M2018ES1G30 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The NKK Switches M2018ES1G30 is a through-hole, right-angle toggle switch with SPDT (Single Pole Double Throw) configuration rated for 0.4VA at 28V AC/DC. The switch features a momentary-off-momentary (Mom-Off-Mom) function with epoxy sealed terminals and operates across -30°C to 85°C. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

M2018ES1G30

NKK SwitchesIn Stock: 1314M2018ES1G30 Datasheet

Current PartRFQ

7105P3CWABE

C&KIn Stock: 12417105P3CWABE Datasheet

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7105P3Y1ABE

C&KIn Stock: 9777105P3Y1ABE Datasheet

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7105P3YA4BE

C&KIn Stock: 12007105P3YA4BE Datasheet

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7105P3YABE

C&KIn Stock: 10687105P3YABE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the M2018ES1G30 is based on the following critical parameters that must remain consistent:

Electrical Compatibility:

• Circuit configuration: SPDT
• Switch function: Mom-Off-Mom
• Current rating: 0.4VA (AC/DC)
• Voltage rating: Substitute parts rated for 20V AC/DC are acceptable as they operate within the 28V requirement

Mechanical Compatibility:

• Termination style: PC Pin (maintained across all substitutes)
• Actuator type: Flat Anti-Rotation (functionally equivalent to Flatted)
• Actuator length: 11.43mm (within tolerance of 11.40mm)
• Bushing thread: 1/4-40 (maintained)
• Operating temperature: -30°C ~ 85°C (maintained)

Mounting Consideration: The M2018ES1G30 uses through-hole, right-angle mounting. All substitute parts from C&K use panel mount, right-angle configuration. This represents a functional mounting change that requires design verification for mechanical fit and PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

All four C&K substitute parts (7105P3CWABE, 7105P3Y1ABE, 7105P3YA4BE, 7105P3YABE) are active products with ROHS3 compliance and REACH affected status. These parts maintain electrical equivalence to the M2018ES1G30 across circuit configuration, switch function, current rating, and operating temperature range.

The primary design consideration is the transition from through-hole mounting to panel mount configuration. This change requires mechanical redesign of the mounting interface and PCB layout. The panel cutout diameter reduction from 6.50mm to 6.35mm must be accommodated in panel design.

The voltage rating reduction from 28V to 20V on substitute parts is acceptable for applications operating at or below 20V. Applications requiring the full 28V rating cannot use these substitutes.

The electrical life specification decreases from 50,000 cycles to 40,000 cycles on all C&K substitutes. Applications with cycle count requirements exceeding 40,000 must evaluate this parameter against design life expectations.

The 7105P3CWABE variant offers IP67 ingress protection, providing enhanced environmental sealing compared to the original part and other C&K variants.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7105P3 series parts directly replace the NKK M2018ES1G30 without design changes?

A: No. While electrical specifications are compatible, the mounting type changes from through-hole to panel mount. This requires mechanical redesign of the mounting interface and PCB layout modifications.

Q: Are the 20V rated C&K substitutes suitable for 28V applications?

A: No. The substitute parts are rated for 20V AC/DC maximum. Applications requiring 28V operation cannot use these parts.

Q: What is the difference between the four C&K substitute part numbers?

A: All four parts (7105P3CWABE, 7105P3Y1ABE, 7105P3YA4BE, 7105P3YABE) share identical electrical and mechanical specifications. The 7105P3CWABE variant includes IP67 ingress protection. The part number variations reflect internal C&K configuration codes that do not affect functional compatibility.

Q: Does the reduction in electrical life from 50,000 to 40,000 cycles affect suitability?

A: This depends on application requirements. Applications with cycle count specifications below 40,000 cycles are unaffected. Applications exceeding 40,000 cycles must evaluate whether the reduced life meets design requirements.

Q: Are all substitute parts RoHS and REACH compliant?

A: All substitute parts are ROHS3 compliant. All C&K parts are REACH affected. The original NKK part is REACH unaffected. Compliance requirements must be verified against project specifications.

Q: What is the panel cutout dimension difference, and does it matter?

A: The original part requires a 6.50mm diameter circular cutout; substitutes require 6.35mm. This 0.15mm reduction is a minor difference but must be accommodated in panel design. Existing panels designed for the M2018ES1G30 may require modification.