Omron A3SA-90B1-12SW Equivalent & Substitute Parts

Part Overview

The Omron A3SA-90B1-12SW is an illuminated pushbutton switch with SPDT circuit configuration, designed for panel mount 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 ongoing production and maintenance applications.

Substiute Parts

A3SA-90B1-12SW

Omron Automation and SafetyIn Stock: 1138A3SA-90B1-12SW Datasheet

Current PartRFQ

A3SA-90B1-12EW

Omron Automation and SafetyIn Stock: 937A3SA-90B1-12EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3SA-90B1-12SW is determined by strict equivalence across the following critical parameters:

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

The primary distinction between the main part and its substitute relates to illumination voltage specification and product status transition from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The A3SA-90B1-12EW serves as the direct active equivalent to the obsolete A3SA-90B1-12SW. Both components maintain identical electrical and mechanical specifications across all critical parameters. The transition from obsolete to active product status makes the A3SA-90B1-12EW the appropriate selection for new designs and ongoing production requirements.

The illumination voltage specification difference (12 VAC/DC versus 12 VDC) reflects a refinement in the active model's documentation. Both specifications accommodate 12 VDC operation, ensuring functional compatibility in applications utilizing DC illumination power supplies.

Frequently Asked Questions (FAQ)

Q: Can the A3SA-90B1-12EW directly replace the A3SA-90B1-12SW in existing installations?

A: Yes. Both components share identical electrical ratings, circuit configuration, mounting dimensions, and mechanical specifications. The panel cutout dimensions (16.20mm x 16.20mm) and quick connect termination style are identical, enabling direct mechanical and electrical substitution.

Q: What is the significance of the illumination voltage specification change from 12 VAC/DC to 12 VDC?

A: The A3SA-90B1-12EW specification clarifies that illumination operates at 12 VDC. Applications using 12 VAC illumination power should verify compatibility with the active model's DC-specified illumination circuit. Both components function with 12 VDC illumination supplies.

Q: Are there any differences in mechanical life or electrical performance between these components?

A: No. Both components specify 100,000 mechanical cycles and 100,000 electrical cycles. Current ratings (3A AC / 2A DC) and voltage ratings (125V AC / 30V DC) are identical.

Q: Why is the A3SA-90B1-12SW classified as obsolete?

A: The A3SA-90B1-12SW has been superseded by the A3SA-90B1-12EW within Omron's product portfolio. The active equivalent maintains all functional and mechanical specifications while reflecting current manufacturing and documentation standards.

Q: Are there any panel cutout or mounting modifications required when transitioning from the A3SA-90B1-12SW to the A3SA-90B1-12EW?

A: No modifications are required. Both components utilize identical panel mount snap-in installation with a 16.20mm x 16.20mm square cutout. The quick connect termination style (0.110" / 2.8mm) is also identical.