Switchcraft 3558-2 RCA Phono Plug Mono Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 3558-2 is a barrel connector classified as a Phono (RCA) Plug Mono Connector with 2 conductors and 2 contacts. This connector features a 3.20mm ID, 9.00mm OD mating diameter and solder termination for in-line applications. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

3558-2

Switchcraft Inc.In Stock: 10113558-2 Datasheet

Current PartRFQ

35582X

Switchcraft Inc.In Stock: 93335582X Datasheet

DirectRFQ

3501MCX

Switchcraft Inc.In Stock: 9623501MCX Datasheet

SimilarRFQ

35581X

Switchcraft Inc.In Stock: 77335581X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Switchcraft 3558-2 is determined by the following critical parameters:

• Connector Type & Mating Diameter: All substitute parts must be Phono (RCA) Plug connectors with 3.20mm ID, 9.00mm OD mating diameter to ensure mechanical compatibility with existing mating receptacles.
• Gender & Signal Configuration: All substitutes must be male connectors with mono signal configuration and 2 conductors, 2 contacts.
• Mounting & Termination: All substitutes must feature free hanging (in-line) mounting and solder termination.
• Physical Dimensions: Mating length/depth of 0.640" (16.30mm) and cable opening of 0.203" (5.16mm) must be maintained.
• Housing & Body Material: Thermoplastic housing and copper alloy body material ensure consistent mechanical and thermal performance.

The three substitute parts listed—35582X, 35581X, and 3501MCX—meet all critical substitution parameters. Differences in contact plating material, body color, and electrical ratings do not affect basic connector functionality within the RCA phono plug category.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—35582X, 35581X, and 3501MCX—satisfy the core mechanical and electrical substitution criteria for the obsolete Switchcraft 3558-2.

35582X and 35581X are direct series equivalents from the 3558 family with active product status. Both parts are ROHS3 compliant and include specified operating temperature ranges (-40°C ~ 85°C) and electrical ratings (250VAC, 140VDC, 6 A). The primary difference between these two parts is contact plating material (copper alloy versus gold) and body color (silver/black versus red). Selection between these two should be based on application-specific requirements for contact durability and visual identification needs.

3501MCX is from the 3501M series and also maintains active product status with ROHS3 compliance. This part meets all critical mechanical substitution parameters, though mating length/depth and cable opening specifications are not provided in the available data.

For new designs or long-term procurement, 35582X or 35581X are preferred due to complete specification documentation and confirmed dimensional compatibility. The choice between these two depends on whether gold plating or specific body color coding is required for the application.

Frequently Asked Questions (FAQ)

Q: Can the 3558-2 be directly replaced with 35582X, 35581X, or 3501MCX?

A: Yes. All three substitute parts share the critical mechanical parameters: Phono (RCA) Plug connector type, 3.20mm ID / 9.00mm OD mating diameter, male gender, mono signal configuration, 2 conductors/2 contacts, free hanging in-line mounting, solder termination, and unshielded design. Mating with existing RCA receptacles is mechanically compatible.

Q: What is the difference between 35582X and 35581X?

A: Both parts are from the 3558 series with identical mechanical dimensions and electrical ratings. The primary differences are contact plating material (35582X uses copper alloy plating; 35581X uses gold plating) and body color (35582X is silver/black; 35581X is red). Gold plating in 35581X provides enhanced corrosion resistance and contact durability in demanding environments.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 35582X, 35581X, and 3501MCX are all ROHS3 compliant. The original 3558-2 is RoHS non-compliant, making these substitutes suitable for applications requiring RoHS compliance.

Q: What are the electrical specifications for the substitute parts?

A: 35582X and 35581X are rated for 250VAC, 140VDC with a 6 A current rating and operating temperature range of -40°C ~ 85°C. Electrical specifications for 3501MCX are not provided in the available data.

Q: Does packaging differ between the substitute parts?

A: All substitute parts are supplied in bulk packaging. The original 3558-2 packaging type is not specified. Bulk packaging is standard for these connector types.

Q: Which substitute part should be selected for new designs?

A: For new designs, 35582X or 35581X are recommended due to complete specification documentation, active product status, and confirmed dimensional compatibility. Selection between these two should be based on contact plating requirements (standard copper alloy versus enhanced gold plating) and any visual identification needs (color coding).