MS12ANW03 Equivalent & Substitute Parts

Part Overview

The MS12ANW03 is a slide switch manufactured by NKK Switches, classified as SPDT (Single Pole Double Throw) with a 6A AC rating at 125V. This through-hole component features non-shorting contact timing and is designed for On-On switching applications. The product is currently obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Substiute Parts

MS12ANW03

NKK SwitchesIn Stock: 1940MS12ANW03 Datasheet

Current PartRFQ

MSN12ANW03

NKK SwitchesIn Stock: 1648MSN12ANW03 Datasheet

MFR RecommendedRFQ

4M1-SSP1-S1/2-M2QE

Carling TechnologiesIn Stock: 9034M1-SSP1-S1/2-M2QE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS12ANW03 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPDT)
• Switch function (On-On)
• Mounting type (Through Hole)
• Termination style (PC Pin)
• Actuator length (5.10mm)
• Operating temperature range (-30°C to 85°C)
• Contact material (Silver or Silver Alloy)
• RoHS compliance status

Current and Voltage Ratings: Substitute parts must meet or exceed the AC current rating of 6A at 125V AC. Parts with lower current ratings or voltage specifications are not suitable for direct replacement.

Identified Substitutes:

1. MSN12ANW03 (NKK Switches) – Manufacturer-recommended equivalent with active product status
2. 4M1-SSP1-S1/2-M2QE (Carling Technologies) – Similar SPDT slide switch with comparable electrical and mechanical specifications

Parameter Comparison

Engineering Selection Recommendations

MSN12ANW03 (NKK Switches) is the primary substitute option. As a manufacturer-recommended equivalent from NKK Switches with active product status, this part maintains design continuity within the same product family. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) align with the original specification.

4M1-SSP1-S1/2-M2QE (Carling Technologies) serves as an alternative cross-manufacturer substitute. This part maintains SPDT configuration, On-On function, through-hole mounting, and PC pin termination. The 5A AC rating at 125V is 1A lower than the original specification; applications requiring the full 6A capacity must be evaluated against actual circuit requirements. ROHS3 compliance and MSL 1 rating match the original part. Electrical life of 30,000 cycles exceeds the original 25,000-cycle specification.

Both substitutes are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete MS12ANW03.

Frequently Asked Questions (FAQ)

Q: Can the MSN12ANW03 be used as a direct replacement for MS12ANW03?

A: Yes. The MSN12ANW03 is the manufacturer-recommended equivalent from NKK Switches. Both parts share the same SPDT circuit configuration, On-On switching function, through-hole mounting, and PC pin termination. The MSN12ANW03 maintains active product status, ensuring continued availability.

Q: What is the key limitation of the 4M1-SSP1-S1/2-M2QE substitute?

A: The 4M1-SSP1-S1/2-M2QE has a 5A AC current rating compared to the original 6A specification. Applications operating at or near 6A must be evaluated to determine if the 5A rating is acceptable for the intended circuit. The part is otherwise compatible in circuit configuration, voltage rating, mounting type, and termination style.

Q: Are both substitutes RoHS compliant?

A: Yes. Both MSN12ANW03 and 4M1-SSP1-S1/2-M2QE are ROHS3 compliant, matching the original MS12ANW03 specification.

Q: What is the difference in electrical life between the original and substitutes?

A: The MS12ANW03 has 25,000 electrical life cycles. The 4M1-SSP1-S1/2-M2QE exceeds this with 30,000 cycles. The MSN12ANW03 electrical life specification is not provided in available documentation.

Q: Can these substitutes be used in both AC and DC applications?

A: The MS12ANW03 and MSN12ANW03 are rated for 125V AC. The 4M1-SSP1-S1/2-M2QE supports both 125V AC and 28V DC operation, providing additional flexibility for DC circuit applications.

Q: Are the physical dimensions identical across all three parts?

A: All three parts share a 5.10mm actuator length and operate within the -30°C to 85°C temperature range. Detailed mechanical drawings should be consulted to confirm complete dimensional compatibility for PCB layout and mechanical assembly.