S2BW Toggle Switch SPDT 5A 125V Equivalent & Substitute Parts

Part Overview

The S2BW is a toggle switch manufactured by NKK Switches, configured as a Single Pole Double Throw (SPDT) panel mount switch rated for 5A at 125V AC and 30V DC. This switch features a standard round actuator with solder lug termination and IP67 ingress protection. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

S2BW

NKK SwitchesIn Stock: 1075S2BW Datasheet

Current PartRFQ

ET105D12-Z

Nidec Components CorporationIn Stock: 1065ET105D12-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S2BW is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPDT
• Switch function must be On-On
• Current rating must support minimum 5A
• AC voltage rating must be 125V or higher
• DC voltage rating must be 30V or higher (where applicable)

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount
• Actuator type must be Standard Round
• Panel cutout dimensions must be Circular 12.50mm Dia
• Bushing thread must be M12 x 1
• Termination style must be Solder Lug

Environmental Requirements:

• Operating temperature range must encompass -30°C to 70°C or be compatible with this range
• Ingress protection rating should maintain IP67 or equivalent sealing capability

The ET105D12-Z from Nidec Components Corporation meets all electrical and mechanical compatibility criteria for direct substitution in applications where the S2BW is currently specified.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ET105D12-Z

The ET105D12-Z is the qualified equivalent for S2BW replacement applications. Selection rationale is based on the following factors:

• All critical electrical parameters (circuit, function, current, voltage) are identical or exceed S2BW specifications
• Mechanical interface parameters (panel cutout, bushing thread, termination) provide direct compatibility
• The 0.50mm actuator length difference (17.00mm vs 17.50mm) is within acceptable mechanical tolerance for standard panel mount applications
• ET105D12-Z maintains active product status with current manufacturing availability, eliminating supply chain risk associated with the obsolete S2BW
• RoHS3 compliance of ET105D12-Z provides regulatory advantage for new designs and long-term system support
• Electrical life rating of 20,000 cycles on ET105D12-Z is acceptable for most industrial and commercial applications, though applications requiring extended cycle life beyond 20,000 cycles should evaluate this parameter against specific duty cycle requirements

Compliance Considerations:

Both parts carry EAR99 ECCN classification and share identical HTSUS codes, indicating equivalent trade compliance status. The ET105D12-Z RoHS3 compliance status provides additional regulatory alignment for modern manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can ET105D12-Z be used as a direct replacement for S2BW in existing designs?

A: Yes. The ET105D12-Z meets all specified electrical and mechanical parameters for direct substitution. The 0.50mm actuator length difference does not affect panel mount compatibility or functional performance in standard applications.

Q: What is the significance of the electrical life difference (25,000 vs 20,000 cycles)?

A: The S2BW specifies 25,000 electrical cycles while ET105D12-Z specifies 20,000 cycles. For applications with cycle counts below 20,000, this difference is not a limiting factor. Applications approaching or exceeding 20,000 cycles should evaluate their specific duty cycle requirements against this parameter.

Q: Why is the ET105D12-Z recommended despite the S2BW having higher electrical life?

A: The ET105D12-Z is recommended because it is actively manufactured and available, whereas the S2BW is obsolete. The 5,000-cycle difference in electrical life is acceptable for the majority of industrial applications. New designs should specify ET105D12-Z to ensure long-term supply chain continuity and regulatory compliance.

Q: Are there any packaging differences between S2BW and ET105D12-Z?

A: S2BW is packaged in standard format while ET105D12-Z is supplied in bulk packaging. Both are suitable for solder lug termination and panel mount installation. Packaging format does not affect electrical or mechanical compatibility.

Q: What is the operating temperature range for ET105D12-Z?

A: Operating temperature range specifications were not provided for ET105D12-Z in the available data. Applications requiring operation across the full -30°C to 70°C range should confirm ET105D12-Z temperature capability with the manufacturer before final design approval.

Q: Is the ET105D12-Z RoHS compliant?

A: Yes. ET105D12-Z is RoHS3 compliant, providing regulatory advantage for applications subject to RoHS requirements. The S2BW RoHS status was not specified in available data.