Omron A3SJ-90E1-24SW Equivalent & Substitute Parts

Part Overview

The Omron A3SJ-90E1-24SW is an illuminated pushbutton switch with SPDT circuit configuration, designed for panel-mount snap-in installation. This component features a white rectangular button actuator with white LED illumination powered at 24 VAC/DC. The part is classified as obsolete, making identification of active equivalent models essential for ongoing procurement and system maintenance.

Substiute Parts

A3SJ-90E1-24SW

Omron Automation and SafetyIn Stock: 1101A3SJ-90E1-24SW Datasheet

Current PartRFQ

A3SJ-90E1-24EW

Omron Automation and SafetyIn Stock: 1026A3SJ-90E1-24EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3SJ-90E1-24SW is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPDT)
• Switch function (On-Mom momentary operation)
• Current and voltage ratings (100mA AC/DC, 125V AC, 30V DC)
• Mounting type and panel cutout dimensions (Panel Mount Snap-In, 22.40mm x 16.20mm)
• Actuator type and color (Rectangular button, white)
• Illumination specifications (LED, white, 24V nominal)
• Termination style (Quick Connect 0.110" / 2.8mm)
• Operating temperature range (-10°C ~ 50°C)
• Mechanical and electrical life ratings (1,000,000 and 100,000 cycles respectively)

The primary distinction between the main part and its substitute relates to illumination voltage specification and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The A3SJ-90E1-24EW is the active equivalent for the obsolete A3SJ-90E1-24SW. Both components maintain identical electrical and mechanical specifications across all critical parameters. The substitute part is recommended for new designs and ongoing procurement due to its active product status, ensuring long-term availability and manufacturer support.

The illumination voltage specification differs between the two parts: the main part specifies 24 VAC/DC while the substitute specifies 24 VDC. This distinction should be evaluated against the specific power supply configuration in the target application to ensure compatibility.

Frequently Asked Questions (FAQ)

Q: Can the A3SJ-90E1-24EW directly replace the A3SJ-90E1-24SW in existing installations?

A: Yes. Both parts share identical panel cutout dimensions (22.40mm x 16.20mm), mounting type (snap-in), termination style (quick connect 0.110"), and electrical ratings. Physical and electrical compatibility is maintained.

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

A: The main part specifies 24 VAC/DC illumination voltage, while the substitute specifies 24 VDC. If the application power supply provides AC voltage exclusively, the substitute part's DC-only specification should be evaluated against the actual circuit design.

Q: Why is the A3SJ-90E1-24SW classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The A3SJ-90E1-24EW represents the active continuation within the A3S series, maintaining functional and dimensional equivalence.

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

A: No. Both parts specify 1,000,000 mechanical cycles and 100,000 electrical cycles, indicating equivalent operational durability.

Q: What does the panel cutout dimension specification mean for installation?

A: The rectangular cutout of 22.40mm x 16.20mm defines the opening required in the panel for snap-in mounting. Both parts use identical dimensions, ensuring interchangeability in existing panel installations.