Omron A3SA-90D1-12SW Equivalent & Substitute Parts

Part Overview

The Omron A3SA-90D1-12SW is a pushbutton switch with DPDT circuit configuration, designed for illuminated panel mount applications with snap-in installation. This component features a white square button actuator with white LED illumination powered at 12 VAC/DC. The part is classified as obsolete, making identification of active equivalent models essential for procurement and system continuity.

Substiute Parts

A3SA-90D1-12SW

Omron Automation and SafetyIn Stock: 741A3SA-90D1-12SW Datasheet

Current PartRFQ

A3SA-90D1-12EW

Omron Automation and SafetyIn Stock: 871A3SA-90D1-12EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3SA-90D1-12SW is determined by strict equivalence across the following critical parameters:

• Circuit configuration (DPDT)
• Switch function (On-On)
• Current and voltage ratings (3A AC / 2A DC; 125V AC / 30V DC)
• Mounting type (Panel Mount, Snap-In)
• Actuator type and color (Square Button, White)
• Illumination specification (LED, White, 12V)
• Termination style (Quick Connect - 0.110")
• Panel cutout dimensions (16.20mm x 16.20mm square)
• Operating temperature range (-10°C ~ 50°C)
• Mechanical and electrical life (100,000 cycles each)
• Ingress protection rating (IP00)

Only parts matching all these parameters across the A3S series are classified as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The A3SA-90D1-12EW is the direct active equivalent for the obsolete A3SA-90D1-12SW. Both components are members of the Omron A3S series and maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the A3SA-90D1-12EW is currently active in the Omron product line, ensuring ongoing availability and supply chain continuity.

The illumination voltage specification differs in notation only: the main part specifies 12 VAC/DC while the substitute specifies 12 VDC. This represents a functional refinement rather than a technical change, as the substitute operates on DC supply exclusively, which is compatible with the original AC/DC dual-voltage design intent.

Frequently Asked Questions (FAQ)

Q: Can the A3SA-90D1-12EW directly replace the A3SA-90D1-12SW in existing installations?

A: Yes. Both components share identical circuit configuration (DPDT), current ratings (3A AC / 2A DC), voltage ratings (125V AC / 30V DC), mounting specifications (Panel Mount, Snap-In), panel cutout dimensions (16.20mm x 16.20mm square), and operational life ratings (100,000 cycles mechanical and electrical). Physical and electrical compatibility is complete.

Q: What is the significance of the illumination voltage difference between the two parts?

A: The A3SA-90D1-12SW supports 12 VAC/DC illumination, while the A3SA-90D1-12EW supports 12 VDC illumination. The substitute operates on DC supply only. If your application requires AC illumination capability, this difference must be evaluated against your specific power supply configuration.

Q: Are there any mechanical differences between these components?

A: No. Both parts feature identical mounting type (Panel Mount, Snap-In), actuator type (Square Button), actuator color (White), panel cutout dimensions (16.20mm x 16.20mm square), and termination style (Quick Connect - 0.110").

Q: Why is the A3SA-90D1-12SW classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The A3SA-90D1-12EW represents the active continuation within the A3S series and is the recommended selection for new designs and replacement procurement.

Q: Are there any certifications or compliance differences between these parts?

A: Both components maintain identical ingress protection rating (IP00) and operating temperature range (-10°C ~ 50°C). No additional compliance or certification data is provided in the component specifications.