SL173M Equivalent & Substitute Parts

Part Overview

The SL173M is a 3-position circular connector receptacle with male pins manufactured by Switchcraft Inc. as part of the Slim-Line® SL17 series. This component is designed for panel mount applications with bulkhead front-side nut fastening and solder cup termination. The part is currently obsolete, making identification of suitable alternatives necessary for ongoing system maintenance and new design implementations where this connector type is required.

Substiute Parts

SL173M

Switchcraft Inc.In Stock: 1047SL173M Datasheet

Current PartRFQ

SL173MX

Switchcraft Inc.In Stock: 1216SL173MX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SL173MX qualifies as a direct substitute for the SL173M based on the following critical parameters:

• Identical connector type (Receptacle, Male Pins)
• Identical number of positions (3)
• Identical shell size and insert designation (SL-3M)
• Identical series classification (Slim-Line® SL17)
• Identical mounting configuration (Panel Mount, Bulkhead - Front Side Nut)
• Identical termination method (Solder Cup)
• Identical shell material and finish (Zinc Alloy, Nickel)
• Identical contact finish (Silver)
• Identical current rating (5A)
• Identical shielding specification (Unshielded)
• Identical flammability rating (UL94 V-0)

The SL173MX maintains full mechanical and electrical compatibility with the SL173M across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The SL173MX is the direct substitute for the obsolete SL173M. The primary distinction between these parts is product status and regulatory compliance. The SL173M is obsolete and RoHS non-compliant, while the SL173MX is an active product with ROHS3 compliance. Both parts maintain identical mechanical and electrical specifications across all functional parameters.

For new designs and ongoing applications, the SL173MX should be selected as it provides current product support and meets modern regulatory requirements while maintaining full compatibility with existing SL173M installations.

Frequently Asked Questions (FAQ)

Q: Can SL173MX be used as a direct replacement for SL173M?

A: Yes. The SL173MX is mechanically and electrically identical to the SL173M across all specified parameters including connector type, position count, shell size, mounting configuration, termination method, and current rating.

Q: What is the primary reason to transition from SL173M to SL173MX?

A: The SL173M is obsolete and RoHS non-compliant. The SL173MX is an active product with ROHS3 compliance, ensuring continued availability and regulatory alignment.

Q: Are there packaging differences between SL173M and SL173MX?

A: The SL173M is supplied in standard packaging, while the SL173MX is supplied in bulk packaging. This distinction does not affect component functionality or compatibility.

Q: Do both parts have the same current rating?

A: Yes. Both the SL173M and SL173MX are rated for 5A continuous current.

Q: Are the shell materials and finishes identical?

A: Yes. Both parts use zinc alloy shells with nickel finish and silver contact finish for mating surfaces.