Omron A3SA-90A1-12SW Equivalent & Substitute Parts

Part Overview

The Omron A3SA-90A1-12SW 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 compatible substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

A3SA-90A1-12SW

Omron Automation and SafetyIn Stock: 1059A3SA-90A1-12SW Datasheet

Current PartRFQ

A3SA-90A1-12EW

Omron Automation and SafetyIn Stock: 1161A3SA-90A1-12EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the A3SA-90A1-12SW is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPDT)
• Switch function (On-Mom)
• 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 square)
• Actuator type and color (Square button, White)
• Illumination specifications (LED, White, 12V nominal)
• Termination style (Quick Connect - 0.110" / 2.8mm)
• Operating temperature range (-10°C to 50°C)
• Mechanical and electrical life ratings (1,000,000 and 100,000 cycles respectively)

The primary distinction between the main part and substitute candidates lies in illumination voltage specification and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The Omron A3SA-90A1-12EW is a direct functional equivalent to the A3SA-90A1-12SW. Both components share identical electrical ratings, mechanical specifications, and physical dimensions. The primary distinction is product status: the A3SA-90A1-12SW is classified as obsolete, while the A3SA-90A1-12EW maintains active status with current manufacturing support.

The illumination voltage specification differs between the two parts: the main part supports 12 VAC/DC operation, while the substitute supports 12 VDC operation. This distinction is significant for applications requiring AC illumination supply. In DC-only illumination circuits, the A3SA-90A1-12EW provides equivalent performance with the advantage of active product status and ongoing availability.

Frequently Asked Questions (FAQ)

Q: What is the primary reason for substituting the A3SA-90A1-12SW?

A: The A3SA-90A1-12SW is classified as obsolete. The A3SA-90A1-12EW provides equivalent electrical and mechanical functionality with active product status and current manufacturing availability.

Q: Are the panel cutout dimensions identical between the main part and substitute?

A: Yes. Both the A3SA-90A1-12SW and A3SA-90A1-12EW require a square panel cutout of 16.20mm x 16.20mm, enabling direct mechanical interchange in existing panel installations.

Q: What is the difference in illumination voltage specification?

A: The A3SA-90A1-12SW supports 12 VAC/DC illumination, while the A3SA-90A1-12EW supports 12 VDC illumination. For applications using DC illumination supply, both parts are functionally equivalent. For applications requiring AC illumination supply, the main part specification must be retained or the circuit modified to accommodate DC-only operation.

Q: Are the electrical ratings identical?

A: Yes. Both parts maintain identical current ratings (3A AC / 2A DC) and voltage ratings (125V AC / 30V DC), ensuring equivalent performance in switching applications.

Q: Is the termination style compatible?

A: Yes. Both parts use Quick Connect termination with 0.110" (2.8mm) connectors, enabling direct terminal interchange.

Q: What is the mechanical life expectancy?

A: Both the A3SA-90A1-12SW and A3SA-90A1-12EW are rated for 1,000,000 mechanical cycles, with electrical life rated at 100,000 cycles.