TE Connectivity AMP Connectors 644803-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644803-4 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 is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for new production and repair applications.

Substiute Parts

644803-4

TE Connectivity AMP ConnectorsIn Stock: 680644803-4 Datasheet

Current PartRFQ

2-644803-4

TE Connectivity AMP ConnectorsIn Stock: 32432-644803-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644803-4 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 4
• Contact Type: Male Pin
• Voltage Rating: 250VAC
• Operating Temperature Range: -55°C ~ 105°C

Mechanical Compatibility Parameters:

• Connector Type: Header
• Mounting Type: Through Hole, Right Angle
• Shrouding: Shrouded - 4 Wall
• Contact Length - Mating: 0.200" (5.08mm)
• Contact Length - Post: 0.130" (3.30mm)
• Insulation Height: 0.343" (8.71mm)
• Contact Shape: Square
• Insulation Material: Polyester
• Fastening Type: Friction Lock

Material & Certification Parameters:

• Material Flammability Rating: UL94 V-0
• Contact Material: Copper Alloy
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 2-644803-4 maintains full equivalence across all mechanical and electrical parameters. Differences in contact finish composition and product status do not affect functional interchangeability in the specified application.

Parameter Comparison

Engineering Selection Recommendations

The 2-644803-4 serves as the direct functional equivalent to the obsolete 644803-4. Both parts maintain identical mechanical and electrical specifications within the MTA-100 series, ensuring direct interchangeability in board-to-cable/wire connection applications.

Product Status Consideration: The 644803-4 is classified as obsolete, while the 2-644803-4 maintains active product status with significantly higher inventory availability (3155 pieces versus 643 pieces). Selection of the active substitute ensures long-term component availability and supply chain continuity.

Compliance Improvement: The substitute part 2-644803-4 achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. This compliance upgrade aligns with current regulatory requirements for electronic component procurement in regulated industries.

Contact Finish Specification: The main part specifies Tin-Lead contact finish, while the substitute employs Tin finish. Both finishes provide equivalent electrical conductivity and solderability characteristics for the specified 250VAC, general-purpose application. The Tin finish of the substitute part reflects modern manufacturing standards and environmental compliance initiatives.

Thermal and Electrical Performance: Both parts operate across the identical temperature range (-55°C ~ 105°C) and voltage rating (250VAC), with equivalent current-carrying capacity determined by wire gauge. No performance degradation occurs with substitution.

Frequently Asked Questions (FAQ)

Q: Can the 2-644803-4 directly replace the 644803-4 in existing designs?

A: Yes. The 2-644803-4 maintains full mechanical and electrical equivalence to the 644803-4 across all critical parameters including pitch, position count, mounting type, voltage rating, and operating temperature range. 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 finishes provide equivalent electrical conductivity and solderability for the specified application. The Tin finish of the substitute part reflects current manufacturing standards and eliminates lead content, aligning with environmental and regulatory compliance requirements.

Q: Why is the 644803-4 listed as obsolete?

A: The 644803-4 has been superseded by the 2-644803-4 within the TE Connectivity product portfolio. The substitute part offers improved compliance status (ROHS3 compliant) and maintains active production status with superior inventory availability.

Q: Are there packaging differences between the main part and substitute?

A: The main part 644803-4 packaging specification is not provided in the technical data. The substitute 2-644803-4 is supplied in bulk packaging. Confirm packaging requirements with your procurement specification before component selection.

Q: Does the RoHS compliance difference affect functional performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards rather than electrical or mechanical performance. Both parts deliver identical functional performance in the specified application. The improved ROHS3 compliance of the substitute part provides regulatory advantage for new designs and procurement initiatives.

Q: What is the current rating for these connectors?

A: Current rating varies by wire gauge. Consult the wire gauge specification for your application to determine the maximum current-carrying capacity. Both the main part and substitute support identical current ratings based on wire gauge.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 644803-4 and 2-644803-4 operate across the identical temperature range of -55°C to 105°C, ensuring equivalent thermal performance in all environmental conditions within this specification.