TE Connectivity 644694-4 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644694-4 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features a 4-position configuration with 0.100" (2.54mm) pitch spacing, suitable for board-to-cable/wire connections in general-purpose applications. The part operates across a temperature range of -55°C to 105°C with a 250VAC voltage rating.

The 644694-4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and repair requirements for legacy systems utilizing this connector type.

Substiute Parts

644694-4

TE Connectivity AMP ConnectorsIn Stock: 1067644694-4 Datasheet

Current PartRFQ

3-644694-4

TE Connectivity AMP ConnectorsIn Stock: 11433-644694-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 644694-4 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 4
• Pitch - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole, Right Angle
• Termination: Kinked Pin, Solder
• Operating Temperature Range: -55°C ~ 105°C
• Voltage Rating: 250VAC
• Material Flammability Rating: UL94 V-0
• Series: MTA-100

The substitute part 3-644694-4 meets all mandatory matching parameters. The primary distinction between the main part and its substitute relates to contact finish specifications and RoHS compliance status. The 644694-4 features Tin-Lead contact finish with RoHS non-compliant status, while the 3-644694-4 features Tin contact finish with ROHS3 compliance. Both parts maintain identical electrical and mechanical interface characteristics, dimensional specifications, and performance ratings.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliant Applications: The 3-644694-4 is the appropriate selection when ROHS3 compliance is required. This part maintains full electrical and mechanical compatibility with the 644694-4 while meeting current regulatory requirements. The transition from Tin-Lead to Tin contact finish aligns with RoHS3 directives and does not compromise connector performance within the specified operating parameters.

For Legacy System Maintenance: The 644694-4 remains suitable for applications where RoHS compliance is not mandated and existing inventory or design specifications explicitly reference the Tin-Lead contact finish. Both parts are classified as obsolete; component availability should be verified through authorized distributors prior to procurement decisions.

Compliance Considerations: Selection between these parts should account for end-application regulatory requirements, supply chain constraints, and any design specifications that reference specific contact finish materials. Both parts carry identical electrical ratings, temperature performance, and mechanical interface specifications.

Frequently Asked Questions (FAQ)

Q: Are the 644694-4 and 3-644694-4 electrically interchangeable?

A: Yes. Both parts maintain identical electrical specifications including 250VAC voltage rating, operating temperature range of -55°C to 105°C, and current-carrying capacity based on wire gauge. The contact finish difference (Tin-Lead versus Tin) does not alter electrical performance within the specified operating parameters.

Q: What is the primary difference between these two parts?

A: The 644694-4 features Tin-Lead contact finish and carries RoHS non-compliant status. The 3-644694-4 features Tin contact finish and is ROHS3 compliant. All other electrical, mechanical, and dimensional specifications are identical.

Q: Can the 3-644694-4 be used as a direct replacement in existing designs?

A: The 3-644694-4 is mechanically and electrically compatible with the 644694-4. However, design specifications should be reviewed to confirm that Tin contact finish is acceptable in place of Tin-Lead finish. For applications where contact finish material is specified, engineering approval is required before substitution.

Q: Are there any dimensional differences between these connectors?

A: No. Both parts share identical dimensional specifications including 0.100" (2.54mm) pitch, 0.260" (6.60mm) mating contact length, 0.110" (2.79mm) post contact length, and 0.100" (2.54mm) insulation height.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Are both parts still available for purchase?

A: Both parts carry obsolete product status. Availability through authorized TE Connectivity distributors should be confirmed. The 3-644694-4 shows higher current inventory (1084 Pcs) compared to the 644694-4 (1025 Pcs) at the time of this documentation.