TE Connectivity 643815-7 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643815-7 is a 7-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, a closed-end design, and free-hanging or right-angle mounting configuration with locking ramp fastening. The part is currently active in production with 726 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector specification. Alternatives may be required due to RoHS compliance requirements, packaging preferences, or inventory availability while preserving functional compatibility in the application circuit.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Number of Positions	7
Pitch	0.100" (2.54mm)
Number of Rows	1
Contact Type	Female Socket
Cable Termination Method	IDC
Wire Gauge	26 AWG
Wire Type	Discrete or Ribbon Cable
Mounting Type	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp
Contact Finish Thickness	80.0µin (2.03µm)
Features	Closed End
Color	Blue
Series	MTA-100
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 643815-7 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

Connector type (Receptacle)
Number of positions (7)
Contact type (Female Socket)
Pitch (0.100" / 2.54mm)
Number of rows (1)
Wire gauge (26 AWG)
Contact finish thickness (80.0µin / 2.03µm)

Mechanical Compatibility Parameters:

Cable termination method (IDC)
Wire type (Discrete or Ribbon Cable)
Mounting type (Free Hanging / Right Angle)
Fastening type (Locking Ramp)
Features (Closed End)
Color (Blue)
Series (MTA-100)

Environmental Parameters:

Moisture Sensitivity Level (1 / Unlimited)

The substitute part 3-643815-7 maintains all electrical and mechanical parameters identical to the main part. The primary difference is the contact finish specification (Tin versus Tin-Lead) and RoHS compliance status, which does not affect connector interchangeability in applications where either finish is acceptable.

Parameter Comparison

Parameter	643815-7	3-643815-7
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Receptacle	Receptacle
Number of Positions	7	7
Contact Type	Female Socket	Female Socket
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp	Locking Ramp
Cable Termination	IDC	IDC
Wire Type	Discrete or Ribbon Cable	Discrete or Ribbon Cable
Wire Gauge	26 AWG	26 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Blue	Blue
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Standard	Bulk
Inventory	726 Pcs	806 Pcs

Engineering Selection Recommendations

643815-7 Selection Criteria: The 643815-7 is appropriate for applications where tin-lead contact finish is specified or where RoHS non-compliance is acceptable. This part maintains active production status and has established supply availability.

3-643815-7 Selection Criteria: The 3-643815-7 is the preferred alternative for new designs and applications requiring ROHS3 compliance. This part is functionally equivalent with identical electrical and mechanical specifications. The tin contact finish meets modern environmental and regulatory standards while maintaining the same contact finish thickness and performance characteristics. Bulk packaging is available for high-volume applications.

Compliance Consideration: Applications subject to RoHS3 regulations should specify the 3-643815-7 variant. Both parts are manufactured by TE Connectivity and maintain identical connector geometry, termination method, and electrical performance within the MTA-100 series specification.

Frequently Asked Questions (FAQ)

Q: Are the 643815-7 and 3-643815-7 mechanically interchangeable?

A: Yes. Both connectors maintain identical pitch (0.100"), position count (7), mounting configuration (free-hanging/right-angle), and fastening mechanism (locking ramp). They are mechanically interchangeable in all applications.

Q: What is the functional difference between tin-lead and tin contact finishes?

A: Both finishes provide equivalent electrical conductivity and contact resistance at the specified 80.0µin (2.03µm) thickness. The primary difference is regulatory compliance: tin-lead is RoHS non-compliant, while tin meets ROHS3 standards. Contact performance in the application circuit is functionally equivalent.

Q: Can I substitute 3-643815-7 for 643815-7 in existing designs?

A: Yes, provided the application does not explicitly require tin-lead contact finish. The 3-643815-7 is electrically and mechanically equivalent and is recommended for new designs due to ROHS3 compliance.

Q: Does packaging type affect connector performance?

A: No. The difference between standard and bulk packaging does not affect electrical or mechanical performance. Packaging selection is based on inventory management and order quantity requirements.

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

A: Yes. Both the 643815-7 and 3-643815-7 are designed for IDC termination with 26 AWG discrete or ribbon cable. The closed-end design and locking ramp fastening are identical across both variants.

Q: What is the moisture sensitivity level for these connectors?

A: Both connectors have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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