MS20BNW03 Equivalent & Substitute Parts

Part Overview

The MS20BNW03 is a slide switch manufactured by NKK Switches, configured as a single-pole triple-throw (SP3T) switch with 6A AC current rating at 125V. This through-hole mounted component features non-shorting (break-before-make) contact timing and is designed for On-On-On switching applications. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

MS20BNW03

NKK SwitchesIn Stock: 1036MS20BNW03 Datasheet

Current PartRFQ

MSN24BNW03

NKK SwitchesIn Stock: 820MSN24BNW03 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS20BNW03 is determined by the following critical parameters:

• Circuit Configuration: SP3T topology with non-shorting contact timing
• Electrical Ratings: 6A AC at 125V minimum
• Switching Function: On-On-On operation
• Mounting Interface: Through-hole with PC pin termination
• Contact Material: Silver alloy construction
• Environmental Compliance: ROHS3 compliance and EAR99 classification

The substitute part MSN24BNW03, also manufactured by NKK Switches, maintains compatibility within the MS series family. Both parts share identical HTSUS classification (8536.50.9050) and regulatory status, confirming their functional equivalence for component replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The MSN24BNW03 is the manufacturer-recommended substitute for the obsolete MS20BNW03. Selection of this replacement part is supported by:

• Active Product Status: MSN24BNW03 maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Alignment: Both parts carry identical ROHS3 compliance and EAR99 export classification, eliminating regulatory substitution barriers
• Manufacturer Endorsement: NKK Switches explicitly designates MSN24BNW03 as the direct replacement within the MS series product line
• Tariff Classification Consistency: Identical HTSUS coding confirms functional and structural equivalence for procurement purposes

Frequently Asked Questions (FAQ)

Q: Why is the MS20BNW03 classified as obsolete? A: The MS20BNW03 has reached end-of-life status within NKK Switches' product portfolio. The MSN24BNW03 represents the current-generation equivalent within the MS series family.

Q: Can MSN24BNW03 be used as a direct replacement in existing designs? A: MSN24BNW03 is the manufacturer-recommended substitute. Both parts share identical regulatory classifications (ROHS3, EAR99) and tariff codes, confirming functional compatibility for through-hole SP3T switching applications.

Q: What are the key parameters that determine substitution compatibility? A: Substitution compatibility is determined by circuit configuration (SP3T), current and voltage ratings (6A AC / 125V), contact timing (non-shorting), switch function (On-On-On), mounting type (through-hole), and termination style (PC pin).

Q: Are there inventory considerations when transitioning from MS20BNW03 to MSN24BNW03? A: Current inventory of MS20BNW03 is 1,015 pieces. MSN24BNW03 inventory is 797 pieces. Both are available in bulk packaging.

Q: What compliance certifications apply to both parts? A: Both MS20BNW03 and MSN24BNW03 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.