TE Connectivity 640621-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640621-8 is an 8-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as a feed-through receptacle with free hanging or right-angle mounting capability using a locking ramp fastening mechanism.

The 640621-8 is an active product with 932 units currently in stock. Equivalent substitute parts may be required due to inventory availability, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

640621-8

TE Connectivity AMP ConnectorsIn Stock: 1010640621-8 Datasheet

Current PartRFQ

3-640621-8

TE Connectivity AMP ConnectorsIn Stock: 12403-640621-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 3-640621-8 is functionally equivalent to the main part 640621-8 based on the following critical parameters that determine substitutability:

Matching Parameters:

• Connector type: Receptacle
• Number of positions: 8
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Contact type: Female Socket
• Cable termination: IDC
• Wire gauge: 24 AWG
• Wire type: Discrete or Ribbon Cable
• Mounting type: Free Hanging (In-Line), Right Angle
• Fastening type: Locking Ramp
• Series: MTA-100
• Features: Feed Through
• Moisture Sensitivity Level: 1 (Unlimited)
• Contact finish thickness: 80.0µin (2.03µm)
• Color: White
• Base product number: 640621

Differentiating Parameters:

• Contact finish: 640621-8 uses Tin-Lead; 3-640621-8 uses Tin
• Packaging: 640621-8 is unspecified; 3-640621-8 is Bulk
• RoHS Status: 640621-8 is RoHS non-compliant; 3-640621-8 is ROHS3 Compliant

The 3-640621-8 substitute maintains identical mechanical and electrical interface specifications, ensuring direct compatibility in applications where the connector footprint, pin configuration, and termination method are critical design parameters.

Parameter Comparison

Engineering Selection Recommendations

640621-8 Selection Criteria: The 640621-8 is appropriate for applications where tin-lead contact finish is specified or required by design documentation. This part maintains active product status and is available in current inventory. Selection of this part is suitable for legacy designs or applications where RoHS compliance is not a requirement.

3-640621-8 Selection Criteria: The 3-640621-8 substitute is appropriate for applications requiring ROHS3 compliance. This part is functionally equivalent in all mechanical and electrical interface parameters. The primary distinction is the contact finish composition (tin versus tin-lead) and RoHS compliance status. Higher inventory availability (1140 units) supports applications with extended lead time requirements. Bulk packaging designation indicates suitability for high-volume procurement scenarios.

Compliance Considerations: Applications subject to RoHS3 regulatory requirements must utilize the 3-640621-8 substitute. Both parts share identical ECCN and HTSUS classifications, indicating equivalent export control and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Are the 640621-8 and 3-640621-8 mechanically interchangeable?

A: Yes. Both parts are 8-position rectangular receptacles with identical pitch (0.100"), mounting type (free hanging or right angle), fastening mechanism (locking ramp), and contact configuration. The mechanical interface is fully compatible.

Q: What is the functional difference between tin-lead and tin contact finishes in these connectors?

A: The contact finish composition differs between the two parts. The 640621-8 uses tin-lead; the 3-640621-8 uses tin. Both finishes are applied at identical thickness (80.0µin). The selection between these finishes is determined by application requirements and regulatory compliance mandates.

Q: Can I substitute 3-640621-8 for 640621-8 in an existing design?

A: Substitution is permissible from a mechanical and electrical interface standpoint, as all critical parameters match. However, design documentation must be reviewed to confirm that the contact finish change and RoHS3 compliance status align with application requirements.

Q: What does RoHS3 compliance mean for the 3-640621-8?

A: ROHS3 compliance indicates that the 3-640621-8 meets the Restriction of Hazardous Substances Directive requirements. The 640621-8 is designated as RoHS non-compliant. Applications subject to RoHS regulatory frameworks must use the 3-640621-8.

Q: Are there packaging differences between these parts?

A: The 640621-8 packaging is unspecified in available documentation. The 3-640621-8 is supplied in bulk packaging. Packaging selection may influence procurement decisions for high-volume applications.

Q: Do both parts support IDC termination with 24 AWG cable?

A: Yes. Both the 640621-8 and 3-640621-8 are designed for IDC termination with 24 AWG discrete or ribbon cable. The termination method and wire gauge specifications are identical.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.