NKK Switches M2018E2S1W03 Equivalent & Substitute Parts

Part Overview

The NKK Switches M2018E2S1W03 is a toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 3A at 30V DC. This panel mount switch features a flatted actuator design with epoxy sealed terminals and is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements.

Substiute Parts

M2018E2S1W03

NKK SwitchesIn Stock: 1935M2018E2S1W03 Datasheet

Current PartRFQ

MN18E2S1W03

NKK SwitchesIn Stock: 899MN18E2S1W03 Datasheet

MFR RecommendedRFQ

3-1825137-7

TE Connectivity ALCOSWITCH SwitchesIn Stock: 10313-1825137-7 Datasheet

SimilarRFQ

7105MHCGE

C&KIn Stock: 9157105MHCGE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M2018E2S1W03 is determined by the following critical parameters:

• Circuit configuration must be SPDT
• Switch function must be Mom-Off-Mom
• Mounting type must be Panel Mount
• Termination style must be PC Pin
• Bushing thread must be 1/4-40
• Operating temperature range must encompass -30°C to 85°C
• RoHS3 compliance required

The substitute parts identified meet these core requirements. However, variations exist in current ratings, voltage ratings, actuator design, and electrical life specifications. These variations must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

MN18E2S1W03 (NKK Switches) is the manufacturer-recommended equivalent. As an active product from the original manufacturer, this part maintains design continuity and is ROHS3 compliant. This option is preferred for direct replacement applications where the original design parameters are maintained.

3-1825137-7 (TE Connectivity ALCOSWITCH Switches) is an active substitute from the Gemini A series. This part meets core substitution criteria with matching circuit configuration, switch function, mounting type, and termination style. Current ratings are reduced to 5A (AC/DC) and voltage ratings are reduced to 120V AC and 28V DC. Electrical life is specified at 6,000 cycles. This part is suitable for applications where the reduced electrical life and current/voltage ratings are acceptable.

7105MHCGE (C&K) is an active substitute from the 7000 series. This part meets core substitution criteria and offers the highest electrical life specification at 40,000 cycles. Current and voltage ratings match the TE Connectivity option at 5A (AC/DC), 120V AC, and 28V DC. Packaging is supplied in tray format rather than bulk. This part is suitable for high-cycle applications where extended electrical life is required.

All three options are ROHS3 compliant and operate within the -30°C to 85°C temperature range. Selection should be based on application-specific requirements for current capacity, voltage rating, electrical life, and packaging format.

Frequently Asked Questions (FAQ)

Q: Can MN18E2S1W03 be used as a direct replacement for M2018E2S1W03?

A: MN18E2S1W03 is the manufacturer-recommended equivalent from NKK Switches. Both parts share the same base product number (M2018E2) and maintain SPDT circuit configuration with Mom-Off-Mom function. However, complete electrical specifications for MN18E2S1W03 are not fully detailed in available documentation. Verification of current and voltage ratings against application requirements is necessary.

Q: What are the key differences between the TE Connectivity and C&K substitutes?

A: Both 3-1825137-7 (TE Connectivity) and 7105MHCGE (C&K) provide identical current ratings (5A AC/DC) and voltage ratings (120V AC, 28V DC). The primary difference is electrical life: TE Connectivity specifies 6,000 cycles while C&K specifies 40,000 cycles. Packaging also differs, with TE Connectivity supplied in bulk and C&K in tray format.

Q: Are the panel cutout dimensions compatible across all substitutes?

A: The main part M2018E2S1W03 specifies a 6.50mm circular panel cutout. Both substitute parts from TE Connectivity and C&K specify 6.35mm circular cutouts. This 0.15mm difference may require panel modification or use of adapter hardware depending on mechanical tolerance requirements.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant. TE Connectivity and C&K substitutes are REACH Affected, while the original part is REACH Unaffected. All parts carry ECCN classification EAR99 and HTSUS code 8536.50.9065.

Q: Which substitute is recommended for applications requiring maximum electrical life?

A: The C&K 7105MHCGE provides the highest electrical life specification at 40,000 cycles, compared to 25,000 cycles for the original part and 6,000 cycles for the TE Connectivity option. This part is suitable for high-cycle switching applications.