TE Connectivity 643815-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643815-8 is an 8-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 811 pieces in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across connector specifications. Alternative part numbers may be required due to packaging format changes, inventory availability, or compliance requirement updates while preserving functional compatibility in the application circuit.

Substiute Parts

643815-8

TE Connectivity AMP ConnectorsIn Stock: 836643815-8 Datasheet

Current PartRFQ

3-643815-8

TE Connectivity AMP ConnectorsIn Stock: 1099913-643815-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between 643815-8 and 3-643815-8 is valid based on the following matching parameters:

Electrical Compatibility Parameters:

• Connector type: Receptacle
• Contact type: Female socket
• Number of positions: 8
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Cable termination: IDC
• Wire gauge: 26 AWG
• Contact finish thickness: 80.0µin (2.03µm)

Mechanical Compatibility Parameters:

• Mounting type: Free hanging (in-line), right angle
• Fastening type: Locking ramp
• Features: Closed end
• Color: Blue
• Series: MTA-100

Variance in Contact Finish: The primary difference between these parts is the contact finish specification. The main part 643815-8 specifies tin-lead finish, while the substitute part 3-643815-8 specifies tin finish. Both finishes maintain the same thickness specification of 80.0µin (2.03µm), ensuring equivalent electrical performance and contact resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

643815-8 Selection Criteria: The 643815-8 is appropriate for applications where tin-lead contact finish is specified or required by design documentation. This part carries an active product status and maintains full compatibility with MTA-100 series mating connectors and IDC termination tooling. The part is available with 811 units in current inventory.

3-643815-8 Selection Criteria: The 3-643815-8 substitute part is appropriate for applications where ROHS3 compliance is mandated or preferred. This part maintains identical electrical and mechanical specifications while offering enhanced regulatory compliance status. The substitute part is available with significantly higher inventory levels at 109,928 units. Both parts are active products from TE Connectivity AMP Connectors.

Compliance Considerations: The primary distinction between these parts relates to RoHS compliance status. The 643815-8 carries "Not applicable" RoHS status, while 3-643815-8 is ROHS3 compliant. Applications subject to RoHS3 regulatory requirements should specify 3-643815-8. Applications without RoHS compliance mandates may use either part based on design specifications and inventory availability.

Frequently Asked Questions (FAQ)

Q: Are 643815-8 and 3-643815-8 mechanically interchangeable?

A: Yes. Both parts share identical mechanical specifications including connector type, number of positions, pitch, mounting configuration, and fastening method. Physical dimensions and mounting interfaces are equivalent.

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

A: The contact finish material differs between the two parts. The 643815-8 uses tin-lead finish, while 3-643815-8 uses tin finish. Both finishes maintain the same thickness specification of 80.0µin (2.03µm), ensuring equivalent electrical contact resistance and performance characteristics.

Q: Can I use 3-643815-8 as a direct replacement for 643815-8 in existing designs?

A: Yes, 3-643815-8 is a direct functional substitute for 643815-8. All electrical and mechanical parameters are equivalent. The primary consideration is RoHS compliance status; 3-643815-8 is ROHS3 compliant while 643815-8 is not applicable for RoHS.

Q: What does "Closed End" feature mean for these connectors?

A: The closed-end feature indicates that the connector housing includes a protective end cap or closure, preventing accidental contact with internal terminals and providing strain relief for the cable assembly.

Q: Are these connectors suitable for both discrete and ribbon cable applications?

A: Yes. Both 643815-8 and 3-643815-8 support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method at 26 AWG wire gauge.

Q: What is the pitch specification and why is it important?

A: The pitch is 0.100" (2.54mm), representing the center-to-center distance between adjacent contact positions. This specification ensures compatibility with MTA-100 series mating plugs and standard IDC termination tooling.

Q: What packaging formats are available for these parts?

A: The 643815-8 is available in standard packaging format. The 3-643815-8 substitute is available in bulk packaging, which may affect ordering quantities and handling procedures.

Q: Are there any moisture sensitivity concerns with these connectors?

A: Both parts carry Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life without moisture control requirements. Standard storage conditions are suitable for these components.