TE Connectivity AMP Connectors 3-1437387-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-1437387-4 is a 1 Circuit Eurostyle Terminal Strip Connector with screw termination, designed for chassis and panel mounting applications. This component features a single circuit configuration with two wire entries, rated for 40 amperes at 250 volts, and accommodates wire gauges from 10 to 22 AWG.

The 3-1437387-4 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this connector type is specified or functionally required.

Substiute Parts

3-1437387-4

TE Connectivity AMP ConnectorsIn Stock: 11663-1437387-4 Datasheet

Current PartRFQ

1776302-1

TE Connectivity AMP ConnectorsIn Stock: 16391776302-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3-1437387-4 is determined by strict equivalence across the following critical parameters:

• Terminal Block Type: Must be Eurostyle Terminal Strip
• Number of Circuits: Must be 1
• Number of Wire Entries: Must be 2
• Number of Rows: Must be 2
• Current Rating: Must be 40A minimum
• Voltage Rating: Must be 250V minimum
• Wire Gauge Compatibility: Must accommodate 10-22 AWG
• Top Termination: Must be Screws
• Bottom Termination: Must be Closed
• Barrier Type: Must be Enclosed
• Mounting Type: Must support Chassis and Panel mounting
• Insulation Material: Must be Polyamide (PA66), Nylon 6/6
• Flammability Rating: Must meet UL94 V-2

The substitute part 1776302-1 meets all these criteria and is therefore electrically and mechanically interchangeable with the 3-1437387-4.

Parameter Comparison

Engineering Selection Recommendations

The 1776302-1 is a direct functional equivalent to the 3-1437387-4 across all critical electrical and mechanical parameters. Both components are manufactured by TE Connectivity AMP Connectors within the TSB1000 Buchanan series and share identical specifications for circuit count, wire entry configuration, current and voltage ratings, wire gauge compatibility, termination methods, and insulation materials.

The primary distinction between these parts is product lifecycle status and regulatory compliance. The 3-1437387-4 is obsolete, whereas the 1776302-1 is in active production. The 1776302-1 incorporates non-hexavalent chromate plating on terminal screws, which represents an environmental and regulatory improvement over the clear chromate finish of the 3-1437387-4. Additionally, the 1776302-1 carries ROHS3 compliance and defined REACH status, meeting current regulatory requirements for electronic components.

For new designs, maintenance applications, or component replacement scenarios, the 1776302-1 is the appropriate selection. The substitute part maintains full electrical and mechanical compatibility while providing access to current production inventory and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the 1776302-1 be used as a direct replacement for the 3-1437387-4 in existing applications?

A: Yes. The 1776302-1 is electrically and mechanically equivalent to the 3-1437387-4. Both components share identical specifications for circuit configuration, current and voltage ratings, wire gauge compatibility, termination methods, mounting type, and insulation materials. Physical form factor and pin/terminal layout are identical.

Q: What is the difference between the terminal screw finishes on these two parts?

A: The 3-1437387-4 uses zinc with clear chromate plating, while the 1776302-1 uses zinc with non-hexavalent chromate plating. Non-hexavalent chromate represents a regulatory and environmental improvement and is the current industry standard. Both finishes provide equivalent corrosion protection and electrical performance for the specified application.

Q: Why is the 3-1437387-4 listed as obsolete?

A: The 3-1437387-4 has been discontinued by TE Connectivity AMP Connectors. The 1776302-1 is the active production equivalent that replaces it in the product line.

Q: Are there any packaging differences between these parts?

A: The 3-1437387-4 packaging specification is not defined in available data. The 1776302-1 is supplied in bulk packaging. Confirm packaging requirements with your procurement or supply chain department for specific application needs.

Q: Does the operating temperature range differ between these parts?

A: The 3-1437387-4 specifies an operating range of -35°C to 100°C. The 1776302-1 specifies a maximum operating temperature of 100°C. For applications requiring operation below 0°C, verify that the 1776302-1 meets your specific temperature requirements.

Q: What compliance certifications apply to the 1776302-1?

A: The 1776302-1 is ROHS3 compliant and REACH affected. Both components carry UL94 V-2 flammability ratings. The 1776302-1 provides defined regulatory compliance status, whereas the 3-1437387-4 RoHS status is listed as not applicable.