TE Connectivity 640621-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640621-2 is a 2-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG wire. This connector features tin-lead contact finish and is classified as obsolete. Due to its obsolete product status and RoHS non-compliance, equivalent substitute parts are necessary for new designs and ongoing production requirements. Active alternatives with improved compliance certifications are available within the same connector family.

Substiute Parts

640621-2

TE Connectivity AMP ConnectorsIn Stock: 1041640621-2 Datasheet

Current PartRFQ

3-640621-2

TE Connectivity AMP ConnectorsIn Stock: 158633-640621-2 Datasheet

DirectRFQ

3-644563-2

TE Connectivity AMP ConnectorsIn Stock: 470853-644563-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 640621-2 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: 24 AWG
• Mounting type: Free Hanging (In-Line), Right Angle
• Fastening type: Locking ramp
• Contact finish thickness: 80.0µin (2.03µm)
• Color: White
• Moisture sensitivity level: 1 (Unlimited)

The substitute parts 3-640621-2 and 3-644563-2 meet all mandatory matching parameters. Both are active products with RoHS compliance, distinguishing them from the obsolete, non-compliant original part. The primary difference between substitutes is the contact finish material (tin versus tin-lead) and base product number designation.

Parameter Comparison

Engineering Selection Recommendations

3-640621-2 is the direct functional equivalent of 640621-2, maintaining the same base product number while achieving RoHS compliance through contact finish modification (tin instead of tin-lead). This part is recommended for applications requiring direct replacement with improved regulatory compliance. The part is active and maintains full inventory availability.

3-644563-2 is an alternative equivalent part within the MTA-100 series that meets all electrical and mechanical specifications of the original 640621-2. This part carries a different base product number (644563) but maintains identical connector geometry, termination method, and performance characteristics. This part is active with higher inventory levels and RoHS compliance.

Both substitute parts eliminate the obsolescence risk associated with the original 640621-2 and satisfy RoHS compliance requirements for new designs and production continuity. Selection between the two substitutes should be based on design documentation requirements and supplier availability preferences.

Frequently Asked Questions (FAQ)

Q: Can 3-640621-2 and 3-644563-2 be used interchangeably with 640621-2?

A: Both substitute parts are electrically and mechanically equivalent to 640621-2 across all critical parameters including connector type, position count, pitch, contact type, termination method, and wire gauge. They are direct functional replacements.

Q: What is the difference between the tin-lead finish of 640621-2 and the tin finish of the substitutes?

A: The original 640621-2 uses tin-lead contact finish, while 3-640621-2 and 3-644563-2 use tin finish. Both finishes maintain the same contact finish thickness of 80.0µin (2.03µm). The tin finish in the substitutes reflects RoHS compliance requirements.

Q: Why is 640621-2 listed as obsolete?

A: The 640621-2 is obsolete due to its RoHS non-compliant status. Active equivalent parts with RoHS compliance are available as replacements.

Q: Are there packaging differences between the original and substitute parts?

A: The original 640621-2 packaging is not specified in the documentation. Both substitute parts are supplied in bulk packaging.

Q: Can I use these connectors with wire gauges other than 24 AWG?

A: These connectors are specified for 24 AWG wire. The IDC termination method is designed for this specific gauge.

Q: What is the pitch specification and why is it important?

A: The pitch is 0.100" (2.54mm), which defines the center-to-center spacing between the two contact positions. This specification must match the mating connector and PCB layout.

Q: Are these connectors suitable for ribbon cable applications?

A: Yes, these connectors support both discrete and ribbon cable termination through the IDC method.

Q: What does the Moisture Sensitivity Level 1 (Unlimited) rating mean?

A: MSL 1 (Unlimited) indicates that these connectors have no moisture sensitivity restrictions and do not require special handling or storage conditions.