TE Connectivity AMP Connectors 644766-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644766-8 is a rectangular connector header designed for through-hole mounting applications. This connector features 8 vertical positions with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable and board-to-board interconnections in general purpose and industrial applications. The part is classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure ongoing component availability for production and field service requirements.

Substiute Parts

644766-8

TE Connectivity AMP ConnectorsIn Stock: 704644766-8 Datasheet

Current PartRFQ

3-644766-8

TE Connectivity AMP ConnectorsIn Stock: 7853-644766-8 Datasheet

DirectRFQ

0026482085

MolexIn Stock: 15740026482085 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 644766-8 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Connector type: Header
• Contact type: Male Pin
• Number of positions: 8
• Pitch spacing: 0.156" (3.96mm)
• Mounting type: Through Hole
• Shrouding configuration: Shrouded - 1 Wall
• Termination method: Solder
• Fastening type: Friction Lock
• Voltage rating: 600VAC minimum
• Operating temperature range: -55°C ~ 105°C minimum
• Material flammability: UL94 V-0

The substitute parts identified maintain these core electrical and mechanical parameters, ensuring functional compatibility within the original design envelope. Variations in contact geometry, insulation material composition, and contact finish specifications are secondary considerations that do not preclude substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - TE Connectivity 3-644766-8:

The TE Connectivity 3-644766-8 is the primary direct equivalent for the obsolete 644766-8. This part maintains identical electrical and mechanical specifications across all critical parameters, including pitch spacing, contact geometry, voltage rating, and operating temperature range. The 3-644766-8 is classified as active product status, ensuring ongoing availability. The primary distinction is RoHS compliance status: the 3-644766-8 is RoHS Compliant, whereas the original 644766-8 is RoHS non-compliant. This upgrade in regulatory compliance is advantageous for new designs and production environments subject to RoHS requirements. The contact finish on the post has been updated from Tin-Lead to Tin, aligning with modern lead-free manufacturing standards. This part is recommended as the first-choice substitute for direct replacement applications.

Alternative Substitute - Molex 0026482085:

The Molex 0026482085 provides functional substitution for applications where cross-manufacturer compatibility is acceptable. This part maintains the critical parameters of 8-position, 0.156" (3.96mm) pitch, through-hole solder termination, and friction lock fastening. The Molex connector is classified as active product status with ROHS3 compliance. Dimensional variations exist in contact length and insulation height, with the Molex part featuring slightly longer overall contact length (0.750" versus 0.700") and greater insulation height (0.500" versus 0.425"). These dimensional differences require verification against PCB layout and mating connector specifications to ensure mechanical compatibility. The Molex part utilizes brass contact material and polyester insulation, differing from the copper alloy and thermoplastic glass-filled insulation of the TE Connectivity parts. Operating temperature range and voltage rating specifications are not provided for the Molex part. The Molex 0026482085 is suitable for applications where dimensional tolerance and material composition variations are acceptable and where cross-manufacturer sourcing is strategically beneficial.

Frequently Asked Questions (FAQ)

Q: Can the 3-644766-8 be used as a direct replacement for the obsolete 644766-8?

A: Yes. The 3-644766-8 maintains identical electrical and mechanical specifications for all critical parameters including pitch spacing (0.156"), number of positions (8), voltage rating (600VAC), operating temperature range (-55°C to 105°C), and mounting configuration. The primary differences are product status (active versus obsolete) and RoHS compliance status (compliant versus non-compliant). The 3-644766-8 is the recommended direct equivalent.

Q: What are the key differences between the TE Connectivity 3-644766-8 and the Molex 0026482085?

A: Both parts share the same pitch spacing (0.156"), position count (8), shrouding configuration, and solder termination method. Differences include: contact length (TE: 0.400" mating / Molex: 0.450" mating), overall contact length (TE: 0.700" / Molex: 0.750"), insulation height (TE: 0.425" / Molex: 0.500"), contact material (TE: Copper Alloy / Molex: Brass), insulation material (TE: Thermoplastic Glass Filled / Molex: Polyester), and contact finish thickness on mating surface (TE: 15.0µin / Molex: 20.0µin). These dimensional and material differences require compatibility verification with mating connectors and PCB layouts.

Q: Are there packaging differences between the substitute parts?

A: The 644766-8 original part does not specify packaging type. Both the 3-644766-8 and 0026482085 are supplied in Bulk packaging. Inventory availability differs: 3-644766-8 has 733 pieces in stock, while 0026482085 has 1557 pieces in stock.

Q: What is the significance of the RoHS compliance difference?

A: The original 644766-8 is RoHS non-compliant, while the 3-644766-8 is RoHS Compliant and the 0026482085 is ROHS3 Compliant. RoHS compliance indicates the part does not contain restricted substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers) above specified thresholds. For applications subject to RoHS regulations or customer requirements, the compliant alternatives are necessary.

Q: Can the Molex 0026482085 be used in applications originally designed for the TE Connectivity 644766-8?

A: The Molex 0026482085 maintains compatibility for the core electrical and mechanical functions (8-position, 0.156" pitch, solder termination, friction lock fastening). However, dimensional variations in contact length and insulation height require verification against specific PCB layout, mating connector specifications, and mechanical clearance requirements. The Molex part features a breakaway connector option not present in the TE Connectivity design. Compatibility assessment must be performed on a design-specific basis.

Q: What is the operating temperature range for the Molex 0026482085?

A: The operating temperature range is not specified in the provided data for the Molex 0026482085. The TE Connectivity parts (644766-8 and 3-644766-8) are rated for -55°C to 105°C. For applications requiring confirmed temperature specifications, the TE Connectivity 3-644766-8 is the recommended choice.

Q: Are all three parts rated for 600VAC?

A: The TE Connectivity 644766-8 and 3-644766-8 are both rated for 600VAC. The voltage rating for the Molex 0026482085 is not specified in the provided data. For applications requiring confirmed voltage specifications, the TE Connectivity 3-644766-8 is the recommended choice.

Q: What is the difference between Tin-Lead and Tin contact finish on the post?

A: The original 644766-8 uses Tin-Lead finish on the post, while the 3-644766-8 uses Tin finish. Tin finish aligns with lead-free manufacturing standards and RoHS compliance requirements. Both finishes provide adequate solder joint formation and electrical conductivity for through-hole termination applications.