TE Connectivity AMP Connectors 644754-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644754-8 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features an 8-position configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable/wire connections in general purpose and industrial applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and field service requirements.

Substiute Parts

644754-8

TE Connectivity AMP ConnectorsIn Stock: 1072644754-8 Datasheet

Current PartRFQ

3-644754-8

TE Connectivity AMP ConnectorsIn Stock: 10383-644754-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of rectangular connector headers is determined by strict equivalence across electrical and mechanical parameters. The primary substitution criteria for the 644754-8 include:

Critical Matching Parameters:

• Connector type (Header)
• Number of positions (8)
• Pitch spacing (0.156" / 3.96mm)
• Mounting configuration (Through Hole, Right Angle)
• Contact type (Male Pin)
• Voltage rating (600VAC)
• Operating temperature range (-55°C ~ 105°C)
• Material flammability rating (UL94 V-0)
• Shrouding configuration (Shrouded - 1 Wall)
• Termination method (Solder)

The substitute part 3-644754-8 maintains full electrical and mechanical compatibility with the original 644754-8 across all critical parameters. The primary distinction between these parts is product status and regulatory compliance, with the substitute representing an active production alternative featuring RoHS compliance and improved contact finish specifications.

Parameter Comparison

Engineering Selection Recommendations

The 3-644754-8 serves as the direct active equivalent to the obsolete 644754-8. Both parts maintain identical electrical and mechanical specifications across all critical connector parameters, including pitch spacing, contact configuration, voltage rating, and operating temperature range.

The primary distinction between these parts is regulatory and product lifecycle status. The 3-644754-8 is an active production component with RoHS compliance certification, whereas the 644754-8 is classified as obsolete and RoHS non-compliant. The contact finish specification differs between the two parts: the main part features Tin-Lead plating, while the substitute features Tin plating. This change aligns with RoHS compliance requirements that restrict lead content in electronic components.

For new designs and ongoing production requirements, the 3-644754-8 is the appropriate selection. For legacy system maintenance where the original 644754-8 is specified, the 3-644754-8 provides full functional and mechanical compatibility while offering improved regulatory compliance and active manufacturing support.

Frequently Asked Questions (FAQ)

Q: Are the 644754-8 and 3-644754-8 mechanically interchangeable?

A: Yes. Both parts share identical mounting configurations, pitch spacing (0.156" / 3.96mm), contact lengths, and insulation dimensions. The parts are mechanically interchangeable in through-hole, right-angle mounting applications.

Q: What is the difference in contact finish between these parts?

A: The 644754-8 features Tin-Lead contact plating, while the 3-644754-8 features Tin plating. This change reflects RoHS compliance requirements. Both finishes provide equivalent electrical performance and solder compatibility.

Q: Can the 3-644754-8 be used as a direct replacement for the obsolete 644754-8?

A: Yes. The 3-644754-8 maintains full electrical and mechanical compatibility with the 644754-8 across all critical connector parameters. The substitute is an active production part with RoHS compliance certification.

Q: What is the significance of the RoHS compliance difference?

A: RoHS compliance restricts the use of lead and other hazardous substances in electronic components. The 3-644754-8 meets RoHS requirements, making it suitable for applications subject to RoHS regulations. The 644754-8, being RoHS non-compliant, may not be acceptable for new designs or applications in regulated markets.

Q: Are there any packaging differences between these parts?

A: The 644754-8 packaging specification is not provided in the available data. The 3-644754-8 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: What is the current availability status of these parts?

A: The 644754-8 has 979 pieces in stock but is classified as obsolete. The 3-644754-8 has 971 pieces in stock and is an active production component. For ongoing supply assurance, the 3-644754-8 is the recommended selection.

Q: Do both parts meet the same electrical specifications?

A: Yes. Both parts are rated for 600VAC operation, support operating temperatures from -55°C to 105°C, and carry UL94 V-0 material flammability certification. Electrical performance is equivalent across all specified parameters.