TE Connectivity 644759-6 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644759-6 is a vertical rectangular connector header designed for through-hole mounting applications. This component is a 6-position, single-row connector with 0.156" (3.96mm) pitch spacing, classified within the MTA-156 series. The connector features shrouded design with friction lock fastening and is rated for 600VAC operation across an industrial temperature range of -55°C to 105°C.

The 644759-6 carries an obsolete product status. Locating equivalent and substitute components is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector specification.

Substiute Parts

644759-6

TE Connectivity AMP ConnectorsIn Stock: 1067644759-6 Datasheet

Current PartRFQ

3-644759-6

TE Connectivity AMP ConnectorsIn Stock: 11983-644759-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 644759-6 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 6
• Number of Rows: 1
• Pitch - Mating: 0.156" (3.96mm)
• Mounting Type: Through Hole
• Termination: Solder
• Shrouding: Shrouded - 1 Wall
• Fastening Type: Friction Lock
• Voltage Rating: 600VAC
• Operating Temperature Range: -55°C ~ 105°C
• Material Flammability Rating: UL94 V-0
• Series: MTA-156

The substitute part 3-644759-6 maintains full electrical and mechanical compatibility with the original 644759-6 specification. Both components share identical connector architecture, contact configuration, and performance ratings. The primary distinction between these parts relates to product status and regulatory compliance classification.

Parameter Comparison

Engineering Selection Recommendations

The 3-644759-6 serves as the direct substitute for the obsolete 644759-6 connector header. Both components are manufactured by TE Connectivity within the MTA-156 series and maintain identical electrical and mechanical specifications across all critical parameters.

Product Status Consideration: The 644759-6 is classified as obsolete, while the 3-644759-6 maintains active product status. This distinction is significant for long-term supply chain planning and component availability.

Regulatory Compliance: The 3-644759-6 is RoHS compliant, whereas the 644759-6 is RoHS non-compliant. This difference reflects the post-compliance manufacturing date of the substitute part. Both components carry identical UL94 V-0 flammability ratings and share equivalent electrical performance characteristics.

Contact Finish Specification: The primary technical difference between these parts is the post-contact finish. The 644759-6 specifies Tin-Lead finish on the post contacts, while the 3-644759-6 specifies Tin finish. This change aligns with RoHS compliance requirements eliminating lead content. The mating contact finish remains Gold for both parts, maintaining equivalent signal integrity and connection reliability.

Functional Equivalence: The 3-644759-6 is electrically and mechanically interchangeable with the 644759-6 for all applications requiring a 6-position, 0.156" pitch, through-hole mounted header connector with friction lock fastening and 600VAC rating.

Frequently Asked Questions (FAQ)

Q: Can the 3-644759-6 be used as a direct replacement for the 644759-6 in existing designs?

A: Yes. The 3-644759-6 is electrically and mechanically equivalent to the 644759-6. Both components share identical connector architecture, contact configuration, pitch spacing, mounting type, and performance ratings. The substitute part is suitable for direct replacement in applications utilizing the original 644759-6 specification.

Q: What is the significance of the RoHS compliance difference between these parts?

A: The 644759-6 is RoHS non-compliant, while the 3-644759-6 is RoHS compliant. This reflects manufacturing date and regulatory requirements at the time of production. The RoHS compliance status of the 3-644759-6 makes it suitable for applications subject to RoHS regulations. Both parts meet identical electrical and mechanical performance standards.

Q: Why does the contact finish differ between the 644759-6 and 3-644759-6?

A: The post-contact finish differs due to RoHS compliance requirements. The 644759-6 uses Tin-Lead finish, while the 3-644759-6 uses Tin finish. This change eliminates lead content in compliance with RoHS directives. The mating contact finish remains Gold for both parts. This modification does not affect electrical performance or connection reliability.

Q: Are there any packaging differences between these parts?

A: The 644759-6 packaging specification is not provided in the available data. The 3-644759-6 is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: What is the operating temperature range for both connector headers?

A: Both the 644759-6 and 3-644759-6 operate across the temperature range of -55°C to 105°C. This specification is identical for both parts.

Q: What voltage and current ratings apply to these connectors?

A: Both connectors are rated for 600VAC operation. Current rating varies by wire gauge used in the application. Refer to wire gauge specifications and application requirements to determine appropriate current capacity.

Q: Are these connectors suitable for industrial applications?

A: Yes. Both the 644759-6 and 3-644759-6 are specified for general purpose and industrial applications. The UL94 V-0 flammability rating and operating temperature range support industrial deployment requirements.

Q: What is the pitch spacing of these connector headers?

A: Both connectors feature 0.156" (3.96mm) pitch spacing. This specification is consistent across the MTA-156 series and is identical for both the main part and substitute.