TE Connectivity AMP Connectors 644861-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644861-3 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 3 positions at 0.100" (2.54mm) pitch, suitable for board-to-cable/wire connections in general-purpose applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

644861-3

TE Connectivity AMP ConnectorsIn Stock: 723644861-3 Datasheet

Current PartRFQ

2-644861-3

TE Connectivity AMP ConnectorsIn Stock: 386862-644861-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644861-3 connector is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (3)
• Pitch specification (0.100" / 2.54mm)
• Voltage rating (250VAC)
• Operating temperature range (-55°C ~ 105°C)

Mechanical Compatibility Parameters:

• Mounting type (Through Hole)
• Shrouding configuration (Shrouded - 4 Wall)
• Contact shape (Square)
• Insulation material (Polyester)
• Termination method (Solder)
• Fastening type (Friction Lock)

Physical Dimensions:

• Contact length - mating (0.200" / 5.08mm)
• Contact length - post (0.140" / 3.56mm)
• Overall contact length (0.440" / 11.18mm)
• Insulation height (0.410" / 10.41mm)

The substitute part 2-644861-3 maintains full equivalence across all electrical, mechanical, and dimensional parameters. The primary distinction between the main part and its substitute relates to product status (obsolete versus active), packaging configuration, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 2-644861-3 connector serves as the direct active equivalent to the obsolete 644861-3 part. Both connectors maintain identical electrical and mechanical specifications across all critical parameters, ensuring functional interchangeability in board-to-cable/wire connection applications.

Product Status Consideration: The 644861-3 is classified as obsolete, while the 2-644861-3 maintains active product status with significantly higher inventory availability (38,654 pieces versus 685 pieces). For new designs and ongoing production requirements, the 2-644861-3 is the appropriate selection.

Compliance Differentiation: The substitute part 2-644861-3 is RoHS Compliant and carries REACH Unaffected status, whereas the main part 644861-3 is RoHS non-compliant with vendor-undefined REACH status. This distinction is relevant for applications subject to environmental compliance requirements.

Contact Finish Specification: The main part features Tin-Lead contact finish, while the substitute part utilizes Tin contact finish. Both finishes are compatible with solder termination processes and maintain equivalent electrical performance within the specified operating temperature range of -55°C to 105°C.

Packaging and Availability: The substitute part is supplied in bulk packaging configuration, supporting higher-volume production requirements. The active product status ensures continued availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Are the 644861-3 and 2-644861-3 connectors mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including mounting type (through hole), shrouding configuration (shrouded - 4 wall), contact dimensions, and insulation height. They are directly interchangeable in PCB applications.

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

A: Both contact finishes are compatible with solder termination and provide equivalent electrical performance. The Tin finish in the substitute part reflects modern manufacturing practices and RoHS compliance requirements. The change does not affect functional compatibility or electrical characteristics.

Q: Why is the 2-644861-3 recommended over the 644861-3?

A: The 2-644861-3 is the active product with superior inventory availability and current compliance certifications (RoHS Compliant, REACH Unaffected). The 644861-3 is obsolete with limited stock. For production continuity and regulatory compliance, the 2-644861-3 is the appropriate selection.

Q: Can the 2-644861-3 be used in applications originally designed for the 644861-3?

A: Yes. The substitute part maintains full electrical and mechanical equivalence across all specified parameters. It is suitable for direct replacement in existing designs without modification.

Q: What is the pitch specification for these connectors?

A: Both connectors feature a 0.100" (2.54mm) mating pitch, which is the standard spacing between contact positions in the MTA-100 series.

Q: Are there any temperature or voltage limitations when using the 2-644861-3 as a substitute?

A: No. The substitute part maintains identical operating temperature range (-55°C to 105°C) and voltage rating (250VAC) as the original part. There are no additional limitations.

Q: What is the shrouding configuration of these connectors?

A: Both connectors feature shrouded design with 4-wall configuration, providing mechanical protection and alignment guidance during mating operations.

Q: How does the Moisture Sensitivity Level (MSL) rating affect component handling?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling procedures apply without special moisture control requirements.