SL404M Equivalent & Substitute Parts

Part Overview

The SL404M is a 4-position circular connector plug with male pins and solder cup termination, manufactured by Switchcraft Inc. as part of the Slim-Line® SL40 series. This connector is designed for audio, industrial, marine, and medical applications requiring shielded connections with a 5A current rating.

The SL404M is classified as obsolete. Locating active production alternatives is necessary to ensure supply chain continuity and access to current manufacturing stock for new designs or replacement applications.

Substiute Parts

SL404M

Switchcraft Inc.In Stock: 683SL404M Datasheet

Current PartRFQ

SL404MX

Switchcraft Inc.In Stock: 4919SL404MX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SL404MX qualifies as a direct substitute for the SL404M based on strict parameter equivalence. Both parts share identical electrical and mechanical specifications:

• Connector configuration: 4-position plug with male pins
• Shell size and insert designation: SL-4M
• Termination method: Solder cup
• Material composition: Copper alloy shell with nickel finish
• Contact finish: Silver mating surface
• Shielding: Shielded design
• Current capacity: 5A
• Cable opening diameter: 0.280" (7.10mm)
• Fastening: Threaded coupling nut
• Mechanical features: Cable clamp and strain relief

The primary distinction between these parts is product status and compliance certification. The SL404MX is in active production with ROHS3 compliance, whereas the SL404M is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The SL404MX is the appropriate selection for new designs and applications requiring the SL404M connector specification. Both parts are electrically and mechanically identical across all functional parameters.

The SL404MX offers two significant advantages:

1. Active production status ensures long-term supply availability and manufacturing consistency.
2. ROHS3 compliance satisfies regulatory requirements for products destined for markets with RoHS directives.

The SL404M remains available in limited stock (671 units) for legacy system maintenance or repair applications where RoHS compliance is not a requirement. However, the SL404MX should be specified for all new procurement to align with current manufacturing standards and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Are SL404M and SL404MX mechanically interchangeable?

A: Yes. Both connectors share identical shell size (SL-4M), pin configuration (4-position male), termination method (solder cup), and fastening mechanism (threaded coupling nut). They are direct mechanical substitutes.

Q: Are SL404M and SL404MX electrically interchangeable?

A: Yes. Both connectors have identical current rating (5A), contact finish (silver), shielding configuration, and material composition. They are direct electrical substitutes.

Q: What is the difference between SL404M and SL404MX?

A: The SL404MX is the active production equivalent of the obsolete SL404M. The SL404MX is ROHS3 compliant, while the SL404M is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Can I use SL404MX in place of SL404M in existing designs?

A: Yes. The SL404MX is a direct substitute with no design modifications required. Existing PCB layouts, cable assemblies, and mechanical mounting are fully compatible.

Q: What packaging options are available?

A: The SL404M is available in standard packaging. The SL404MX is supplied in bulk packaging. Confirm packaging requirements with your procurement specification.

Q: Are there any compliance differences I should consider?

A: The SL404MX meets ROHS3 compliance standards, making it suitable for applications subject to RoHS directives. The SL404M is RoHS non-compliant and should be reserved for legacy applications where RoHS compliance is not mandated.