M2012S3S2G40 Equivalent & Substitute Parts

Part Overview

The M2012S3S2G40 is a toggle switch manufactured by NKK Switches, configured as a Single Pole Double Throw (SPDT) with On-On switching function. This through-hole, right-angle vertical mount component is rated for 0.4VA at 28V AC/DC operation. The product is classified as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning in legacy system maintenance and repair applications.

Substiute Parts

M2012S3S2G40

NKK SwitchesIn Stock: 759M2012S3S2G40 Datasheet

Current PartRFQ

M2012S2A2G40

NKK SwitchesIn Stock: 1012M2012S2A2G40 Datasheet

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100SP1T2B4M7RE

E-SwitchIn Stock: 887100SP1T2B4M7RE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the M2012S3S2G40 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit configuration: SPDT
• Switch function: On-On
• Current rating: 0.4VA (AC/DC)
• Mounting type: Through Hole, Right Angle, Vertical
• Termination style: PC Pin
• Actuator type: Standard Round
• Operating temperature range: -30°C to 85°C
• RoHS compliance: ROHS3 Compliant

Voltage Rating Consideration: Substitute parts must operate at or above the voltage requirements of the original component. The M2012S3S2G40 operates at 28V AC/DC. Substitutes rated at lower voltages do not meet the electrical requirements for direct replacement in circuits designed for 28V operation.

Actuator Length Variation: Minor variations in actuator length (within mechanical assembly tolerances) are acceptable provided the mounting interface and panel cutout dimensions remain compatible with through-hole, right-angle vertical installation.

Parameter Comparison

Engineering Selection Recommendations

M2012S2A2G40 (NKK Switches): This substitute maintains full electrical and mechanical compatibility with the M2012S3S2G40. Both components are manufactured by NKK Switches within the M-series family, share identical voltage ratings (28V AC/DC), current capacity (0.4VA), and electrical life specifications (50,000 cycles). Both are ROHS3 compliant and operate across the same temperature range. The actuator length difference (6.86mm versus 6.50mm) represents a minor variation within acceptable mechanical tolerances for through-hole vertical mount applications. This part is recommended as the primary substitute for direct replacement in legacy system repairs.

100SP1T2B4M7RE (E-Switch): This substitute provides functional equivalence in circuit configuration (SPDT, On-On), current rating (0.4VA), mounting type (through-hole, right-angle vertical), and operating temperature range (-30°C to 85°C). However, the voltage rating is specified at 20V AC/DC, which is below the 28V requirement of the original component. This part is not suitable for direct replacement in circuits designed for 28V operation. The electrical life rating (40,000 cycles) is also lower than the original specification (50,000 cycles). This component may only be considered for applications where the actual operating voltage does not exceed 20V AC/DC and where reduced cycle life is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the M2012S2A2G40 be used as a direct replacement for the M2012S3S2G40?

A: Yes. Both components share identical electrical specifications (SPDT, On-On, 0.4VA, 28V AC/DC), mounting configuration (through-hole, right-angle vertical), termination style (PC Pin), and compliance certifications (ROHS3). The actuator length difference (6.86mm versus 6.50mm) is within acceptable mechanical tolerances for this product category.

Q: Is the 100SP1T2B4M7RE suitable for replacement in a 28V circuit?

A: No. The 100SP1T2B4M7RE is rated for 20V AC/DC maximum, which is below the 28V requirement. Use of this component in a 28V circuit exceeds its voltage rating and creates a reliability risk. This part is only suitable for applications operating at 20V AC/DC or lower.

Q: What is the significance of the electrical life rating difference between the M2012S3S2G40 (50,000 cycles) and the 100SP1T2B4M7RE (40,000 cycles)?

A: Electrical life rating indicates the number of switching cycles the component is rated to perform before degradation. The M2012S3S2G40 specification of 50,000 cycles is higher than the 100SP1T2B4M7RE specification of 40,000 cycles. For applications requiring extended operational life or frequent switching, the higher-rated component is preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this comparison—M2012S3S2G40, M2012S2A2G40, and 100SP1T2B4M7RE—are ROHS3 compliant, meeting environmental and hazardous substance restrictions for electronic components.

Q: What is the difference between the M2012S3S2G40 and M2012S2A2G40 part numbers?

A: Both are NKK Switches toggle switches within the M-series family, configured as SPDT On-On switches rated for 0.4VA at 28V. The primary difference is the actuator length: M2012S3S2G40 has a 6.50mm actuator, while M2012S2A2G40 has a 6.86mm actuator. Both are functionally equivalent for through-hole vertical mount applications.