MS12ASW30/U Equivalent & Substitute Parts

Part Overview

The MS12ASW30/U is a slide switch manufactured by NKK Switches, classified as SPDT (Single Pole Double Throw) with a 6A AC rating at 125V. This component features through-hole, right-angle mounting with PC pin termination and silver alloy contacts. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

MS12ASW30/U

NKK SwitchesIn Stock: 1096MS12ASW30/U Datasheet

Current PartRFQ

1101M2S3ABE2

C&KIn Stock: 188741101M2S3ABE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MS12ASW30/U is constrained by the following critical parameters:

Mandatory Matching Criteria:

• Circuit configuration: SPDT
• Switch function: On-On
• Mounting type: Through Hole, Right Angle
• Termination style: PC Pin
• RoHS compliance: ROHS3 Compliant

Electrical Performance Considerations: The MS12ASW30/U operates at 6A AC / 125V AC. Substitute parts must maintain compatibility with these electrical specifications or operate within the same power envelope for the intended application.

Mechanical Compatibility: Actuator length, switch travel distance, and contact material influence physical fit and electrical performance. These parameters are documented for cross-reference purposes.

The identified substitute, 1101M2S3ABE2 (C&K), shares the core SPDT circuit topology and through-hole right-angle mounting configuration. However, electrical ratings differ significantly, requiring application-level verification before deployment.

Parameter Comparison

Engineering Selection Recommendations

MS12ASW30/U (NKK Switches): Obsolete status limits availability. ROHS3 compliant. Suitable for legacy system maintenance where original specifications must be preserved. Current inventory availability: 1064 pcs.

1101M2S3ABE2 (C&K): Active product status ensures ongoing availability and supply chain continuity. ROHS3 compliant. Electrical ratings (0.4VA / 20V AC/DC) are substantially lower than the original MS12ASW30/U (6A / 125V AC). This substitute is suitable only for applications operating within the 20V AC/DC envelope and 0.4VA power limit. Higher operating temperature range of the original (-30°C to 85°C vs. -30°C to 65°C) is not matched. Current inventory availability: 18813 pcs.

Both parts maintain SPDT circuit topology, On-On switching function, through-hole right-angle mounting, and PC pin termination. Compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the 1101M2S3ABE2 directly replace the MS12ASW30/U in all applications?

A: No. The 1101M2S3ABE2 has significantly lower electrical ratings (0.4VA / 20V AC/DC vs. 6A / 125V AC). Substitution is valid only for applications operating within the lower power envelope. Verify circuit voltage and current requirements before selection.

Q: What are the key compatibility factors for SPDT slide switch substitution?

A: Circuit configuration (SPDT), switch function (On-On), mounting type (through-hole right-angle), and termination style (PC pin) must match. Electrical ratings, contact material, and operating temperature range must be evaluated against application requirements.

Q: How do the actuator dimensions compare?

A: MS12ASW30/U actuator length is 5.10mm with 2.20mm switch travel. The 1101M2S3ABE2 actuator length is 4.72mm with 2.16mm switch travel. These minor differences may affect mechanical fit in constrained PCB layouts.

Q: What is the significance of contact material differences?

A: MS12ASW30/U uses silver alloy contacts; 1101M2S3ABE2 uses copper with gold finish. Silver alloy provides superior conductivity and lower contact resistance, beneficial for higher-current applications. Gold-plated copper is suitable for lower-power signal switching.

Q: Are both parts RoHS compliant?

A: Yes. Both MS12ASW30/U and 1101M2S3ABE2 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the packaging difference?

A: MS12ASW30/U is supplied with standard packaging (not specified). 1101M2S3ABE2 is supplied in trays, which may affect handling and storage procedures.