TE Connectivity 644456-3 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644456-3 is a vertical rectangular connector header designed for through-hole mounting applications. This component is a 3-position, single-row header with 0.100" (2.54mm) pitch spacing, classified within the MTA-100 series. The connector features male pin contacts with tin-lead plating and is rated for 250VAC operation across a temperature range of -55°C to 105°C.

The 644456-3 carries an obsolete product status. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and legacy system requirements where this connector type remains in use.

Substiute Parts

644456-3

TE Connectivity AMP ConnectorsIn Stock: 1176644456-3 Datasheet

Current PartRFQ

3-644456-3

TE Connectivity AMP ConnectorsIn Stock: 51693-644456-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 644456-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 3
• Number of Rows: 1
• Pitch - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Termination: Solder
• Operating Temperature Range: -55°C ~ 105°C
• Voltage Rating: 250VAC
• Material Flammability Rating: UL94 V-0
• Series: MTA-100

The substitute part 3-644456-3 maintains full electrical and mechanical compatibility with the original 644456-3 across all critical parameters. Both components share identical connector architecture, contact configuration, pitch spacing, and thermal/electrical ratings. The primary distinction between these parts is product status and contact finish composition.

Parameter Comparison

Engineering Selection Recommendations

The 3-644456-3 is the direct substitute for the obsolete 644456-3 connector header. Both components are manufactured by TE Connectivity within the MTA-100 series and maintain identical electrical and mechanical specifications across all critical parameters including pitch, contact configuration, temperature rating, and voltage rating.

The primary distinction between these parts is regulatory compliance status. The 3-644456-3 carries ROHS3 compliance certification, whereas the 644456-3 is RoHS non-compliant. The 3-644456-3 also features tin contact finish compared to the tin-lead finish of the original part. These differences do not affect functional compatibility in applications where the connector is used.

The 3-644456-3 maintains active product status with higher inventory availability (5110 pieces in stock versus 1109 pieces for the obsolete variant), supporting long-term supply chain reliability for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Are the 644456-3 and 3-644456-3 electrically interchangeable?

A: Yes. Both connectors share identical electrical specifications including 250VAC voltage rating, -55°C to 105°C operating temperature range, and equivalent contact materials and finishes. The contact finish composition difference (tin-lead versus tin) does not affect electrical performance in standard applications.

Q: What is the difference between the contact finishes?

A: The 644456-3 uses tin-lead plating while the 3-644456-3 uses tin plating. Both finishes are applied at 150.0µin (3.81µm) thickness. The tin finish of the substitute part aligns with modern RoHS3 compliance requirements and does not compromise electrical or mechanical performance.

Q: Can I use the 3-644456-3 in place of the 644456-3 in existing designs?

A: Yes. The 3-644456-3 is mechanically and electrically compatible with the 644456-3. Both connectors feature identical pitch spacing (0.100"), contact geometry, mounting type (through-hole solder), and insulation dimensions. Direct substitution is supported without design modification.

Q: Why is the 644456-3 listed as obsolete?

A: The 644456-3 has been superseded by the 3-644456-3 within the TE Connectivity product line. The newer variant incorporates RoHS3 compliance and tin contact finish, reflecting current regulatory and manufacturing standards.

Q: What is the significance of the RoHS3 compliance on the 3-644456-3?

A: RoHS3 compliance indicates the substitute part meets current European Union Restriction of Hazardous Substances regulations. This certification is relevant for applications subject to environmental and regulatory compliance requirements. The original 644456-3 does not carry this certification.

Q: Are there any packaging differences between these parts?

A: The 3-644456-3 is supplied in bulk packaging, while packaging information for the 644456-3 is not specified in the available data. This distinction affects procurement and inventory management but does not impact component functionality.

Q: What is the MSL rating for these connectors?

A: Both the 644456-3 and 3-644456-3 carry an MSL rating of 1 (Unlimited), indicating these components have unlimited shelf life and do not require moisture-controlled storage or handling procedures.