensitivity level (MSL 1 - Unlimited)

Differentiating Parameters:

• Contact finish material (Tin-Lead versus Tin)
• RoHS compliance status
• Packaging configuration (standard versus bulk)
• Inventory availability

Both parts share the same base product number (643816) and maintain identical electrical and mechanical interfaces, confirming direct substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Selection Criteria Based on Compliance and Status:

The 643816-7 and 3-643816-7 are functionally equivalent rectangular receptacle connectors suitable for direct substitution in applications requiring 7-position IDC termination at 28 AWG with 0.100" pitch spacing.

For RoHS-Compliant Applications: Select part number 3-643816-7. This substitute features tin contact finish and carries RoHS Compliant status, meeting regulatory requirements for applications subject to RoHS directives. Both parts maintain identical electrical and mechanical specifications.

For Non-RoHS-Restricted Applications: Either part number is acceptable. The 643816-7 features tin-lead contact finish and is RoHS non-compliant. The 3-643816-7 provides an alternative with tin finish and RoHS compliance.

Inventory Considerations: The 3-643816-7 substitute maintains higher inventory availability (2476 pieces) compared to the primary part (824 pieces), providing supply chain flexibility.

Both parts are active products with identical MSL ratings (1 - Unlimited), ECCN classification (EAR99), and HTSUS codes, confirming compatibility across regulatory and logistics frameworks.

Frequently Asked Questions (FAQ)

Q: Can the 3-643816-7 directly replace the 643816-7 in existing designs?

A: Yes. Both connectors share identical electrical and mechanical specifications including connector type, position count, pitch, contact configuration, termination method, and wire gauge. The primary difference is contact finish material (tin versus tin-lead) and RoHS compliance status. Direct substitution is valid for applications where these differences do not impose constraints.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: The contact finish material affects corrosion resistance and solderability characteristics. Tin-lead (643816-7) provides traditional performance characteristics. Tin (3-643816-7) is the RoHS-compliant alternative. Both finishes are applied at identical thickness (80.0µin / 2.03µm) and maintain equivalent electrical performance for IDC applications.

Q: Are these connectors suitable for ribbon cable applications?

A: Yes. Both the 643816-7 and 3-643816-7 support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method at 28 AWG wire gauge.

Q: What does the "Closed End" feature indicate?

A: The closed-end design prevents accidental contact exposure and provides strain relief for the cable termination point. This feature is identical across both part numbers.

Q: How do the packaging differences affect part selection?

A: The 643816-7 is supplied in standard packaging, while the 3-643816-7 is supplied in bulk packaging. Packaging configuration does not affect connector functionality or compatibility. Selection depends on procurement volume requirements and inventory management practices.

Q: What is the MSL rating and why is it relevant?

A: Both connectors carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture sensitivity concerns. This classification applies to both the 643816-7 and 3-643816-7, confirming equivalent storage and handling requirements.

Q: Are both parts currently in production?

A: Yes. Both the 643816-7 and 3-643816-7 maintain Active product status, confirming ongoing manufacturing availability and long-term supply viability.