Pomona Electronics 2439-4 Binding Post Connector - Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 2439-4 is a miniature knurled binding post connector with threaded and turret termination, designed for low-voltage signal and power applications requiring secure panel-mount connections. This connector features a yellow tin-plated brass body with polycarbonate insulation and supports up to 5 amperes at 1500V rms. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and new design implementations where this connector type remains the appropriate choice.

Substiute Parts

2439-4

Pomona ElectronicsIn Stock: 11202439-4 Datasheet

Current PartRFQ

2382-0

Pomona ElectronicsIn Stock: 12082382-0 Datasheet

SimilarRFQ

2382-2

L3 Narda-MITEQIn Stock: 9512382-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2439-4 is determined by strict alignment with the following critical parameters:

• Connector Type & Form Factor: Miniature knurled binding post with identical head dimensions (0.380" OD x 0.086" L)
• Termination Specification: Threaded and turret termination with 8-32 thread size
• Electrical Performance: Current rating of 5 A and voltage rating of 1500V rms
• Mechanical Compatibility: Panel thickness accommodation of 0.070" ~ 0.170"
• Material & Plating Composition: Brass body with appropriate plating; polycarbonate insulation; nickel-plated brass nut
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

Only parts meeting all these criteria qualify as direct substitutes. Parts that deviate in connector category, termination type, electrical ratings, or physical dimensions are not functionally equivalent and cannot be used interchangeably.

Parameter Comparison

Engineering Selection Recommendations

The 2382-0 qualifies as a direct functional substitute for the 2439-4 based on complete alignment of all critical electrical, mechanical, and termination parameters. The primary distinction is the plating material: the 2382-0 features gold plating on the brass body, compared to the tin plating of the 2439-4. Gold plating provides enhanced corrosion resistance and contact reliability in demanding environments. The 2382-0 maintains active product status with Pomona Electronics, ensuring ongoing availability and supply chain continuity.

Selection between these parts should be based on application requirements regarding contact material performance and environmental exposure. Both parts satisfy identical electrical specifications, mechanical compatibility, and regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2382-0 be used as a direct replacement for the 2439-4?

A: Yes. The 2382-0 meets all functional requirements of the 2439-4, including current rating (5 A), voltage rating (1500V rms), termination type (threaded and turret with 8-32 thread), head dimensions, and panel thickness accommodation. The primary difference is body plating material (gold versus tin).

Q: What is the significance of the plating difference between these parts?

A: The 2439-4 uses tin plating, while the 2382-0 uses gold plating. Gold plating offers superior corrosion resistance and contact stability, particularly in high-humidity or chemically aggressive environments. Tin plating is suitable for standard indoor applications with moderate environmental exposure.

Q: Are there any compatibility concerns with panel mounting?

A: No. Both parts accommodate identical panel thickness ranges of 0.070" ~ 0.170" (1.78mm ~ 4.32mm) and share identical head dimensions, ensuring mechanical compatibility with existing panel cutouts and mounting hardware.

Q: Does the color difference affect electrical performance?

A: No. The color difference (yellow versus black) is a cosmetic distinction resulting from the different plating materials. Electrical performance, current capacity, and voltage rating remain identical.

Q: What is the regulatory compliance status of the substitute part?

A: The 2382-0 is ROHS3 compliant and REACH unaffected, matching the compliance profile of the 2439-4. Both parts meet current environmental and hazardous substance regulations.

Q: Why is the 2439-4 listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Pomona Electronics. The 2382-0, with active product status, represents the current production equivalent and is the recommended source for new procurement.