TE Connectivity 644760-4 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644760-4 is a vertical rectangular connector header designed for through-hole mounting applications. This connector features a 4-position configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable/wire connections in general purpose and industrial applications. The part operates across a temperature range of -55°C to 105°C with a 600VAC voltage rating.

The 644760-4 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this connector.

Substiute Parts

644760-4

TE Connectivity AMP ConnectorsIn Stock: 923644760-4 Datasheet

Current PartRFQ

3-644760-4

TE Connectivity AMP ConnectorsIn Stock: 7493-644760-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 644760-4 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 4
• Pitch - Mating: 0.156" (3.96mm)
• Mounting Type: Through Hole
• Shrouding: Shrouded - 1 Wall
• Termination: Solder
• Operating Temperature Range: -55°C ~ 105°C
• Voltage Rating: 600VAC
• Series: MTA-156

The substitute part 3-644760-4 maintains complete electrical and mechanical compatibility with the original 644760-4 across all specified parameters. The primary distinction between these parts is product status and RoHS compliance classification.

Parameter Comparison

Engineering Selection Recommendations

The 3-644760-4 serves as the direct substitute for the obsolete 644760-4. Both parts maintain identical electrical and mechanical specifications across all critical parameters, ensuring functional interchangeability in existing applications.

The primary distinction between these parts is product lifecycle status and regulatory compliance:

644760-4 (Original): Obsolete product status with RoHS non-compliant classification. This part is no longer actively manufactured or supported by TE Connectivity.

3-644760-4 (Substitute): Active product status with RoHS Compliant classification. This part is currently manufactured and supported, providing long-term supply chain availability and regulatory alignment with modern environmental standards.

The contact finish on the post differs between the two parts: the original uses Tin-Lead while the substitute uses Tin. This difference is compatible with standard solder reflow processes and does not impact electrical or mechanical performance.

For new designs or ongoing production requiring this connector type, the 3-644760-4 is the appropriate selection. For legacy applications currently using the 644760-4, direct substitution with the 3-644760-4 is electrically and mechanically valid.

Frequently Asked Questions (FAQ)

Q: Are the 644760-4 and 3-644760-4 electrically interchangeable?

A: Yes. Both parts maintain identical electrical specifications including 600VAC voltage rating, operating temperature range of -55°C to 105°C, and current rating that varies by wire gauge. The gold-plated mating contacts and copper alloy material are identical across both parts.

Q: What is the difference between Tin-Lead and Tin contact finish on the post?

A: The original 644760-4 uses Tin-Lead finish while the 3-644760-4 uses Tin finish on the contact post. Both finishes are compatible with standard solder reflow processes and do not affect the connector's electrical performance or mechanical function.

Q: Can I use the 3-644760-4 as a direct replacement in existing PCB designs?

A: Yes. The 3-644760-4 maintains identical mechanical dimensions, mounting type (through-hole), and pitch spacing (0.156" / 3.96mm) as the original 644760-4. No PCB layout modifications are required.

Q: Why is the 644760-4 listed as obsolete?

A: The 644760-4 has reached end-of-life status in TE Connectivity's product portfolio. The 3-644760-4 is the active replacement part that maintains full compatibility while offering current manufacturing support and RoHS compliance.

Q: What does RoHS Compliant mean for the 3-644760-4?

A: RoHS Compliant indicates that the 3-644760-4 meets the Restriction of Hazardous Substances directive, limiting the use of specific hazardous materials. This classification aligns with modern environmental and regulatory requirements for electronic components.

Q: Are there any packaging differences between these parts?

A: The 644760-4 packaging specification is not provided in the technical data. The 3-644760-4 is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: What is the MTA-156 series?

A: MTA-156 is the TE Connectivity product series designation for rectangular connectors with 0.156" (3.96mm) pitch spacing. Both the 644760-4 and 3-644760-4 belong to this series.

Q: Can I mix 644760-4 and 3-644760-4 parts in the same application?

A: Yes. Both parts are mechanically and electrically compatible and can be used interchangeably within the same application or assembly.