TE Connectivity AMP Connectors 644457-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644457-4 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features a 4-position configuration with 0.100" (2.54mm) pitch spacing, suitable for board-to-cable/wire connections in general-purpose applications. The part operates across a temperature range of -55°C to 105°C and carries a voltage rating of 250VAC.

The 644457-4 is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and maintenance requirements for systems utilizing this connector type.

Substiute Parts

644457-4

TE Connectivity AMP ConnectorsIn Stock: 1032644457-4 Datasheet

Current PartRFQ

3-644457-4

TE Connectivity AMP ConnectorsIn Stock: 35533-644457-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644457-4 is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (4)
• Pitch spacing (0.100" / 2.54mm)
• Mounting configuration (Through Hole, Right Angle)
• Contact dimensions (Mating length 0.260", Post length 0.110")
• Insulation height (0.100")

Electrical Compatibility:

• Operating temperature range (-55°C ~ 105°C)
• Voltage rating (250VAC)
• Termination method (Solder)

Material Specifications:

• Contact material (Copper Alloy)
• Insulation material (Thermoplastic)
• Flammability rating (UL94 V-0)

The substitute part 3-644457-4 maintains full equivalence across all mechanical and electrical parameters. Differences in contact finish composition (Tin-Lead versus Tin) and product status (Obsolete versus Active) do not affect functional interchangeability within the specified operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The 3-644457-4 serves as a direct functional substitute for the obsolete 644457-4. Both parts maintain identical mechanical and electrical specifications across all critical parameters including connector type, position count, pitch spacing, mounting configuration, contact dimensions, operating temperature range, and voltage rating.

Product Status Consideration: The 644457-4 is classified as obsolete, while the 3-644457-4 is active. Selection of the active substitute part ensures continued component availability for production, maintenance, and field replacement applications.

Compliance Status: The 3-644457-4 carries ROHS3 compliance certification, whereas the 644457-4 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 3-644457-4 provides enhanced compliance posture.

Contact Finish Specification: The primary difference between these parts is the contact finish composition. The 644457-4 features Tin-Lead plating, while the 3-644457-4 uses Tin plating. Both finishes provide equivalent electrical conductivity and corrosion resistance within the specified operating parameters. The Tin finish of the substitute part aligns with contemporary lead-free manufacturing standards.

Packaging: The 3-644457-4 is supplied in bulk packaging, compared to the main part's unspecified packaging. This difference does not affect functional interchangeability.

Frequently Asked Questions (FAQ)

Q: Can the 3-644457-4 be used as a direct replacement for the 644457-4 in existing designs?

A: Yes. The 3-644457-4 maintains full mechanical and electrical equivalence with the 644457-4 across all critical parameters including connector type, position count, pitch spacing, mounting configuration, contact dimensions, operating temperature range, and voltage rating. Direct substitution is supported without design modification.

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

A: Both Tin-Lead and Tin contact finishes provide equivalent electrical conductivity and corrosion resistance within the specified operating parameters of -55°C to 105°C and 250VAC. The Tin finish of the 3-644457-4 reflects contemporary lead-free manufacturing practices and supports RoHS3 compliance.

Q: Why is the 644457-4 listed as obsolete?

A: The 644457-4 is classified as obsolete by the manufacturer. The 3-644457-4 is the active equivalent part and is recommended for new designs and ongoing production requirements.

Q: Does the bulk packaging of the 3-644457-4 affect its compatibility?

A: No. Packaging format does not affect the functional or mechanical compatibility of the connector. Bulk packaging is a supply and logistics consideration only.

Q: Are there any temperature or voltage derating considerations when substituting the 3-644457-4?

A: No. Both parts operate identically across the specified temperature range of -55°C to 105°C and voltage rating of 250VAC. No derating or operational adjustments are required.

Q: What is the current rating for these connectors?

A: The current rating varies by wire gauge. Consult the wire gauge specifications and mating contact specifications for the specific application to determine the appropriate current capacity.

Q: Is the 3-644457-4 suitable for applications requiring RoHS compliance?

A: Yes. The 3-644457-4 carries ROHS3 compliance certification, making it suitable for applications subject to RoHS regulatory requirements.