Switchcraft 3504MX RCA Phono Plug Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 3504MX is a mono RCA phono plug connector with 2 conductors and 2 contacts, designed for solder termination in free-hanging (in-line) applications. The connector features a 3.20mm ID and 9.00mm OD mating diameter, nickel-plated copper alloy contacts, and a silver copper alloy body. This part is classified as obsolete, making identification of equivalent alternatives necessary for ongoing system maintenance and component sourcing.

Substiute Parts

3504MX

Switchcraft Inc.In Stock: 7863504MX Datasheet

Current PartRFQ

3507

Keystone ElectronicsIn Stock: 8713507 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the Switchcraft 3504MX is based on the following critical parameters:

• Connector Type & Gender: RCA phono plug, male configuration
• Mating Diameter: 3.20mm ID, 9.00mm OD (RCA standard)
• Contact Configuration: 2 conductors, 2 contacts for mono signal transmission
• Termination Method: Solder connection capability
• Mounting Configuration: Free-hanging (in-line) installation
• Material Compatibility: Copper alloy construction with nickel plating for corrosion resistance
• Regulatory Compliance: ROHS3 and REACH compliance maintained

The Keystone Electronics 3507 is identified as a substitute part within the same series designation. However, note that the 3507 is categorized as a terminal connector with press-fit termination, representing a different connector class than the original solder-terminated RCA plug. Substitution requires verification of mechanical and electrical compatibility within the specific application context.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 3504MX is obsolete and no longer in active production. The Keystone Electronics 3507 maintains ROHS3 and REACH compliance, matching the regulatory requirements of the original part. However, the 3507 represents a different connector class (terminal vs. barrel connector) with distinct termination methodology (press-fit vs. solder). Selection of the 3507 as a substitute requires confirmation that the application can accommodate press-fit termination and the different mechanical form factor. Active product status of the 3507 ensures ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the Keystone Electronics 3507 directly replace the Switchcraft 3504MX in all applications?

A: Direct replacement is not guaranteed. While both parts maintain ROHS3 and REACH compliance, the 3507 uses press-fit termination versus the 3504MX solder termination. The 3507 is also classified as a terminal connector rather than a barrel connector. Application-specific requirements for termination method and mechanical form factor must be evaluated.

Q: What are the key differences between these parts?

A: The primary differences are termination method (solder vs. press-fit), connector category (barrel connector vs. terminal), contact material (copper alloy with nickel vs. beryllium copper with tin-lead), and product status (obsolete vs. active). These differences affect installation methodology, electrical performance, and long-term availability.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the Switchcraft 3504MX and Keystone Electronics 3507 are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations.

Q: What should be considered when selecting a substitute for the 3504MX?

A: Evaluate termination capability (solder vs. press-fit compatibility), mechanical mounting requirements (free-hanging vs. board-mounted), contact material performance in the application environment, and availability of tooling or equipment for press-fit installation if using the 3507.