Omron A3SJ-90G1-12SW Pushbutton Switch - Equivalent & Substitute Parts

Part Overview

The Omron A3SJ-90G1-12SW is a DPDT illuminated pushbutton switch designed for panel mount, snap-in installation. This component features a rectangular white button actuator with white LED illumination powered at 12 VAC/DC. The switch is rated for 100mA at 125V AC or 30V DC, with quick connect 0.110" (2.8mm) termination.

The A3SJ-90G1-12SW carries an obsolete product status. Identifying functionally equivalent active alternatives ensures design continuity and supply chain reliability for new production runs and maintenance applications.

Substiute Parts

A3SJ-90G1-12SW

Omron Automation and SafetyIn Stock: 1154A3SJ-90G1-12SW Datasheet

Current PartRFQ

A3SJ-90G1-12EW

Omron Automation and SafetyIn Stock: 946A3SJ-90G1-12EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3SJ-90G1-12SW is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: DPDT topology must be maintained
• Switch Function: On-Momentary operation required
• Electrical Ratings: 100mA current capacity, 125V AC / 30V DC voltage compliance
• Mechanical Interface: Panel mount snap-in installation with 22.40mm x 16.20mm rectangular cutout
• Actuator & Illumination: Rectangular button with white LED illumination
• Termination: Quick connect 0.110" (2.8mm) connectors
• Environmental Specifications: Operating temperature -10°C to 50°C, mechanical life 1,000,000 cycles, electrical life 100,000 cycles

The A3SJ-90G1-12EW meets all substitution criteria and represents the active product line equivalent within the Omron A3S series.

Parameter Comparison

Engineering Selection Recommendations

The A3SJ-90G1-12EW is the direct active equivalent for the obsolete A3SJ-90G1-12SW. Both components maintain identical electrical performance, mechanical interface, and environmental specifications within the Omron A3S pushbutton switch series.

The primary distinction is product status: the A3SJ-90G1-12EW is actively manufactured and supported, while the A3SJ-90G1-12SW is obsolete. For new designs, production builds, and long-term supply chain planning, the A3SJ-90G1-12EW is the appropriate selection.

The illumination voltage specification shows a minor notation difference (12 VAC/DC versus 12 VDC), reflecting the active product's DC-optimized design while maintaining backward compatibility with the original AC/DC rated version.

Frequently Asked Questions (FAQ)

Q: Can the A3SJ-90G1-12EW directly replace the A3SJ-90G1-12SW in existing installations?

A: Yes. Both components share identical panel cutout dimensions (22.40mm x 16.20mm), quick connect termination (0.110" / 2.8mm), electrical ratings (100mA, 125V AC / 30V DC), and mechanical specifications (1,000,000 cycle life). Physical and electrical compatibility is complete.

Q: What is the difference between 12 VAC/DC and 12 VDC illumination voltage specifications?

A: The A3SJ-90G1-12SW supports illumination across both AC and DC supplies at 12V nominal. The A3SJ-90G1-12EW is specified for 12 VDC operation. In applications using DC illumination supplies, both parts perform identically. In AC-only illumination circuits, the A3SJ-90G1-12SW specification provides explicit AC support; however, the A3SJ-90G1-12EW remains functionally compatible in such applications.

Q: Are there any mechanical or dimensional changes between these two models?

A: No. Panel mount snap-in installation, rectangular button actuator geometry, white LED illumination color, and all dimensional specifications remain unchanged. Direct mechanical substitution is possible without panel or enclosure modifications.

Q: Why is the A3SJ-90G1-12SW listed as obsolete?

A: Product obsolescence reflects Omron's manufacturing and support lifecycle decisions. The A3SJ-90G1-12EW represents the current active product line continuation within the A3S series, offering equivalent functionality with ongoing availability and technical support.

Q: What inventory considerations apply to these parts?

A: The A3SJ-90G1-12SW shows 1,053 pieces in stock (new original), while the A3SJ-90G1-12EW shows 893 pieces in stock (new original). For new procurement, the A3SJ-90G1-12EW is the recommended selection due to active product status and continued manufacturing support.