Omron A3SA-90A1-05SW Equivalent & Substitute Parts

Part Overview

The Omron A3SA-90A1-05SW is a pushbutton switch with SPDT circuit configuration, designed for illuminated panel mount applications with snap-in installation. This component features a white square button actuator with white LED illumination at 5 VDC nominal voltage. The part is classified as obsolete, making identification of active equivalent models essential for ongoing production and maintenance applications.

Substiute Parts

A3SA-90A1-05SW

Omron Automation and SafetyIn Stock: 1156A3SA-90A1-05SW Datasheet

Current PartRFQ

A3SA-90A1-05EW

Omron Automation and SafetyIn Stock: 870A3SA-90A1-05EW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete A3SA-90A1-05SW is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for circuit configuration (SPDT), switch function (On-Mom), current and voltage ratings, actuator geometry and color, illumination characteristics, termination style, panel cutout dimensions, and operational life ratings. The primary distinction between the main part and its substitute is product status: the main part is obsolete, while the substitute remains in active production.

Parameter Comparison

Engineering Selection Recommendations

The A3SA-90A1-05EW is the direct equivalent for the obsolete A3SA-90A1-05SW. Both components are manufactured by Omron Automation and Safety within the A3S series and maintain identical electrical and mechanical specifications. The substitute part is currently in active production status, ensuring availability for new designs and replacement applications. Selection of the A3SA-90A1-05EW eliminates obsolescence risk while preserving full functional and physical compatibility with existing circuit designs and panel installations.

Frequently Asked Questions (FAQ)

Q: Can the A3SA-90A1-05EW be used as a direct replacement for the A3SA-90A1-05SW?

A: Yes. Both parts share identical electrical ratings (3A AC / 2A DC, 125V AC / 30V DC), circuit configuration (SPDT), switch function (On-Mom), actuator geometry (square button, white), illumination characteristics (LED, white, 5 VDC), termination style (Quick Connect 0.110"), and panel cutout dimensions (16.20mm x 16.20mm). No circuit modifications or panel rework are required.

Q: What is the primary difference between these two part numbers?

A: The A3SA-90A1-05SW is classified as obsolete, while the A3SA-90A1-05EW is in active production. All functional and physical parameters remain identical.

Q: Are the panel mounting dimensions identical?

A: Yes. Both parts require a square panel cutout of 16.20mm x 16.20mm and use snap-in mounting. No panel modification is necessary for substitution.

Q: Do the electrical ratings match exactly?

A: Yes. Both parts are rated for 3A AC at 125V and 2A DC at 30V with SPDT circuit configuration and On-Mom switch function. Mechanical life is 1,000,000 cycles and electrical life is 100,000 cycles for both parts.

Q: Is the illumination voltage the same?

A: Yes. Both parts use white LED illumination at 5 VDC nominal voltage.