TE Connectivity 644759-5 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644759-5 is a vertical rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 5-position connector operates within the MTA-156 series and features shrouded design with friction lock fastening. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing procurement and design requirements.

Substiute Parts

644759-5

TE Connectivity AMP ConnectorsIn Stock: 1108644759-5 Datasheet

Current PartRFQ

3-644759-5

TE Connectivity AMP ConnectorsIn Stock: 20193-644759-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of rectangular connector headers is determined by strict equivalence across electrical and mechanical parameters. The primary substitute for 644759-5 is identified based on the following critical parameters:

Electrical Compatibility:

• Pitch - Mating: 0.156" (3.96mm)
• Number of Positions: 5
• Contact Type: Male Pin
• Voltage Rating: 600VAC
• Operating Temperature Range: -55°C ~ 105°C

Mechanical Compatibility:

• Connector Type: Header
• Mounting Type: Through Hole
• Shrouding: Shrouded - 1 Wall
• Fastening Type: Friction Lock
• Contact Shape: Square
• Insulation Material: Thermoplastic, Glass Filled

Material & Certification:

• Material Flammability Rating: UL94 V-0
• Contact Material: Copper Alloy
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 3-644759-5 maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 3-644759-5 is the direct equivalent for 644759-5 across all electrical and mechanical parameters. Selection of the substitute is based on the following engineering criteria:

Product Status: The main part 644759-5 carries obsolete status, limiting long-term availability and support. The substitute 3-644759-5 maintains active product status, ensuring continued procurement capability and manufacturer support.

Regulatory Compliance: The substitute 3-644759-5 achieves ROHS3 compliance and REACH Unaffected status, compared to the non-compliant status of the main part. This compliance improvement aligns with current regulatory requirements for electronic components in industrial and general-purpose applications.

Contact Finish Specification: The substitute features tin post finish compared to the tin-lead finish of the main part. This change reflects modern manufacturing standards and environmental compliance without affecting electrical or mechanical performance within the specified operating parameters.

Functional Equivalence: All critical parameters determining connector performance—pitch, position count, voltage rating, temperature range, shrouding configuration, and fastening mechanism—remain identical between the main part and substitute.

Frequently Asked Questions (FAQ)

Q: Can 3-644759-5 be used as a direct replacement for 644759-5 in existing designs?

A: Yes. The substitute part 3-644759-5 maintains identical electrical and mechanical specifications across all critical parameters including pitch (0.156"), position count (5), voltage rating (600VAC), operating temperature range (-55°C to 105°C), mounting type (through hole), and shrouding configuration (shrouded - 1 wall). Functional compatibility is complete.

Q: What is the difference in contact finish between the two parts?

A: The main part 644759-5 features tin-lead post finish, while the substitute 3-644759-5 features tin post finish. Both finishes provide equivalent electrical performance and solderability. The tin finish reflects current manufacturing standards and environmental compliance requirements.

Q: Why is the substitute part recommended over the main part?

A: The main part 644759-5 is classified as obsolete, which restricts future availability and manufacturer support. The substitute 3-644759-5 is active and carries ROHS3 compliance and REACH Unaffected status, providing improved regulatory alignment and long-term procurement reliability.

Q: Are there packaging differences between 644759-5 and 3-644759-5?

A: The main part 644759-5 packaging is unspecified. The substitute 3-644759-5 is supplied in bulk packaging. Both parts are identical in form, fit, and function for board-to-cable/wire applications.

Q: What applications are these connectors suitable for?

A: Both parts are rated for general-purpose and industrial applications. The 5-position, 0.156" pitch configuration with through-hole mounting supports standard board-to-cable/wire interconnection requirements within the specified voltage (600VAC) and temperature (-55°C to 105°C) operating ranges.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both 644759-5 and 3-644759-5 carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage, handling, or assembly.

Q: Can these connectors be used in high-temperature applications?

A: Yes. Both parts are rated for continuous operation up to 105°C and can withstand temperatures as low as -55°C, making them suitable for industrial environments within these thermal limits.