M2018EA2A13 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The M2018EA2A13 is an NKK Switches toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 3A at 30V DC. This through-hole mounted component features a momentary-off-momentary switch function with a flatted brass actuator and epoxy sealed terminals. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

M2018EA2A13

NKK SwitchesIn Stock: 1168M2018EA2A13 Datasheet

Current PartRFQ

7105P3D9V3GE

C&KIn Stock: 10157105P3D9V3GE Datasheet

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7105P3D9V4QE

C&KIn Stock: 9367105P3D9V4QE Datasheet

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7105P3D9V9RE

C&KIn Stock: 8537105P3D9V9RE Datasheet

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A127S1D9V31B

ElectroswitchIn Stock: 837A127S1D9V31B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M2018EA2A13 is determined by the following critical parameters:

• Circuit configuration must be SPDT
• Switch function must be Mom-Off-Mom
• Mounting type must be Through Hole
• Termination style must be PC Pin
• Current and voltage ratings must meet or exceed the original specification
• Operating temperature range must encompass the original range
• Actuator length should match or be compatible with panel cutout requirements

The substitute parts listed below satisfy these core electrical and mechanical criteria. Variations in actuator type, electrical life, and manufacturer-specific features are noted but do not disqualify substitution when electrical parameters are compatible.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (C&K 7105P3 Series):

The C&K parts 7105P3D9V3GE, 7105P3D9V4QE, and 7105P3D9V9RE are active products with ROHS3 compliance and extended electrical life (40,000 cycles versus 25,000 cycles). These parts maintain the same SPDT Mom-Off-Mom configuration and through-hole PC pin termination. The 7105P3D9V3GE and 7105P3D9V9RE both feature the matching 13.21mm actuator length. The 7105P3D9V4QE offers an 11.43mm actuator length and tray packaging as an alternative. All three C&K substitutes operate within the -30°C to 85°C temperature range and are rated for 5A AC/DC at 120V AC and 28V DC, which is compatible with the original specification for most applications.

Secondary Substitute (Electroswitch A127S1D9V31B):

The Electroswitch A127S1D9V31B maintains SPDT Mom-Off-Mom configuration and through-hole PC pin termination with RoHS compliance. This part is rated for 0.5VA at 28V AC/DC and features the highest electrical life rating (60,000 cycles). The 10.41mm actuator length and standard round actuator type differ from the original. This substitute is suitable only for low-power applications where the 0.5VA rating is sufficient.

Compliance Considerations:

All substitute parts maintain RoHS compliance. The C&K parts carry ROHS3 certification matching the original. REACH status varies: the C&K 7105P3D9V3GE and 7105P3D9V9RE are REACH Affected, while 7105P3D9V4QE is REACH Unaffected. The Electroswitch part has undefined REACH status.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7105P3D9V4QE substitute for the M2018EA2A13 despite the different actuator length?

A: The 7105P3D9V4QE features an 11.43mm actuator length compared to the original 13.21mm. Substitution is possible if the panel cutout and mechanical envelope accommodate the shorter actuator. Verify panel mounting geometry before selection.

Q: What is the difference between the three C&K 7105P3 variants?

A: The 7105P3D9V3GE and 7105P3D9V9RE are electrically identical with 13.21mm actuators and differ only in packaging (bulk) and REACH status. The 7105P3D9V4QE offers tray packaging and a shorter 11.43mm actuator. All three share the same 5A AC/DC rating and 40,000-cycle electrical life.

Q: Is the Electroswitch A127S1D9V31B suitable as a direct replacement?

A: The A127S1D9V31B maintains the same circuit configuration and switch function but is rated for only 0.5VA at 28V. This part is suitable only for low-power signal switching applications. It is not recommended for applications requiring the original 6A AC or 3A DC current capacity.

Q: Are all substitute parts ROHS3 compliant?

A: The C&K 7105P3 series parts are ROHS3 compliant. The Electroswitch A127S1D9V31B carries RoHS compliance but not specifically ROHS3 certification. Verify compliance requirements for your application.

Q: What is the impact of higher electrical life ratings on part selection?

A: The substitute parts offer extended electrical life (40,000 to 60,000 cycles) compared to the original 25,000 cycles. This provides improved reliability and longer service life in cyclic switching applications. Higher electrical life does not affect electrical compatibility but may reduce replacement frequency.