TE Connectivity 640443-9 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640443-9 is a 9-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and free-hanging or right-angle mounting configuration with locking ramp fastening. The part is currently active in production with 854 units in stock. Substitute parts are identified to address specific compliance requirements, packaging preferences, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

640443-9

TE Connectivity AMP ConnectorsIn Stock: 916640443-9 Datasheet

Current PartRFQ

3-640443-9

TE Connectivity AMP ConnectorsIn Stock: 10253-640443-9 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 640443-9 and the equivalent part 3-640443-9 is based on strict electrical and mechanical compatibility. Both parts share identical specifications across all critical parameters that determine connector interchangeability:

Key Parameters for Substitution Compatibility:

• 9-position rectangular receptacle configuration
• 0.100" (2.54mm) pitch spacing
• Single-row layout
• Female socket contact type
• IDC cable termination method
• 28 AWG wire gauge support
• Free-hanging and right-angle mounting options
• Locking ramp fastening mechanism
• Closed-end design
• 80.0µin (2.03µm) contact finish thickness
• MSL 1 rating

The primary distinction between these parts is the contact finish specification (tin-lead versus tin) and RoHS compliance status. Both parts maintain identical mechanical form factor and electrical performance characteristics, enabling direct substitution in applications where the specific contact finish material and regulatory compliance requirements are compatible with system specifications.

Parameter Comparison

Engineering Selection Recommendations

640443-9 (Tin-Lead Contact Finish): Select this part for applications where tin-lead contact finish is explicitly required by system specifications or where RoHS non-compliance is acceptable. This part is suitable for legacy systems, military applications, or designs where lead-based finishes provide specific performance characteristics.

3-640443-9 (Tin Contact Finish, ROHS3 Compliant): Select this part for applications requiring RoHS3 compliance or where lead-free contact finish is mandated by regulatory requirements or customer specifications. This part is suitable for commercial, industrial, and consumer applications subject to environmental and safety regulations. The tin contact finish with identical thickness specification (80.0µin) maintains electrical performance parity with the main part.

Both parts are active products with adequate inventory availability. Selection between these parts is determined by compliance requirements and contact finish material specifications rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Can 3-640443-9 be used as a direct replacement for 640443-9?

A: Yes, 3-640443-9 is a direct mechanical and electrical substitute for 640443-9. Both parts share identical connector configuration, pitch, position count, mounting type, and cable termination method. The primary difference is the contact finish material (tin versus tin-lead) and RoHS compliance status. Substitution is valid when the application specifications permit tin contact finish and RoHS3 compliance.

Q: What is the difference between tin-lead and tin contact finishes in these connectors?

A: The contact finish material affects corrosion resistance and solderability characteristics. Both finishes are applied to the same 80.0µin (2.03µm) thickness specification. Selection depends on application requirements, regulatory compliance mandates, and system design specifications.

Q: Are these connectors compatible with both discrete and ribbon cable?

A: Yes, both 640443-9 and 3-640443-9 support IDC termination for discrete or ribbon cable at 28 AWG wire gauge. The IDC termination method accommodates both cable types without modification.

Q: What does the closed-end feature mean?

A: The closed-end design indicates that the connector housing includes end caps or barriers that prevent accidental contact with internal terminals. This feature provides mechanical protection and improves safety during handling and installation.

Q: Can these connectors be mounted in both in-line and right-angle orientations?

A: Yes, both parts support free-hanging mounting in in-line and right-angle configurations. The specific mounting orientation is determined during assembly and does not affect electrical performance.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning these connectors do not require special moisture control during storage, handling, or assembly. No baking or desiccant storage is required.

Q: Is there an inventory difference between these parts?

A: Yes, 640443-9 has 854 units in stock while 3-640443-9 has 975 units in stock. Both parts are available in adequate quantities for production use.

Q: What does the locking ramp fastening type provide?

A: The locking ramp fastening mechanism provides secure mating between the receptacle and plug connectors. The ramp design ensures positive engagement and prevents accidental disconnection during operation.