TE Connectivity 643817-5 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643817-5 is a 5-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 18 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design, and polarizing key for secure mating.

The 643817-5 is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing system maintenance, repair, and new production builds. Direct substitutes within the MTA-156 series provide functional equivalence while addressing product availability and compliance requirements.

Substiute Parts

643817-5

TE Connectivity AMP ConnectorsIn Stock: 732643817-5 Datasheet

Current PartRFQ

3-643817-5

TE Connectivity AMP ConnectorsIn Stock: 26083-643817-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 643817-5 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Connector type (Receptacle)
• Number of positions (5)
• Contact type (Female Socket)
• Pitch (0.156" / 3.96mm)
• Wire gauge (18 AWG)
• Cable termination method (IDC)

Mechanical 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 (Orange)

Series Compatibility:

• MTA-156 series designation

The substitute part 3-643817-5 maintains identical electrical and mechanical specifications while differing in contact finish material (Tin versus Tin-Lead) and product status (Active versus Discontinued). Both parts share the same base product number (643817) and are directly interchangeable within the MTA-156 series.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 3-643817-5

The 3-643817-5 is the direct functional equivalent of the 643817-5 and serves as the primary substitute for all applications requiring a 5-position MTA-156 rectangular receptacle connector with IDC termination for 18 AWG cable.

Product Status Consideration: The 643817-5 is discontinued at DiGi Electronics, while the 3-643817-5 maintains active product status with significantly higher inventory availability (2525 units versus 708 units). For new designs and ongoing production, the 3-643817-5 is the recommended selection.

Compliance Consideration: The 3-643817-5 is ROHS3 compliant, whereas the 643817-5 is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the 3-643817-5 is the required selection.

Contact Finish Consideration: The primary difference between the two parts is the contact finish material. The 643817-5 features tin-lead plating, while the 3-643817-5 features tin plating. Both maintain identical contact finish thickness (80.0µin / 2.03µm). The tin finish of the 3-643817-5 aligns with modern manufacturing standards and RoHS compliance requirements.

Electrical and Mechanical Equivalence: All electrical parameters (connector type, position count, pitch, contact type, wire gauge, termination method) and mechanical parameters (mounting type, fastening type, features, color) are identical between the two parts. Direct substitution is supported without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 3-643817-5 be used as a direct replacement for the 643817-5 in existing assemblies?

A: Yes. The 3-643817-5 is electrically and mechanically equivalent to the 643817-5. Both connectors are 5-position MTA-156 receptacles with identical pitch (0.156"), contact type (female socket), wire gauge (18 AWG), mounting configuration (free hanging in-line), and fastening method (locking ramp). Direct substitution is supported without modification to mating connectors, cable assemblies, or PCB layouts.

Q: What is the primary difference between the 643817-5 and 3-643817-5?

A: The primary difference is the contact finish material. The 643817-5 uses tin-lead plating, while the 3-643817-5 uses tin plating. Both maintain the same contact finish thickness (80.0µin / 2.03µm). Additionally, the 3-643817-5 is ROHS3 compliant and maintains active product status, whereas the 643817-5 is RoHS non-compliant and discontinued.

Q: Are there packaging differences between these two parts?

A: The 643817-5 packaging information is not specified in the available data. The 3-643817-5 is supplied in bulk packaging. For applications requiring specific packaging configurations, contact the manufacturer directly.

Q: Which part should be selected for new designs?

A: The 3-643817-5 is the recommended selection for new designs. It maintains active product status, offers superior inventory availability, and meets ROHS3 compliance requirements. The 643817-5 is discontinued and should not be specified for new production.

Q: Is the tin finish of the 3-643817-5 suitable for all applications previously using the tin-lead 643817-5?

A: The tin finish of the 3-643817-5 is suitable for all standard IDC connector applications. Both finishes provide equivalent contact finish thickness and electrical performance. The tin finish aligns with current manufacturing standards and regulatory requirements.

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

A: Yes. Both the 643817-5 and 3-643817-5 support IDC termination with discrete or ribbon cable at 18 AWG wire gauge. The locking ramp fastening type accommodates both cable configurations.

Q: What is the pitch specification for these connectors?

A: Both connectors feature a pitch of 0.156" (3.96mm), which is the standard spacing for the MTA-156 series. This pitch is maintained across all mating connector positions and is critical for proper alignment and contact engagement.