TE Connectivity AMP Connectors 4-1437387-7 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-1437387-7 is a 7 Circuit 0.472" (12.00mm) Eurostyle Terminal Strip Connector with screw termination. This terminal block is designed for chassis and panel mounting applications requiring secure wire connections with a current capacity of 50A at 250V. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure compliance with current manufacturing standards.

Substiute Parts

4-1437387-7

TE Connectivity AMP ConnectorsIn Stock: 7224-1437387-7 Datasheet

Current PartRFQ

1776303-7

TE Connectivity AMP ConnectorsIn Stock: 12111776303-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-1437387-7 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Current Rating: 50A
• Voltage Rating: 250V
• Wire Gauge Acceptance: 8-22 AWG

Mechanical Compatibility:

• Terminal Block Type: Eurostyle Terminal Strip
• Number of Circuits: 7
• Pitch: 0.472" (12.00mm)
• Number of Rows: 2
• Number of Wire Entries: 14
• Top Termination Method: Screws
• Bottom Termination: Closed
• Barrier Type: Enclosed
• Mounting Type: Chassis, Panel

Material & Environmental Compatibility:

• Insulation Material: Polyamide (PA66), Nylon 6/6
• Flammability Rating: UL94 V-2
• Operating Temperature: 100°C

The substitute part 1776303-7 maintains identical electrical and mechanical specifications while offering improved regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 1776303-7 is the direct equivalent for the obsolete 4-1437387-7. Both components are manufactured by TE Connectivity AMP Connectors within the TSB1000 Buchanan series and maintain identical electrical and mechanical specifications.

Primary Advantages of 1776303-7:

1. Active Product Status: The substitute part is currently in active production, ensuring long-term availability and supply chain reliability.

2. Regulatory Compliance: Part 1776303-7 is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original part 4-1437387-7 is RoHS non-compliant.

3. Material Specification Update: The terminal screw finish has been upgraded from Zinc, Chromate to Zinc, Non-Hexavalent Chromate, eliminating hexavalent chromium in accordance with modern environmental standards.

4. Functional Equivalence: All electrical ratings, mechanical dimensions, termination methods, and environmental specifications remain unchanged, ensuring direct substitution without circuit redesign or application modification.

Selection of 1776303-7 is appropriate for new designs, production restocking, and replacement applications where the original 4-1437387-7 is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the 1776303-7 be used as a direct replacement for the 4-1437387-7 in existing applications?

A: Yes. The 1776303-7 maintains identical electrical ratings (50A, 250V), mechanical configuration (7 circuits, 0.472" pitch), wire gauge acceptance (8-22 AWG), and termination method (screw top, closed bottom). Physical dimensions and mounting interfaces are equivalent, enabling direct substitution without modification.

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

A: The original 4-1437387-7 uses Zinc, Chromate finish. The substitute 1776303-7 uses Zinc, Non-Hexavalent Chromate finish. Both provide corrosion protection; the non-hexavalent chromate formulation eliminates hexavalent chromium, aligning with current environmental regulations.

Q: Why is the 4-1437387-7 listed as obsolete?

A: The 4-1437387-7 has been discontinued by TE Connectivity AMP Connectors. The 1776303-7 is the active production equivalent that replaces it in the product line.

Q: Are there packaging differences between these parts?

A: The 4-1437387-7 original packaging specification is not provided. The 1776303-7 is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Do both parts meet the same flammability and temperature requirements?

A: Yes. Both parts are rated UL94 V-2 for flammability and operate at a maximum temperature of 100°C. Environmental performance characteristics are identical.

Q: Is the 1776303-7 suitable for new product designs?

A: Yes. The 1776303-7 is an active product with current manufacturing support, ROHS3 compliance, and improved material specifications. It is appropriate for new designs requiring a 7-circuit, 50A, 250V Eurostyle terminal strip with 0.472" pitch.