TE Connectivity 641438-2 Rectangular Connector: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 641438-2 is a 2-position rectangular plug connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as a free-hanging, in-line or right-angle mounted component with closed-end design. The part is currently active in production status with 631 pieces available in new original inventory.

Substitute parts are identified to address specific application requirements including RoHS compliance status, packaging preferences, and contact finish specifications while maintaining electrical and mechanical compatibility.

Substiute Parts

641438-2

TE Connectivity AMP ConnectorsIn Stock: 679641438-2 Datasheet

Current PartRFQ

3-641438-2

TE Connectivity AMP ConnectorsIn Stock: 34793-641438-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 641438-2 and the identified equivalent 3-641438-2 is based on strict equivalence of the following critical parameters:

Electrical and Mechanical Equivalence:

• Connector type (Plug)
• Number of positions (2)
• Pitch specification (0.156" / 3.96mm)
• Cable termination method (IDC)
• Wire gauge compatibility (24 AWG)
• Number of rows (1)
• Mounting configuration (Free Hanging In-Line, Right Angle)
• Contact type (Male Pin)
• Series designation (MTA-156)
• Contact finish thickness (80.0µin / 2.03µm)
• Color (White)
• Moisture sensitivity level (MSL 1 - Unlimited)

Allowable Variations:

• Contact finish material: Tin-Lead (641438-2) versus Tin (3-641438-2)
• Packaging format: Standard versus Bulk
• RoHS compliance status: Non-compliant versus Compliant
• REACH status: Affected versus Vendor Undefined
• HTSUS classification: Different codes reflecting finish variation

These variations do not affect functional compatibility in applications where the specified parameters are met.

Parameter Comparison

Engineering Selection Recommendations

Selection Criteria Based on Regulatory and Compliance Requirements:

Choose 641438-2 (Tin-Lead Contact Finish) when:

• Applications do not require RoHS compliance
• Legacy system compatibility is required
• Existing designs specify tin-lead contact finish
• REACH-affected material sourcing is acceptable

Choose 3-641438-2 (Tin Contact Finish) when:

• RoHS compliance is mandated by design specification or regulatory requirement
• New product designs require compliant component sourcing
• Bulk packaging format aligns with procurement and inventory management practices
• Applications operate within the specified MSL 1 moisture sensitivity environment

Both parts maintain identical electrical and mechanical performance within the MTA-156 series specification. The contact finish variation (tin-lead versus tin) and RoHS compliance status represent the primary differentiators. Selection between these equivalents is determined by regulatory compliance obligations and application requirements rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Are 641438-2 and 3-641438-2 electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including contact type, pitch, number of positions, and wire gauge compatibility. The contact finish variation does not affect electrical performance within the specified operating parameters.

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

A: The 641438-2 features tin-lead contact finish (80.0µin thickness), while the 3-641438-2 features tin contact finish (80.0µin thickness). Both finishes provide equivalent contact thickness and conductivity. The primary distinction is RoHS compliance status: tin-lead is non-compliant, while tin is compliant with RoHS regulations.

Q: Can I use the 3-641438-2 as a direct replacement for 641438-2 in existing designs?

A: Direct replacement is possible from a mechanical and electrical standpoint. However, design documentation and regulatory compliance requirements must be reviewed. If the original design specifies tin-lead finish or non-compliant status, substitution to tin finish requires design change documentation and validation.

Q: What does IDC termination mean for these connectors?

A: IDC (Insulation Displacement Contact) termination allows direct connection of 24 AWG discrete or ribbon cable without stripping insulation. The connector contacts pierce the cable insulation and establish electrical connection simultaneously.

Q: Are both parts suitable for ribbon cable applications?

A: Yes. Both 641438-2 and 3-641438-2 support discrete or ribbon cable termination via IDC method at 24 AWG specification.

Q: What is the significance of the MTA-156 series designation?

A: MTA-156 is the TE Connectivity series designation indicating 0.156" (3.96mm) pitch rectangular connectors. This series specification ensures mechanical and electrical compatibility between components within the same series.

Q: Does packaging format affect connector performance?

A: No. The packaging difference (standard versus bulk) reflects procurement and inventory management practices only. Connector performance, specifications, and reliability are identical regardless of packaging format.

Q: What is MSL 1 rating and why is it relevant?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited moisture sensitivity—the component requires no special moisture control during storage, handling, or assembly. Both parts carry MSL 1 rating, eliminating moisture management as a selection criterion.

Q: Can these connectors be used in right-angle or in-line mounting configurations?

A: Yes. Both parts support free-hanging mounting in either right-angle or in-line orientation, providing design flexibility for PCB layout and cable routing requirements.