TE Connectivity 644748-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644748-1 is a rectangular connector header designed for through-hole mounting applications. This connector is a vertical 3-position header with 0.100" (2.54mm) pitch spacing, commonly used in board-to-cable and board-to-board interconnect applications. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. The connector features unshrouded male pin contacts with kinked pin solder termination and operates across a temperature range of -55°C to 105°C.

Substiute Parts

644748-1

TE Connectivity AMP ConnectorsIn Stock: 781644748-1 Datasheet

Current PartRFQ

3-644748-1

TE Connectivity AMP ConnectorsIn Stock: 9233-644748-1 Datasheet

SimilarRFQ

0022112031

MolexIn Stock: 10430022112031 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644748-1 is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (3)
• Number of rows (1)
• Pitch spacing (0.100" / 2.54mm)
• Mounting type (Through Hole)
• Operating temperature range (-55°C ~ 105°C)
• Voltage rating (250VAC)
• Material flammability rating (UL94 V-0)

Secondary Considerations:

• Contact finish composition (Tin-Lead vs. Tin vs. Gold)
• Contact finish thickness specifications
• Insulation material type (Thermoplastic vs. Polyamide/Nylon)
• Insulation height and overall contact length
• Product status and compliance certifications

The substitute parts identified maintain compatibility with the primary matching criteria while presenting variations in contact finish specifications and compliance status that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 3-644748-1: This part maintains identical mechanical and electrical specifications to the main part 644748-1 within the MTA-100 series. The primary distinction is the contact finish specification, which uses Tin instead of Tin-Lead on both mating and post surfaces. This part carries RoHS Compliant status, providing regulatory advantage over the non-compliant main part. Both parts share obsolete product status. Selection of this part is appropriate for applications requiring RoHS compliance while maintaining the original MTA-100 series design characteristics.

Molex 0022112031: This part represents a cross-manufacturer substitute from the Molex KK254/4030 series. It maintains the critical functional parameters: 3-position, 1-row configuration with 0.100" (2.54mm) pitch spacing, through-hole mounting, and UL94 V-0 flammability rating. The Molex part carries Active product status and ROHS3 Compliant certification, providing long-term availability and regulatory compliance. Notable differences include increased contact post length (0.135" vs. 0.110"), increased insulation height (0.130" vs. 0.100"), and gold plating on mating contacts. The Molex part includes push-pull fastening type and polyamide/nylon insulation material. Operating temperature and voltage ratings are not specified for this part. This substitute is suitable for new designs requiring active product availability and modern compliance certifications, with consideration for the dimensional and material variations noted.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 3-644748-1 be used as a direct replacement for the 644748-1?

A: The 3-644748-1 maintains identical mechanical and electrical specifications within the MTA-100 series. The primary difference is the contact finish composition (Tin vs. Tin-Lead) and RoHS compliance status. Direct substitution is supported for applications where the contact finish change and RoHS compliance do not introduce material incompatibilities with mating components or application requirements.

Q: What are the key differences between the TE Connectivity and Molex substitutes?

A: Both parts maintain the core functional requirements of 3-position, 0.100" pitch headers with through-hole mounting. The Molex 0022112031 differs in contact post length (0.135" vs. 0.110"), insulation height (0.130" vs. 0.100"), contact finish (gold mating surface vs. tin-lead), insulation material (polyamide/nylon vs. thermoplastic), and includes push-pull fastening. The Molex part carries Active product status versus Obsolete status for both TE Connectivity parts.

Q: Is the Molex 0022112031 suitable for applications originally designed for the 644748-1?

A: The Molex part maintains compatibility with the primary matching criteria: connector type, contact type, position count, row configuration, pitch spacing, mounting type, and flammability rating. However, the increased contact post length and insulation height may affect board layout and mating component clearances. Applications must be evaluated for dimensional compatibility before substitution.

Q: What compliance certifications should be considered when selecting a substitute?

A: The main part 644748-1 is RoHS non-compliant. The TE Connectivity 3-644748-1 is RoHS Compliant. The Molex 0022112031 is ROHS3 Compliant. Selection should align with application regulatory requirements and end-use market restrictions. All three parts carry UL94 V-0 flammability certification.

Q: Are there packaging differences between these parts?

A: The main part 644748-1 and TE Connectivity 3-644748-1 do not specify packaging information. The Molex 0022112031 is supplied in Bulk packaging. Packaging format may affect procurement, handling, and inventory management processes.

Q: What is the significance of the contact finish differences?

A: The main part uses Tin-Lead finish (150.0µin thickness on both mating and post surfaces). The TE Connectivity 3-644748-1 uses Tin finish (150.0µin thickness). The Molex part uses Gold on mating surfaces (20.0µin) and Tin on post surfaces (100.0µin). Contact finish affects corrosion resistance, solderability, and long-term reliability. Application environment and mating component specifications should guide finish selection.

Q: Why is product status important in selecting a substitute?

A: The main part 644748-1 and TE Connectivity 3-644748-1 are both classified as Obsolete, indicating discontinued production and limited future availability. The Molex 0022112031 carries Active status, indicating current production and long-term availability. For new designs or applications requiring extended production support, the Active status part is preferred.