TE Connectivity 6-1437387-2 Eurostyle Terminal Strip Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 6-1437387-2 is a 4-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 6-1437387-2 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this terminal block configuration.

Key Parameters

Parameter	Value
Terminal Block Type	Eurostyle Terminal Strip
Number of Circuits	4
Pitch	0.531" (13.50mm)
Number of Rows	2
Current Rating	40A
Voltage Rating	300V
Wire Gauge	8-18 AWG
Top Termination	Screws
Bottom Termination	Closed
Barrier Type	Enclosed
Operating Temperature	100°C
Insulation Material	Polyamide (PA66), Nylon 6/6
Flammability Rating	UL94 V-2
Mounting Type	Chassis, Panel

Substitute Part Grouping Explanation

Substitution eligibility for the 6-1437387-2 is determined by strict equivalence across the following critical parameters:

Circuit Configuration: 4 circuits with 8 wire entries
Pitch Spacing: 0.531" (13.50mm) center-to-center distance
Electrical Ratings: 40A current capacity and 300V voltage rating
Termination Method: Screw-based top termination with closed bottom configuration
Physical Dimensions: 2-row Eurostyle terminal strip layout
Wire Compatibility: 8-18 AWG wire gauge acceptance
Environmental Specifications: 100°C operating temperature and UL94 V-2 flammability classification
Insulation Composition: Polyamide (PA66) / Nylon 6/6 material

The substitute part TE Connectivity 1776311-4 meets all these critical parameters, ensuring functional and mechanical compatibility with the original 6-1437387-2 design.

Parameter Comparison

Parameter	6-1437387-2 (Main Part)	1776311-4 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	TSB1500, Buchanan	TSB1500, Buchanan
Terminal Block Type	Eurostyle Terminal Strip	Eurostyle Terminal Strip
Number of Circuits	4	4
Number of Wire Entries	8	8
Pitch	0.531" (13.50mm)	0.531" (13.50mm)
Number of Rows	2	2
Current Rating (Amps)	40A	40A
Voltage Rating	300V	300V
Wire Gauge	8-18 AWG	8-18 AWG
Top Termination	Screws	Screws
Bottom Termination	Closed	Closed
Barrier Type	Enclosed	Enclosed
Color	Natural	Natural
Terminal Screw Material	Steel	Steel
Terminal Screw Finish	Zinc, Chromate	Zinc, Non-Hexavalent Chromate
Mounting Type	Chassis, Panel	Chassis, Panel
Operating Temperature	100°C	100°C
Insulation Material	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6
Flammability Rating	UL94 V-2	UL94 V-2
Product Status	Obsolete	Active
RoHS Status	Not applicable	RoHS Compliant
REACH Status	Vendor Undefined	REACH Affected

Engineering Selection Recommendations

The TE Connectivity 1776311-4 serves as a direct functional equivalent to the obsolete 6-1437387-2. Both components share identical electrical ratings, mechanical dimensions, and termination specifications within the TSB1500 Buchanan series.

The primary distinction between these parts lies in regulatory compliance and product lifecycle status. The 1776311-4 carries active product status with RoHS compliance certification, whereas the 6-1437387-2 is classified as obsolete with undefined RoHS status. The 1776311-4 also features non-hexavalent chromate screw finish, representing an updated material specification aligned with current environmental standards.

For new designs or ongoing production requiring this terminal block configuration, the 1776311-4 is the appropriate selection. For legacy system maintenance where the original 6-1437387-2 specification must be preserved, the 1776311-4 provides full electrical and mechanical compatibility while offering improved regulatory standing and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the 1776311-4 be used as a direct replacement for the 6-1437387-2 in existing assemblies?

A: Yes. Both components are identical in circuit count, pitch spacing, electrical ratings, wire gauge compatibility, and termination method. The 1776311-4 is mechanically and electrically interchangeable with the 6-1437387-2.

Q: What is the difference in terminal screw finish between these parts?

A: The 6-1437387-2 uses zinc chromate finish, while the 1776311-4 uses zinc non-hexavalent chromate finish. Both finishes provide corrosion protection; the non-hexavalent chromate formulation in the 1776311-4 reflects updated environmental compliance standards.

Q: Why is the 6-1437387-2 listed as obsolete?

A: Product obsolescence indicates that the manufacturer has discontinued production and support for this part number. The 1776311-4 remains in active production and represents the current equivalent offering from TE Connectivity.

Q: Are there packaging differences between these parts?

A: The 6-1437387-2 packaging specification is not defined in the available data. The 1776311-4 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Does the 1776311-4 meet RoHS requirements?

A: Yes. The 1776311-4 is RoHS compliant. The 6-1437387-2 carries undefined RoHS status. If RoHS compliance is required for your application, the 1776311-4 is the appropriate selection.

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

A: Yes. Both the 6-1437387-2 and 1776311-4 are rated for 100°C maximum operating temperature and share identical UL94 V-2 flammability classification.

Q: Can these parts be used in the same PCB layout or mounting configuration?

A: Yes. Both components feature identical pitch spacing (0.531"), row configuration (2 rows), and mounting type (chassis, panel), ensuring compatibility with the same mechanical mounting and layout specifications.

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