TE Connectivity 644463-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644463-3 is a 3-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 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 644463-3 is classified as obsolete. Locating equivalent and substitute parts is necessary to support legacy system maintenance, repair, and continued field deployment where this connector type remains in use.

Substiute Parts

644463-3

TE Connectivity AMP ConnectorsIn Stock: 950644463-3 Datasheet

Current PartRFQ

3-644463-3

TE Connectivity AMP ConnectorsIn Stock: 12273-644463-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644463-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle)
• Number of positions (3)
• Pitch specification (0.156" / 3.96mm)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge (22 AWG)
• Wire type compatibility (Discrete or Ribbon Cable)
• Mounting type (Free Hanging In-Line)
• Features (Closed End, Polarizing Key)
• Series designation (MTA-156)
• Contact finish thickness (80.0µin / 2.03µm)

The substitute part 3-644463-3 maintains full equivalence across all mandatory parameters. The primary distinction between the main part and its substitute is the contact finish material (tin-lead versus tin) and product status classification (obsolete versus active).

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement:

The 3-644463-3 serves as the direct active-status equivalent to the obsolete 644463-3. Both parts maintain identical mechanical and electrical specifications across all critical connector parameters. The substitute part is currently in active production status with 1171 units available in inventory, compared to 878 units of the obsolete main part.

Compliance Considerations:

The 644463-3 is RoHS non-compliant and carries REACH Affected status. The substitute part 3-644463-3 achieves ROHS3 compliance, making it suitable for applications subject to RoHS3 regulatory requirements. The contact finish change from tin-lead to tin aligns with RoHS3 material restrictions.

Both parts carry identical ECCN (EAR99) and HTSUS (8536.69.8000) classifications, indicating no change in export control or tariff status.

Moisture Sensitivity:

Both parts maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can the 3-644463-3 directly replace the 644463-3 in existing applications?

A: Yes. The 3-644463-3 maintains full mechanical and electrical equivalence to the 644463-3 across all connector parameters including pitch, contact type, termination method, wire gauge, and mounting configuration. Both parts are MTA-156 series receptacles with identical 3-position, 0.156" pitch specifications.

Q: What is the difference between the tin-lead finish on the 644463-3 and the tin finish on the 3-644463-3?

A: The contact finish material differs between the two parts. The 644463-3 uses tin-lead plating, while the 3-644463-3 uses tin plating. Both maintain the same 80.0µin (2.03µm) finish thickness. The tin finish on the substitute part aligns with ROHS3 compliance requirements that restrict lead content in electronic components.

Q: Why is the 644463-3 classified as obsolete?

A: The 644463-3 is no longer in active production. The 3-644463-3 represents the current active-production equivalent that supersedes the obsolete part number.

Q: Are there packaging differences between these parts?

A: The 644463-3 packaging is listed as unspecified in available documentation. The 3-644463-3 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Does the RoHS3 compliance of the 3-644463-3 affect compatibility?

A: No. RoHS3 compliance is a material composition and manufacturing standard, not a functional or mechanical specification. The 3-644463-3 maintains identical electrical and mechanical performance to the 644463-3. RoHS3 compliance makes the substitute part suitable for applications subject to RoHS3 regulatory requirements.

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

A: Yes. Both the 644463-3 and 3-644463-3 support discrete or ribbon cable termination via IDC method at 22 AWG wire gauge.

Q: What is the polarizing key feature?

A: The polarizing key is a mechanical feature that ensures correct orientation during connector mating, preventing reversed or incorrect insertion of mating connectors.