TE Connectivity 643815-9 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643815-9 is a 9-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG discrete or ribbon cable. This connector features tin-lead contact finish, closed-end design, and free-hanging or right-angle mounting configuration with locking ramp fastening. The part is currently active in production with 1055 units in stock. Substitute parts are identified to address specific compliance requirements, packaging preferences, or inventory availability while maintaining functional equivalence within the MTA-100 connector family.

Substiute Parts

643815-9

TE Connectivity AMP ConnectorsIn Stock: 1134643815-9 Datasheet

Current PartRFQ

3-643815-9

TE Connectivity AMP ConnectorsIn Stock: 16003-643815-9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 643815-9 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Series: MTA-100
• Connector Type: Receptacle
• Number of Positions: 9
• Pitch: 0.100" (2.54mm)
• Contact Type: Female Socket
• Cable Termination: IDC
• Wire Gauge: 26 AWG
• Mounting Type: Free Hanging (In-Line), Right Angle
• Fastening Type: Locking Ramp
• Features: Closed End
• Color: Blue
• MSL Rating: 1 (Unlimited)

Allowable Variation Parameters:

• Contact Finish: Tin-Lead or Tin (both acceptable for IDC receptacle applications within MTA-100 series)
• Contact Finish Thickness: 80.0µin (2.03µm) maintained across all variants
• RoHS Status: May differ based on application requirements
• Packaging: May vary (standard or bulk)

The substitute part 3-643815-9 maintains full functional and mechanical compatibility with the main part while offering an alternative contact finish specification and improved RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Selection Criteria Based on Compliance and Certification:

The 643815-9 and 3-643815-9 are functionally equivalent within the MTA-100 series. Selection between these parts is determined by regulatory and compliance requirements:

Choose 643815-9 when:

• RoHS non-compliance is acceptable for the application
• Tin-lead contact finish is specified in design documentation
• Standard packaging meets procurement requirements
• Legacy system compatibility requires the original specification

Choose 3-643815-9 when:

• ROHS3 compliance is mandated by design standards or customer requirements
• Tin contact finish meets application electrical requirements
• Bulk packaging aligns with manufacturing or inventory management practices
• Higher stock availability (1509 units) supports production schedules

Both parts maintain identical mechanical dimensions, electrical performance characteristics, and IDC termination compatibility. The contact finish difference (tin-lead versus tin) does not affect functional performance within the MTA-100 connector family specifications. The primary distinction is regulatory compliance status and packaging configuration.

Frequently Asked Questions (FAQ)

Q: Are the 643815-9 and 3-643815-9 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including 9-position configuration, 0.100" pitch, closed-end design, locking ramp fastening, and free-hanging or right-angle mounting options. They are fully interchangeable in mechanical assembly.

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

A: Both contact finishes are specified at 80.0µin (2.03µm) thickness and provide equivalent electrical performance for IDC termination applications. The tin-lead finish (643815-9) is the original specification, while the tin finish (3-643815-9) represents a RoHS3-compliant alternative. Selection depends on regulatory requirements rather than electrical performance.

Q: Does RoHS compliance affect the connector's electrical or mechanical performance?

A: No. RoHS compliance status reflects material composition and manufacturing process compliance with environmental regulations. It does not alter the electrical characteristics, contact resistance, or mechanical durability of the connector. Both parts perform identically in circuit applications.

Q: Can I use the 3-643815-9 as a direct replacement for the 643815-9 in existing designs?

A: Yes, provided that RoHS3 compliance does not conflict with existing design specifications or customer requirements. The 3-643815-9 is a direct functional substitute with identical electrical and mechanical properties. Verify that design documentation does not explicitly require the tin-lead finish specification.

Q: What is the significance of the packaging difference between these parts?

A: The 643815-9 is supplied in standard packaging, while the 3-643815-9 is supplied in bulk packaging. This difference affects handling, storage, and inventory management but does not impact connector performance or compatibility. Select based on manufacturing process requirements and inventory management practices.

Q: Are both parts suitable for IDC termination with 26 AWG ribbon cable?

A: Yes. Both the 643815-9 and 3-643815-9 are designed for IDC termination with 26 AWG discrete or ribbon cable. The IDC contact design and wire gauge specifications are identical across both parts.

Q: What is the MSL rating, and does it differ between these connectors?

A: Both connectors carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity limitations. Storage and handling conditions are not restricted, and both parts can be used in any environmental application without moisture-related concerns.