TE Connectivity 647166-8 Rectangular Connector Header: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 647166-8 is a surface mount rectangular connector header designed for board-to-cable/wire applications. This 8-position, single-row header operates at 250VAC with an operating temperature range of -55°C to 105°C. The connector features shrouded design with friction lock fastening and solder termination, making it suitable for general-purpose electronic assemblies requiring reliable mating connections.

The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Identifying equivalent substitute parts is necessary when managing inventory constraints, addressing supply chain variations, or accommodating packaging preferences while maintaining identical electrical and mechanical performance.

Substiute Parts

647166-8

TE Connectivity AMP ConnectorsIn Stock: 985647166-8 Datasheet

Current PartRFQ

3-647166-8

TE Connectivity AMP ConnectorsIn Stock: 18773-647166-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 647166-8 and the equivalent part 3-647166-8 is based on identical electrical and mechanical parameters across all critical specifications. Both parts share the same series designation (MTA-100), connector architecture, contact configuration, and performance ratings.

The substitution logic is determined by the following parameters that must remain constant:

• Connector type, contact type, and gender (Header, Male Pin)
• Number of positions and row configuration (8 positions, 1 row)
• Pitch specification (0.100" / 2.54mm)
• Mounting method (Surface Mount)
• Shrouding design (Shrouded - 1 Wall)
• Termination method (Solder)
• Voltage and temperature ratings (250VAC, -55°C ~ 105°C)
• Insulation material and flammability rating (Polyamide PA46, UL94 V-0)
• Compliance certifications (ROHS3, REACH Unaffected)

The primary distinction between these parts is packaging format and contact finish specification, which do not affect functional interchangeability in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Both 647166-8 and 3-647166-8 are Active status products from TE Connectivity AMP Connectors, maintaining full ROHS3 compliance and REACH unaffected designation. The parts are functionally equivalent for all electrical and mechanical applications.

The contact finish difference between Tin-Lead (647166-8) and Tin (3-647166-8) does not affect interchangeability, as both finishes provide equivalent electrical performance and solder joint reliability within the specified operating parameters.

Selection between these parts should be based on packaging requirements and inventory availability. The 647166-8 is available in standard packaging with 904 pieces in stock, while the 3-647166-8 is supplied in bulk packaging with 1777 pieces in stock. Both parts satisfy identical performance specifications for board-to-cable/wire header applications operating at 250VAC across the -55°C to 105°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can 3-647166-8 be used as a direct replacement for 647166-8 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters including connector type, position count, pitch, mounting method, voltage rating, and temperature range. The parts differ only in packaging format and contact finish specification, neither of which affects functional performance.

Q: What is the difference between the Tin-Lead finish on 647166-8 and the Tin finish on 3-647166-8?

A: Both finishes provide equivalent electrical conductivity and solder joint reliability. The contact finish does not affect the connector's ability to mate, carry current, or operate within the specified voltage and temperature ratings. Selection between these finishes is determined by application-specific requirements or regulatory preferences.

Q: Are both parts RoHS3 compliant?

A: Yes. Both 647166-8 and 3-647166-8 carry ROHS3 Compliant designation and are REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing.

Q: What is the significance of the packaging difference between these parts?

A: The 647166-8 is supplied in standard packaging, while 3-647166-8 is supplied in bulk packaging. This distinction affects order quantities and inventory management but does not influence electrical or mechanical performance. Selection should be based on procurement volume requirements and supply chain logistics.

Q: Do both parts operate at the same voltage and temperature specifications?

A: Yes. Both parts are rated for 250VAC operation and function across the identical temperature range of -55°C to 105°C. Current rating varies by wire gauge for both parts.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts share identical contact length (0.290" / 7.37mm), insulation height (0.347" / 8.81mm), contact shape (Square), and all other mechanical dimensions specified for the MTA-100 series header.

Q: What is the Moisture Sensitivity Level for both parts?

A: Both parts carry MSL 1 (Unlimited) designation, indicating no moisture sensitivity restrictions for storage or handling.