Switchcraft 3558-1 RCA Phono Plug Mono Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 3558-1 is a barrel connector classified as a Phono (RCA) Plug for mono audio applications. This connector features a 3.20mm ID, 9.00mm OD mating diameter with solder termination and accommodates 2 conductors. The 3558-1 is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where this connector type is specified.

Substiute Parts

3558-1

Switchcraft Inc.In Stock: 11033558-1 Datasheet

Current PartRFQ

35581X

Switchcraft Inc.In Stock: 77335581X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Switchcraft 35581X qualifies as a direct substitute for the 3558-1 based on the following critical parameters:

• Identical connector type: Phono (RCA) Plug
• Identical gender: Male
• Identical signal configuration: Mono
• Identical mating diameter: 3.20mm ID, 9.00mm OD (RCA)
• Identical contact count: 2 Conductors, 2 Contacts
• Identical mounting type: Free Hanging (In-Line)
• Identical termination method: Solder
• Identical shielding: Unshielded
• Identical mating length/depth: 0.640" (16.30mm)
• Identical cable opening: 0.203" (5.16mm)
• Identical housing material: Thermoplastic
• Same series designation: 3558

The 35581X represents an active product variant within the same 3558 series, providing mechanical and electrical compatibility with the obsolete 3558-1.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 35581X is the appropriate substitute for the obsolete 3558-1. The 35581X maintains full mechanical and electrical compatibility through identical connector geometry, contact configuration, and termination specifications.

The 35581X offers additional advantages: it carries active product status ensuring continued availability, complies with ROHS3 standards, and provides documented operating temperature range (-40°C ~ 85°C) and electrical ratings (250VAC, 140VDC, 6 A). The upgrade from nickel to gold plating on the 35581X enhances contact reliability and corrosion resistance.

Both parts share identical ECCN (EAR99) and HTSUS (8536.69.8000) classifications, and both maintain REACH Unaffected status. Selection of the 35581X eliminates obsolescence risk while maintaining full form, fit, and function compatibility with existing designs specified for the 3558-1.

Frequently Asked Questions (FAQ)

Q: Can the 35581X directly replace the 3558-1 in existing assemblies?

A: Yes. The 35581X provides direct mechanical and electrical compatibility. Both connectors share identical mating diameter (3.20mm ID, 9.00mm OD), contact count (2 conductors), mounting type (free hanging in-line), termination method (solder), and physical dimensions (0.640" mating depth, 0.203" cable opening).

Q: What are the key differences between these parts?

A: The primary differences are product status (3558-1 is obsolete; 35581X is active), contact plating (nickel versus gold), and documented electrical specifications. The 35581X provides operating temperature range (-40°C ~ 85°C), voltage rating (250VAC, 140VDC), and current rating (6 A), which are not specified for the 3558-1.

Q: Does the change from nickel to gold plating affect compatibility?

A: No. Gold plating is a material upgrade that improves contact reliability and corrosion resistance. It does not affect mechanical fit or electrical function in mono audio applications.

Q: Are there compliance differences between these parts?

A: Yes. The 35581X is ROHS3 compliant, while the 3558-1 is RoHS non-compliant. Both maintain identical REACH Unaffected and EAR99 ECCN status.

Q: What packaging options are available?

A: The 3558-1 packaging specification is not provided. The 35581X is available in bulk packaging.

Q: Are both parts from the same manufacturer?

A: Yes. Both the 3558-1 and 35581X are manufactured by Switchcraft Inc. and belong to the 3558 series.