TE Connectivity 644382-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644382-2 is a 2-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, and polarizing key for secure mating.

The 644382-2 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this connector type is specified or functionally required.

Substiute Parts

644382-2

TE Connectivity AMP ConnectorsIn Stock: 886644382-2 Datasheet

Current PartRFQ

3-644382-2

TE Connectivity AMP ConnectorsIn Stock: 10383-644382-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 644382-2 are identified based on strict electrical and mechanical parameter matching within the MTA-156 rectangular connector series. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Connector type (Receptacle)
• Number of positions (2)
• Pitch specification (0.156" / 3.96mm)
• Number of rows (1)
• Mounting type (Free Hanging In-Line)
• Cable termination method (IDC)
• Wire gauge compatibility (20 AWG)
• Contact type (Female Socket)
• Fastening type (Locking Ramp)
• Physical features (Closed End, Polarizing Key)

The substitute part 3-644382-2 matches all critical electrical and mechanical parameters. The primary difference is the contact finish material: the substitute uses tin finish instead of tin-lead finish. Both finishes meet the same contact finish thickness specification of 80.0µin (2.03µm), ensuring equivalent electrical performance and mating characteristics.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 3-644382-2 is the direct equivalent for the obsolete 644382-2. Selection between these parts is determined by regulatory and compliance requirements:

For RoHS-compliant applications: The 3-644382-2 is the appropriate selection. This part carries active product status and meets RoHS compliance requirements, making it suitable for new designs and applications subject to RoHS directives.

For legacy or non-RoHS-regulated applications: The 644382-2 remains functionally equivalent where RoHS compliance is not mandated. However, the obsolete status of this part limits long-term availability.

Both parts maintain identical electrical and mechanical specifications, including connector geometry, contact configuration, termination method, and wire gauge compatibility. The contact finish difference (tin versus tin-lead) does not affect functional performance, as both finishes meet the same thickness specification and provide equivalent electrical conductivity and mating characteristics.

The 3-644382-2 offers superior supply chain continuity due to its active product status and higher current inventory levels (1018 pieces versus 833 pieces for the main part).

Frequently Asked Questions (FAQ)

Q: Can the 3-644382-2 directly replace the 644382-2 in existing applications?

A: Yes. The 3-644382-2 is a direct functional equivalent. All electrical and mechanical parameters match, including connector type, position count, pitch, mounting configuration, termination method, and wire gauge. The connector will mate identically and perform the same function.

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

A: Both finishes provide equivalent electrical performance and contact reliability. The tin-lead finish in the 644382-2 is non-compliant with RoHS regulations. The tin finish in the 3-644382-2 meets RoHS requirements. Both finishes are applied to the same thickness specification (80.0µin / 2.03µm), ensuring consistent contact resistance and durability.

Q: Why is the 644382-2 listed as obsolete?

A: The 644382-2 carries an obsolete product status, indicating it is no longer in active production. The 3-644382-2 represents the current production equivalent within the MTA-156 series.

Q: Are there any compatibility issues when substituting the 3-644382-2 for the 644382-2?

A: No compatibility issues exist. Both connectors are from the same MTA-156 series, share identical mechanical dimensions, and use the same IDC termination method. Mating connectors, cable assemblies, and PCB layouts designed for the 644382-2 will function without modification when using the 3-644382-2.

Q: What is the MSL rating, and does it differ between these parts?

A: Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are identical for both parts.

Q: Which part should be selected for new designs?

A: The 3-644382-2 is the recommended selection for new designs. It maintains active product status, ensures long-term supply availability, and meets RoHS compliance requirements applicable to most modern applications.

Q: Are the pitch and position specifications identical?

A: Yes. Both parts feature 2 positions with a 0.156" (3.96mm) pitch in a single-row configuration. Mating connectors and cable assemblies are fully interchangeable.