Omron A3SJ-90D1-24SW Equivalent & Substitute Parts

Part Overview

The Omron A3SJ-90D1-24SW is a DPDT pushbutton switch with 3A/125V AC rating, designed for illuminated panel mount applications with snap-in installation. This component features a white rectangular button actuator with amber LED illumination at 24 VAC/DC nominal voltage. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

A3SJ-90D1-24SW

Omron Automation and SafetyIn Stock: 1137A3SJ-90D1-24SW Datasheet

Current PartRFQ

A3SJ-90D1-24EW

Omron Automation and SafetyIn Stock: 1207A3SJ-90D1-24EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3SJ-90D1-24SW is determined by strict equivalence across the following critical parameters:

Circuit configuration (DPDT), switch function (On-On), current ratings (3A AC / 2A DC), voltage ratings (125V AC / 30V DC), mounting type (Panel Mount, Snap-In), termination style (Quick Connect - 0.110"), and panel cutout dimensions (22.40mm x 16.20mm). These parameters define the electrical and mechanical interface requirements for direct replacement.

Secondary parameters including illumination type (LED), illumination voltage (24V nominal), operating temperature range (-10°C to 50°C), and mechanical/electrical life (100,000 cycles) must also align to ensure functional equivalence in illuminated switch applications.

The A3SJ-90D1-24EW qualifies as a manufacturer-recommended substitute based on full alignment with all critical and secondary parameters. The primary distinction is the illumination color (white LED versus amber LED) and illumination voltage specification (24 VDC versus 24 VAC/DC), which represent functional variations within the same product family rather than compatibility limitations.

Parameter Comparison

Engineering Selection Recommendations

The A3SJ-90D1-24EW is the manufacturer-recommended substitute for the obsolete A3SJ-90D1-24SW. Both components maintain identical electrical specifications, mechanical interfaces, and operational characteristics across all critical parameters. The A3SJ-90D1-24EW carries active product status, ensuring ongoing availability and manufacturer support.

The substitution is appropriate for applications requiring direct replacement without circuit or panel modifications. The illumination color difference (white versus amber) and illumination voltage specification (24 VDC versus 24 VAC/DC) should be evaluated against specific application requirements, particularly in systems where indicator color coding or AC/DC power source compatibility is functionally significant.

Frequently Asked Questions (FAQ)

Q: Can the A3SJ-90D1-24EW directly replace the A3SJ-90D1-24SW without panel modifications?

A: Yes. Both components share identical panel cutout dimensions (22.40mm x 16.20mm), mounting type (Panel Mount, Snap-In), and termination style (Quick Connect - 0.110"). No mechanical or electrical interface changes are required.

Q: What is the difference between the illumination specifications of these two parts?

A: The A3SJ-90D1-24SW features amber LED illumination rated at 24 VAC/DC. The A3SJ-90D1-24EW features white LED illumination rated at 24 VDC. Both operate at 24V nominal voltage; the AC/DC specification difference reflects the power source compatibility of the illumination circuit.

Q: Are the electrical ratings identical between these components?

A: Yes. Both parts are rated for 3A at 125V AC and 2A at 30V DC. Circuit configuration (DPDT), switch function (On-On), and operational life (100,000 mechanical and electrical cycles) are identical.

Q: Why is the A3SJ-90D1-24SW classified as obsolete?

A: Product obsolescence reflects manufacturer discontinuation. The A3SJ-90D1-24EW represents the active product line continuation within the A3S series, offering equivalent functionality with current manufacturing support.

Q: What operating conditions apply to both components?

A: Both components operate within the temperature range of -10°C to 50°C and maintain 100,000 cycle mechanical and electrical life ratings under specified electrical loads.