M2018ES1G40 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The M2018ES1G40 is a toggle switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuitry with a momentary-off-momentary (Mom-Off-Mom) switch function. This panel-mount component is rated for 0.4VA at 28V AC/DC with a flatted brass actuator and epoxy-sealed PC pin termination. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and component sourcing.

Substiute Parts

M2018ES1G40

NKK SwitchesIn Stock: 845M2018ES1G40 Datasheet

Current PartRFQ

MN18ES1G40

NKK SwitchesIn Stock: 1204MN18ES1G40 Datasheet

MFR RecommendedRFQ

7105P3Y1AV2BE

C&KIn Stock: 12437105P3Y1AV2BE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M2018ES1G40 is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Current rating (0.4VA AC/DC)
• Voltage rating (minimum 28V AC/DC)
• Mounting type (Panel Mount, Right Angle, Vertical)
• Termination style (PC Pin)
• Panel cutout dimensions (Circular - 6.50mm Dia)
• Bushing thread (1/4-40)
• Operating temperature range (-30°C ~ 85°C minimum)

Identified Substitutes:

1. MN18ES1G40 (NKK Switches) - Manufacturer-recommended equivalent with identical electrical and mechanical specifications. Active product status ensures ongoing availability.

2. 7105P3Y1AV2BE (C&K) - Similar substitute with compatible SPDT Mom-Off-Mom configuration. Voltage rating of 20V DC is below the 28V requirement of the original part, limiting direct substitution to applications operating at 20V or lower. Electrical life of 40,000 cycles is lower than the original 50,000 cycles.

Parameter Comparison

Engineering Selection Recommendations

MN18ES1G40 (Recommended Primary Substitute): This NKK Switches part is the manufacturer-recommended equivalent and maintains active product status. Selection of this substitute is supported by its identical electrical specifications and mechanical compatibility with the M2018ES1G40. The active status ensures long-term availability and supply chain continuity.

7105P3Y1AV2BE (Conditional Substitute): This C&K component is suitable only for applications where the operating voltage does not exceed 20V DC/AC. The 20V voltage rating is below the original 28V specification, creating a voltage derating condition. The reduced electrical life (40,000 cycles versus 50,000 cycles) must be evaluated against application duty cycle requirements. The panel cutout dimension of 6.35mm is slightly smaller than the original 6.50mm, requiring verification of panel mounting compatibility. This substitute is appropriate only when voltage and cycle-life requirements can be accommodated within these reduced parameters.

Frequently Asked Questions (FAQ)

Q: Can the MN18ES1G40 be used as a direct replacement for the M2018ES1G40? A: Yes. The MN18ES1G40 is the manufacturer-recommended equivalent with identical electrical and mechanical specifications. Both parts are manufactured by NKK Switches and share the same SPDT Mom-Off-Mom configuration, 0.4VA rating, 28V voltage rating, and panel-mount specifications.

Q: What are the voltage limitations of the 7105P3Y1AV2BE substitute? A: The 7105P3Y1AV2BE is rated for 20V AC/DC maximum, which is 8V below the original M2018ES1G40 specification of 28V. This part is suitable only for circuits operating at 20V or lower. Use in 28V circuits would exceed the component's voltage rating.

Q: How do the panel cutout dimensions differ between the main part and the C&K substitute? A: The M2018ES1G40 requires a 6.50mm diameter circular cutout, while the 7105P3Y1AV2BE requires a 6.35mm diameter cutout. This 0.15mm difference is minor but must be verified during panel integration to ensure proper fit and sealing.

Q: What is the difference in electrical life between these parts? A: The M2018ES1G40 is rated for 50,000 electrical cycles, while the 7105P3Y1AV2BE is rated for 40,000 cycles. Applications requiring high-cycle operation should account for this 20% reduction in rated life when selecting the C&K substitute.

Q: Why is the M2018ES1G40 marked as obsolete? A: The M2018ES1G40 is classified as obsolete by the manufacturer. The MN18ES1G40 serves as the active replacement, ensuring continued availability and support for new designs and ongoing maintenance applications.

Q: Are both substitute parts RoHS3 compliant? A: Yes. Both the MN18ES1G40 and 7105P3Y1AV2BE are ROHS3 compliant, matching the environmental compliance status of the original M2018ES1G40.