TE Connectivity 643814-5 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643814-5 is a 5-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as obsolete product status.

Due to its obsolete classification, locating original inventory may present supply chain challenges. An active equivalent substitute is available that maintains identical electrical and mechanical specifications while offering improved compliance status and current manufacturing availability.

Substiute Parts

643814-5

TE Connectivity AMP ConnectorsIn Stock: 1157643814-5 Datasheet

Current PartRFQ

3-643814-5

TE Connectivity AMP ConnectorsIn Stock: 26243-643814-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 643814-5 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Rectangular Receptacle)
• Number of positions (5)
• Contact type (Female Socket)
• Pitch spacing (0.100" / 2.54mm)
• Cable termination method (IDC)
• Wire gauge compatibility (24 AWG)
• Wire type support (Discrete or Ribbon Cable)

Mechanical Compatibility Parameters:

• Mounting configuration (Free Hanging In-Line, Right Angle)
• Fastening mechanism (Locking Ramp)
• Closed-end housing design
• Series designation (MTA-100)

The substitute part 3-643814-5 maintains complete equivalence across all electrical and mechanical parameters. The primary distinction between the main part and its substitute relates to contact finish composition and product lifecycle status, not functional or dimensional characteristics.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Procurement:

The substitute part 3-643814-5 is the appropriate selection for new applications and ongoing procurement activities. This part maintains complete functional and dimensional equivalence to the 643814-5 while offering the following advantages:

• Active product status ensures continued manufacturing availability and supply chain reliability
• RoHS compliance status aligns with current regulatory requirements and industry standards
• Identical electrical and mechanical specifications guarantee direct interchangeability in existing circuit designs and mechanical assemblies

For Legacy System Maintenance:

The original 643814-5 remains functionally suitable for maintenance and repair of existing installations where the connector is already deployed. The obsolete status does not affect performance in established applications; however, procurement of replacement units may require extended lead times or inventory sourcing from secondary markets.

Contact Finish Consideration:

The transition from tin-lead to tin contact finish in the substitute part does not affect electrical performance or mechanical compatibility. Both finishes provide equivalent contact resistance and durability characteristics at the specified contact finish thickness of 80.0µin (2.03µm).

Frequently Asked Questions (FAQ)

Q: Can the 3-643814-5 substitute directly replace the 643814-5 in existing assemblies?

A: Yes. The 3-643814-5 maintains complete electrical and mechanical equivalence across all critical parameters including connector type, position count, pitch spacing, contact configuration, termination method, wire gauge compatibility, mounting type, and fastening mechanism. Direct substitution is supported without design modification.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: Both contact finishes are applied at identical thickness (80.0µin / 2.03µm) and provide equivalent electrical performance and durability. The change from tin-lead to tin reflects manufacturing process updates and regulatory compliance evolution, not functional degradation.

Q: Why is the 643814-5 classified as obsolete?

A: Obsolete classification indicates the part has been discontinued from active manufacturing. The 3-643814-5 represents the current active equivalent within the MTA-100 series product line.

Q: Are there any compatibility restrictions when using the 3-643814-5 as a substitute?

A: No compatibility restrictions exist. The substitute part is electrically and mechanically identical across all specified parameters. It accommodates the same wire gauges (24 AWG), termination methods (IDC), wire types (discrete or ribbon cable), and mounting configurations as the original part.

Q: What is the packaging difference between these parts?

A: The 643814-5 packaging specification is not defined in available documentation. The 3-643814-5 is supplied in bulk packaging. This distinction affects procurement and inventory management but does not influence electrical or mechanical performance.

Q: Does RoHS compliance status affect functional performance?

A: RoHS compliance status reflects material composition and regulatory adherence, not functional performance. Both parts operate identically within their specified electrical and mechanical parameters. RoHS compliance of the substitute part aligns with current environmental and regulatory standards applicable to electronic component procurement.

Q: Can these connectors be used with both discrete and ribbon cable?

A: Yes. Both the 643814-5 and 3-643814-5 support IDC termination with discrete or ribbon cable at 24 AWG wire gauge. The connector design accommodates both cable configurations without modification.