TE Connectivity 6-1437387-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 6-1437387-3 is an 8-circuit Eurostyle terminal strip connector with 0.531" (13.50mm) pitch spacing, designed for chassis and panel mounting applications. This component features screw-based termination on the top and closed bottom termination, rated for 40A at 300V with wire gauge compatibility of 8-18 AWG. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new design implementations.

Substiute Parts

6-1437387-3

TE Connectivity AMP ConnectorsIn Stock: 8246-1437387-3 Datasheet

Current PartRFQ

1776311-8

TE Connectivity AMP ConnectorsIn Stock: 10181776311-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 6-1437387-3 is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Number of circuits (8), current rating (40A), voltage rating (300V), and wire gauge compatibility (8-18 AWG) must remain identical.

Mechanical Configuration: Pitch spacing (0.531" / 13.50mm), number of rows (2), number of wire entries (16), terminal block type (Eurostyle Terminal Strip), top termination method (Screws), and bottom termination (Closed) must be maintained.

Environmental & Material Specifications: Operating temperature (100°C), insulation material (Polyamide PA66, Nylon 6/6), and flammability rating (UL94 V-2) must be consistent.

Mounting Requirements: Chassis and panel mounting capability must be preserved.

The substitute part 1776311-8 satisfies all these parameters while offering improved compliance status and availability.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 1776311-8 provides direct functional equivalence to the obsolete 6-1437387-3 across all critical electrical, mechanical, and environmental parameters. Both components are manufactured by TE Connectivity AMP Connectors within the TSB1500 Buchanan series and maintain identical specifications for circuit count, current and voltage ratings, wire gauge compatibility, termination methods, and operating temperature.

The primary distinction between these parts is product status and compliance posture. The 6-1437387-3 is classified as obsolete and carries "Not applicable" RoHS status, whereas 1776311-8 is an active product with RoHS Compliant certification. The terminal screw finish differs slightly: the main part uses Zinc, Chromate while the substitute employs Zinc, Non-Hexavalent Chromate, representing an environmental compliance improvement without affecting electrical or mechanical performance.

For new designs and ongoing system support, 1776311-8 is the appropriate selection due to its active product status, improved regulatory compliance, and equivalent technical specifications. The substitute part is available in bulk packaging and maintains full compatibility with existing mechanical and electrical requirements.

Frequently Asked Questions (FAQ)

Q: Can 1776311-8 be used as a direct replacement for 6-1437387-3 in existing assemblies?

A: Yes. Both parts are functionally equivalent across all critical parameters: 8 circuits, 0.531" pitch, 40A current rating, 300V voltage rating, 8-18 AWG wire gauge compatibility, screw-based top termination, and identical mounting configurations. Physical dimensions and electrical performance are identical.

Q: What is the significance of the RoHS Compliant status on 1776311-8?

A: The substitute part 1776311-8 meets RoHS (Restriction of Hazardous Substances) requirements, indicating compliance with environmental regulations restricting lead, cadmium, mercury, and other hazardous materials. The main part 6-1437387-3 carries "Not applicable" status due to its obsolete classification. For new designs and regulated applications, the RoHS Compliant substitute is preferred.

Q: Does the terminal screw finish difference affect performance?

A: No. The main part uses Zinc, Chromate finish while the substitute uses Zinc, Non-Hexavalent Chromate finish. Both provide equivalent corrosion resistance and electrical conductivity. The non-hexavalent chromate formulation represents an environmental improvement without compromising functional performance.

Q: Are there packaging differences between these parts?

A: The main part 6-1437387-3 packaging is not specified in available documentation. The substitute 1776311-8 is supplied in bulk packaging. Both parts are available in new original condition with confirmed inventory.

Q: What is the pitch specification and why is it critical?

A: Both parts feature 0.531" (13.50mm) pitch spacing, which defines the center-to-center distance between adjacent circuits. This specification is critical for mechanical compatibility with PCB layouts, mounting hardware, and interconnecting components. Pitch equivalence ensures direct physical interchangeability.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 6-1437387-3 and 1776311-8 are rated for 100°C maximum operating temperature and utilize identical insulation material (Polyamide PA66, Nylon 6/6) with UL94 V-2 flammability rating. Thermal performance is equivalent.

Q: What wire gauge range is supported?

A: Both parts support 8-18 AWG wire gauge, providing compatibility with a wide range of conductor sizes for industrial and commercial applications.