TE Connectivity 644383-4 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644383-4 is a 4-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG wire. This connector features a tin-lead contact finish, closed-end design, and polarizing key for secure mating. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing applications and new designs.

Substiute Parts

644383-4

TE Connectivity AMP ConnectorsIn Stock: 891644383-4 Datasheet

Current PartRFQ

3-644383-4

TE Connectivity AMP ConnectorsIn Stock: 11633-644383-4 Datasheet

DirectRFQ

3-643819-4

TE Connectivity AMP ConnectorsIn Stock: 32073-643819-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644383-4 is determined by strict equivalence across the following critical parameters: connector type (rectangular receptacle), number of positions (4), pitch (0.156"), series designation (MTA-156), cable termination method (IDC), wire gauge (22 AWG), contact type (female socket), mounting configuration (free hanging in-line), and presence of polarizing key and closed-end features.

The primary distinction between substitute parts is product status and contact finish specification. The 644383-4 uses tin-lead contact finish and is obsolete. Active alternatives employ tin contact finish, which is RoHS compliant and suitable for new designs and ongoing production requirements.

Parameter Comparison

Engineering Selection Recommendations

3-644383-4 (Direct Substitute): This part is the primary equivalent for the obsolete 644383-4. It maintains identical mechanical and electrical specifications while transitioning from tin-lead to tin contact finish. The part is RoHS compliant and carries active product status, making it suitable for both legacy system maintenance and new production designs. The direct part number relationship (3-644383-4 versus 644383-4) indicates manufacturer-designated equivalence.

3-643819-4 (Similar Substitute): This part provides functional equivalence with identical connector specifications and active product status. The primary distinction is the red connector body color versus black on the main part and direct substitute. This part is ROHS3 compliant and available in bulk packaging. Selection of this part is appropriate when color differentiation is required for circuit identification or when bulk inventory quantities are advantageous.

Both substitute parts eliminate the RoHS non-compliance status of the original 644383-4 and provide active product availability for ongoing procurement.

Frequently Asked Questions (FAQ)

Q: Can the 3-644383-4 be used as a direct replacement for the 644383-4?

A: Yes. The 3-644383-4 is electrically and mechanically equivalent to the 644383-4 across all critical parameters: 4-position configuration, 0.156" pitch, MTA-156 series, IDC termination, 22 AWG wire gauge, female socket contacts, and polarizing key features. The transition from tin-lead to tin contact finish does not affect functional compatibility.

Q: What is the difference between the 3-644383-4 and 3-643819-4?

A: Both parts are functionally equivalent with identical electrical and mechanical specifications. The 3-643819-4 features a red connector body instead of black and is supplied in bulk packaging. Both are active products with RoHS compliance.

Q: Why is the original 644383-4 marked as obsolete?

A: The 644383-4 carries obsolete status due to its tin-lead contact finish, which is non-compliant with RoHS regulations. Active equivalents with tin contact finish are available as replacements.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist between the 644383-4 and its substitutes. All parts share identical pitch, position count, termination method, wire gauge, mounting type, and polarizing key design. Mating with MTA-156 series plugs and cable termination procedures remain unchanged.

Q: What is the significance of the color difference between the black and red connectors?

A: Color serves as a visual identifier for circuit organization and assembly procedures. Functional performance is identical. Selection between black (644383-4, 3-644383-4) and red (3-643819-4) depends on application-specific identification requirements.

Q: Does the contact finish change from tin-lead to tin affect electrical performance?

A: No. Both tin-lead and tin contact finishes meet the electrical requirements for this connector category. The transition to tin reflects RoHS compliance requirements and does not alter contact resistance, current-carrying capacity, or signal integrity.

Q: What packaging options are available?

A: The 644383-4 and 3-644383-4 are available in standard packaging. The 3-643819-4 is available in bulk packaging, which may be advantageous for high-volume production requirements.