TE Connectivity 643818-5 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643818-5 is a 5-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 20 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design with polarizing key, and free-hanging in-line mounting configuration. The part is currently active in production with 751 pieces in stock inventory.

Identification of equivalent and substitute parts is necessary to address supply chain requirements, inventory optimization, and component availability across manufacturing cycles. Substitute parts maintain identical electrical and mechanical specifications while offering alternative packaging, compliance certifications, or contact finish compositions.

Substiute Parts

643818-5

TE Connectivity AMP ConnectorsIn Stock: 807643818-5 Datasheet

Current PartRFQ

3-643818-5

TE Connectivity AMP ConnectorsIn Stock: 16643-643818-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between TE Connectivity 643818-5 and equivalent parts is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Receptacle)
• Number of positions (5)
• Contact type (Female Socket)
• Pitch specification (0.156" / 3.96mm)
• Wire gauge rating (20 AWG)
• Cable termination method (IDC)

Mechanical Compatibility Parameters:

• Number of rows (1)
• Mounting type (Free Hanging In-Line)
• Fastening type (Locking Ramp)
• Features (Closed End, Polarizing Key)
• Contact finish thickness (80.0µin / 2.03µm)
• Color (Yellow)
• Series designation (MTA-156)

Environmental Parameters:

• Moisture Sensitivity Level (1 - Unlimited)

Substitute part 3-643818-5 maintains complete equivalence across all electrical and mechanical parameters. The primary distinction is the contact finish composition (tin versus tin-lead) and RoHS compliance status, which do not affect functional interchangeability in applications where the contact finish material is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The TE Connectivity 3-643818-5 serves as a direct functional equivalent to the 643818-5 across all electrical and mechanical specifications. Selection between these parts should be based on the following factors:

RoHS Compliance Requirements: The 643818-5 is RoHS non-compliant, while the 3-643818-5 is ROHS3 compliant. Applications subject to RoHS directives or customer specifications requiring RoHS compliance must utilize the 3-643818-5 substitute.

Contact Finish Material Specification: The 643818-5 features a tin-lead contact finish, while the 3-643818-5 features a tin contact finish. Both maintain identical contact finish thickness (80.0µin / 2.03µm). Selection depends on application requirements regarding lead content and material composition specifications.

Inventory and Availability: The 3-643818-5 maintains higher inventory availability (1645 pieces) compared to the 643818-5 (751 pieces), supporting supply chain continuity and lead time optimization.

Packaging Consideration: The 3-643818-5 is supplied in bulk packaging, while the 643818-5 packaging specification is not defined. Packaging selection should align with manufacturing process requirements and component handling procedures.

Both parts maintain active product status and are suitable for new design implementations and production applications.

Frequently Asked Questions (FAQ)

Q: Are the 643818-5 and 3-643818-5 electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including 5-position configuration, 0.156" pitch, 20 AWG wire gauge rating, IDC termination method, and female socket contact type. Electrical performance and signal integrity are equivalent.

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

A: The contact finish material composition differs between the two parts. The 643818-5 uses tin-lead, while the 3-643818-5 uses tin. Both finishes maintain the same thickness (80.0µin / 2.03µm). Selection depends on application material specifications and regulatory requirements regarding lead content.

Q: Which part should be selected for RoHS-compliant applications?

A: The 3-643818-5 is ROHS3 compliant and must be selected for applications subject to RoHS directives or customer specifications requiring RoHS compliance. The 643818-5 is RoHS non-compliant.

Q: Are the mechanical dimensions and mounting configurations identical?

A: Yes. Both connectors share identical mechanical specifications including 1-row configuration, free-hanging in-line mounting, locking ramp fastening, closed-end design with polarizing key, and yellow color. Physical installation and PCB layout compatibility are equivalent.

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

A: Yes. Both the 643818-5 and 3-643818-5 support IDC termination with discrete or ribbon cable at 20 AWG wire gauge.

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

A: Both connectors have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited moisture sensitivity with no special storage or handling requirements.

Q: Is packaging a consideration for substitution?

A: Yes. The 3-643818-5 is supplied in bulk packaging, while the 643818-5 packaging is not specified. Manufacturing processes requiring specific packaging formats should account for this distinction during component procurement.

Q: Are both parts currently in production?

A: Yes. Both the 643818-5 and 3-643818-5 maintain active product status with current inventory availability.