TE Connectivity 644574-4 MTA-100 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644574-4 is a 4-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG discrete or ribbon cable. This connector features a closed-end design with tin-lead contact finish and is configured as a free-hanging in-line component with locking ramp fastening. The part is active in production and RoHS compliant, making it suitable for applications requiring reliable board-to-cable interconnection in industrial and commercial electronics. Equivalent and substitute parts are identified to provide procurement flexibility, inventory alternatives, and continuity of supply for this connector series.

Substiute Parts

644574-4

TE Connectivity AMP ConnectorsIn Stock: 935644574-4 Datasheet

Current PartRFQ

3-644574-4

TE Connectivity AMP ConnectorsIn Stock: 22783-644574-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 644574-4 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Rectangular receptacle
• Number of positions: 4
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Contact type: Female socket
• Cable termination: IDC
• Wire gauge: 24 AWG
• Wire type: Discrete or ribbon cable
• Fastening type: Locking ramp
• Contact finish thickness: 80.0µin (2.03µm)
• Color: Black
• Series: MTA-100
• RoHS compliance: Yes
• Moisture sensitivity level: 1

Allowable Variations:

• Mounting type: Free hanging (in-line) or right angle configurations are functionally compatible
• Contact finish: Tin-lead or tin finishes are electrically and mechanically equivalent
• Packaging: Bulk or standard packaging does not affect connector performance

The substitute part 3-644574-4 meets all mandatory matching parameters and represents a direct functional equivalent with allowable variations in mounting configuration and contact finish material.

Parameter Comparison

Engineering Selection Recommendations

Both the TE Connectivity 644574-4 and its substitute 3-644574-4 are active production parts with full RoHS compliance and identical moisture sensitivity ratings. Selection between these parts is based on the following engineering criteria:

Primary Selection Criteria:

1. Mounting Configuration Requirement: The main part 644574-4 is specified for free-hanging in-line mounting. The substitute 3-644574-4 supports both in-line and right-angle mounting configurations. Selection of the substitute is appropriate when right-angle board-to-cable orientation is required.

2. Contact Finish Specification: The main part features tin-lead contact finish, while the substitute uses tin finish. Both finishes provide equivalent electrical conductivity and mechanical performance at the specified 80.0µin thickness. Selection of the tin-finish substitute is appropriate for applications with RoHS compliance requirements or when lead-free soldering processes are employed.

3. Inventory and Packaging: The substitute part 3-644574-4 is available in bulk packaging with higher inventory levels (2198 pcs vs. 893 pcs). Selection of the substitute is appropriate for high-volume procurement or when bulk packaging aligns with supply chain requirements.

4. Regulatory Compliance: Both parts maintain identical RoHS compliance status and moisture sensitivity ratings, ensuring equivalent regulatory acceptance across applications.

Frequently Asked Questions (FAQ)

Q: Can the 3-644574-4 substitute directly replace the 644574-4 in existing designs?

A: Yes. The substitute part 3-644574-4 is functionally equivalent to the 644574-4 across all critical electrical and mechanical parameters. Both are 4-position MTA-100 series receptacles with identical pitch, contact type, IDC termination, and 24 AWG wire gauge specifications. The substitute maintains identical contact finish thickness and RoHS compliance status.

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

A: Both finishes provide equivalent electrical conductivity and mechanical performance at the specified 80.0µin (2.03µm) thickness. The tin-lead finish in the main part 644574-4 contains lead, while the tin finish in the substitute 3-644574-4 is lead-free. Selection depends on soldering process compatibility and regulatory requirements for the end application.

Q: Does the right-angle mounting option in the substitute part affect connector compatibility?

A: No. The substitute part 3-644574-4 supports both free-hanging in-line and right-angle mounting configurations. The in-line configuration is compatible with the main part's mounting specification. Right-angle mounting is an additional option available with the substitute and does not affect compatibility when in-line mounting is used.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts are identical in electrical performance. They share the same contact type (female socket), pitch (0.100"), number of positions (4), wire gauge (24 AWG), and contact finish thickness (80.0µin). Electrical characteristics are determined by these parameters, which are identical across both parts.

Q: What packaging differences exist between the main part and substitute?

A: The main part 644574-4 is supplied in standard packaging, while the substitute 3-644574-4 is supplied in bulk packaging. Packaging does not affect connector performance or compatibility. Bulk packaging may be preferred for high-volume applications or when supply chain consolidation is required.

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

A: Yes. Both the 644574-4 and 3-644574-4 are specified for use with discrete or ribbon cable at 24 AWG wire gauge. The IDC termination method accommodates both cable types without modification.

Q: Are both parts suitable for industrial applications?

A: Yes. Both parts are active production components with RoHS compliance and moisture sensitivity level 1 (unlimited), making them suitable for industrial and commercial electronics applications. The identical specifications ensure equivalent reliability and performance in these environments.