M2012S2A2W40 Equivalent & Substitute Parts

Part Overview

The M2012S2A2W40 is a toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 4A at 30V DC. This through-hole, right-angle mounted switch features epoxy sealed terminals and a standard round brass actuator with chrome plating. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning.

Substiute Parts

M2012S2A2W40

NKK SwitchesIn Stock: 1245M2012S2A2W40 Datasheet

Current PartRFQ

A123M1D9AV2Q

ElectroswitchIn Stock: 1168A123M1D9AV2Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M2012S2A2W40 is determined by strict alignment of the following critical parameters:

• Circuit configuration (SPDT required)
• Switch function (On-On operation)
• Current rating: minimum 6A AC capability
• Voltage rating: minimum 125V AC and 30V DC
• Mounting type: Through hole, right angle, vertical orientation
• Termination style: PC pin configuration
• Actuator type: Standard round
• Environmental compliance: RoHS compliance status

The substitute part A123M1D9AV2Q meets these criteria with equivalent electrical ratings and mechanical compatibility, though with variations in actuator length, operating temperature range, and electrical life cycle rating.

Parameter Comparison

Engineering Selection Recommendations

The A123M1D9AV2Q from Electroswitch qualifies as a functional substitute for the M2012S2A2W40. Both components share identical circuit configuration, switch function, and AC voltage ratings. The substitute provides superior DC current capability (6A versus 4A) and extended electrical life (60,000 cycles versus 25,000 cycles). The substitute maintains active product status, ensuring ongoing availability and supply chain continuity.

Mechanical compatibility is confirmed through matching mounting type, termination style, and actuator configuration. The 1.78mm reduction in actuator length (5.08mm versus 6.86mm) requires verification against panel cutout and actuator engagement specifications in the target application. The extended operating temperature range (-30°C to 90°C versus -30°C to 85°C) provides additional thermal margin.

Both components maintain equivalent RoHS compliance status, satisfying regulatory requirements for new designs and legacy system replacements.

Frequently Asked Questions (FAQ)

Q: Can the A123M1D9AV2Q directly replace the M2012S2A2W40 in existing designs?

A: Electrical compatibility is confirmed across all critical parameters. Mechanical fit must be verified, specifically the 1.78mm difference in actuator length relative to panel cutout dimensions and actuator engagement depth in the target application.

Q: What are the key differences between these two parts?

A: The primary differences are actuator length (6.86mm versus 5.08mm), DC current rating (4A versus 6A), electrical life rating (25,000 versus 60,000 cycles), and product status (obsolete versus active). AC voltage and circuit configuration remain identical.

Q: Does the substitute part meet the same compliance requirements?

A: Both components are RoHS compliant. The M2012S2A2W40 carries RoHS3 certification, while the A123M1D9AV2Q carries RoHS certification. Both satisfy regulatory compliance for electronic component applications.

Q: What packaging considerations apply to these parts?

A: The M2012S2A2W40 is supplied in tray packaging, while the A123M1D9AV2Q is supplied in bulk packaging. Procurement and handling procedures may differ based on packaging format.

Q: Is the substitute part suitable for high-cycle applications?

A: The A123M1D9AV2Q demonstrates superior electrical life rating at 60,000 cycles compared to the original part's 25,000 cycles, making it suitable for applications requiring extended operational life.