TE Connectivity 1-641120-8 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-641120-8 is a shrouded rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 18-position connector operates within the MTA-156 series and features a 0.156" (3.96mm) pitch configuration with gold-plated mating contacts and tin-lead plated posts. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design and procurement requirements. Active substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

1-641120-8

TE Connectivity AMP ConnectorsIn Stock: 8481-641120-8 Datasheet

Current PartRFQ

4-641120-8

TE Connectivity AMP ConnectorsIn Stock: 10904-641120-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-641120-8 with the 4-641120-8 is based on strict equivalence across all critical electrical and mechanical parameters. Both parts share identical specifications for connector type, contact configuration, pitch, position count, mounting methodology, and environmental operating range. The substitution is valid because the parts maintain:

• Identical mating pitch of 0.156" (3.96mm)
• Identical 18-position configuration in single-row layout
• Identical through-hole solder termination
• Identical shrouded 1-wall design
• Identical operating temperature range of -55°C to 105°C
• Identical voltage rating of 600VAC
• Identical contact material and geometry specifications
• Identical insulation material and flammability rating

The primary distinction between these parts is product status and compliance certification, with the 4-641120-8 representing an active production variant with RoHS3 compliance, whereas the 1-641120-8 is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The 4-641120-8 is the direct functional equivalent of the 1-641120-8 and is suitable for all applications requiring the MTA-156 series 18-position rectangular connector header. Selection of the 4-641120-8 is supported by the following engineering considerations:

Product Status: The 4-641120-8 maintains active production status, ensuring long-term availability and supply chain continuity. The 1-641120-8 is classified as obsolete, presenting procurement and lifecycle management challenges.

Compliance Certification: The 4-641120-8 carries RoHS3 compliance certification, meeting current regulatory requirements for restricted substances in electrical and electronic equipment. The 1-641120-8 is RoHS non-compliant and does not satisfy modern environmental and regulatory standards.

Contact Finish Specification: The 4-641120-8 features tin-plated posts, whereas the 1-641120-8 uses tin-lead plating. Both finishes are compatible with standard solder reflow processes and provide equivalent electrical performance. The tin-only specification of the 4-641120-8 aligns with lead-free manufacturing initiatives.

Electrical and Mechanical Equivalence: All critical parameters including pitch, position count, contact geometry, operating temperature range, voltage rating, and insulation specifications are identical between the two parts, ensuring direct interchangeability in circuit board designs and cable assemblies.

Frequently Asked Questions (FAQ)

Q: Are the 1-641120-8 and 4-641120-8 electrically interchangeable?

A: Yes. Both parts are electrically equivalent. They share identical pitch (0.156"), position count (18), contact material (copper alloy with gold mating finish), voltage rating (600VAC), and operating temperature range (-55°C to 105°C). The mating interface and electrical performance are identical.

Q: What is the difference between tin-lead and tin contact finishes on the post?

A: The 1-641120-8 uses tin-lead plating on the post, while the 4-641120-8 uses tin-only plating. Both finishes are compatible with standard solder reflow and wave soldering processes. Tin-only plating aligns with lead-free manufacturing standards and RoHS compliance requirements.

Q: Can I use the 4-641120-8 as a direct replacement for the 1-641120-8 in existing designs?

A: Yes. The 4-641120-8 is a direct mechanical and electrical substitute. No design modifications are required. The parts are dimensionally identical and functionally equivalent for all board-to-cable/wire applications within the specified operating parameters.

Q: Why is the 1-641120-8 marked as obsolete?

A: The 1-641120-8 has been superseded by the 4-641120-8 in the manufacturer's product line. The 4-641120-8 offers improved compliance certifications (RoHS3) and represents the current active production variant of this connector header configuration.

Q: What is the packaging difference between these parts?

A: The 1-641120-8 packaging specification is not defined in the available data. The 4-641120-8 is supplied in bulk packaging. For specific packaging requirements, consult the manufacturer's packaging specifications or contact the supplier directly.

Q: Are both parts suitable for industrial applications?

A: Yes. Both the 1-641120-8 and 4-641120-8 are rated for general purpose and industrial applications. They meet UL94 V-0 flammability requirements and operate across the industrial temperature range of -55°C to 105°C.

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

A: Both parts carry a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special moisture control measures. Standard storage conditions are suitable for these components.