TE Connectivity 1-643818-0 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-643818-0 is a 10-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 1081 pieces in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector specification. Identifying alternative part numbers is necessary for supply chain flexibility, inventory optimization, and compliance with evolving regulatory requirements such as RoHS standards.

Substiute Parts

1-643818-0

TE Connectivity AMP ConnectorsIn Stock: 11591-643818-0 Datasheet

Current PartRFQ

4-643818-0

TE Connectivity AMP ConnectorsIn Stock: 12914-643818-0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1-643818-0 are identified based on strict equivalence across the following critical parameters:

• Connector Type & Position Count: Receptacle configuration with 10 positions
• Pitch & Row Configuration: 0.156" (3.96mm) pitch, single-row layout
• Contact Geometry: Female socket contacts
• Termination Method: IDC cable termination
• Wire Gauge Compatibility: 20 AWG wire specification
• Mounting & Fastening: Free-hanging in-line mounting with locking ramp fastening
• Mechanical Features: Closed-end housing with polarizing key

The substitute part 4-643818-0 maintains identical electrical and mechanical specifications while differing in contact finish composition and RoHS compliance status. Both parts share the same base product number (643818) and series designation (MTA-156), confirming functional interchangeability within the MTA-156 connector family.

Parameter Comparison

Engineering Selection Recommendations

1-643818-0 (Tin-Lead Contact Finish)

Select this part number for applications where tin-lead contact finish is explicitly required by design specification or legacy system compatibility. This part is RoHS non-compliant and suitable for non-regulated markets or applications with specific tin-lead material requirements. Current inventory: 1081 pieces.

4-643818-0 (Tin Contact Finish)

Select this part number for applications requiring RoHS compliance or for new designs targeting regulated markets and environmental standards. The tin contact finish maintains the same contact finish thickness (80.0µin / 2.03µm) and electrical performance as the tin-lead variant. This part is RoHS compliant and represents the preferred choice for modern applications. Current inventory: 1273 pieces.

Both parts maintain identical mechanical interfaces, electrical characteristics, and functional performance within the MTA-156 series. Selection between these substitutes is determined by regulatory compliance requirements and material finish specifications rather than electrical or mechanical differences.

Frequently Asked Questions (FAQ)

Q: Are 1-643818-0 and 4-643818-0 mechanically interchangeable?

A: Yes. Both parts share identical connector geometry, pitch (0.156"), position count (10), mounting type (free-hanging in-line), and fastening mechanism (locking ramp). They are direct mechanical substitutes within the MTA-156 series.

Q: What is the primary difference between these two part numbers?

A: The primary difference is the contact finish material. The 1-643818-0 features tin-lead contact finish and is RoHS non-compliant. The 4-643818-0 features tin contact finish and is RoHS compliant. Both maintain identical contact finish thickness (80.0µin / 2.03µm).

Q: Can I use 4-643818-0 as a direct replacement for 1-643818-0 in existing designs?

A: Yes, provided your application does not have explicit design requirements for tin-lead contact finish. The 4-643818-0 is electrically and mechanically equivalent and offers the additional benefit of RoHS compliance.

Q: Are there any performance differences between tin-lead and tin contact finishes in this connector?

A: Both contact finishes are applied at the same thickness (80.0µin / 2.03µm) and provide equivalent electrical performance for IDC termination with 20 AWG wire. Selection is based on regulatory compliance and material specifications rather than performance differences.

Q: What is the IDC termination method used in these connectors?

A: IDC (Insulation Displacement Contact) termination allows direct connection of discrete or ribbon cable without stripping insulation. The connector pierces the cable insulation to establish electrical contact.

Q: Are these connectors suitable for ribbon cable applications?

A: Yes. Both connectors support discrete or ribbon cable termination at 20 AWG wire gauge using the IDC method.

Q: What does the polarizing key feature provide?

A: The polarizing key is a mechanical feature that ensures correct orientation during mating, preventing reversed connections and protecting against incorrect assembly.

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

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.