MS20BFW01 Equivalent & Substitute Parts

Part Overview

The MS20BFW01 is a slide switch manufactured by NKK Switches, configured as a single-pole triple-throw (SP3T) panel mount switch rated for 6A at 125V AC. This component features non-shorting (break-before-make) contact timing and is designed for applications requiring three discrete switching positions. The MS20BFW01 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MS20BFW01

NKK SwitchesIn Stock: 787MS20BFW01 Datasheet

Current PartRFQ

MSN24BFW01

NKK SwitchesIn Stock: 1510MSN24BFW01 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MS20BFW01 is determined by the following critical parameters:

• Circuit Configuration: SP3T topology must be maintained to preserve three-position switching functionality
• Electrical Ratings: Current (6A AC) and voltage (125V AC) ratings establish the minimum performance envelope
• Contact Timing: Non-shorting (break-before-make) operation prevents simultaneous contact closure across positions
• Mounting and Termination: Panel mount configuration with solder lug termination ensures mechanical and electrical compatibility with existing PCB layouts
• Contact Material and Finish: Silver alloy contacts provide consistent switching performance across the specified load range
• Environmental Compliance: RoHS3 compliance and REACH status ensure regulatory alignment

The MSN24BFW01 qualifies as a manufacturer-recommended substitute based on alignment with these core parameters within the NKK Switches product family.

Parameter Comparison

Engineering Selection Recommendations

The MSN24BFW01 is the manufacturer-designated substitute for the obsolete MS20BFW01. Both components are manufactured by NKK Switches and maintain identical regulatory compliance profiles (ROHS3, EAR99 classification, and matching HTSUS codes). The MSN24BFW01 carries active product status, ensuring ongoing availability and supply chain continuity.

Selection of the MSN24BFW01 is appropriate for applications currently using the MS20BFW01 where the specified electrical ratings (6A AC, 125V AC), circuit configuration (SP3T), and mechanical form factor (panel mount, solder lug termination) remain unchanged. The transition from obsolete to active product status provides improved long-term component availability.

Frequently Asked Questions (FAQ)

Q: What makes the MSN24BFW01 a suitable substitute for the MS20BFW01?

A: Both components are NKK Switches products with matching electrical ratings (6A AC, 125V AC), identical circuit configuration (SP3T), and compatible mechanical interfaces (panel mount with solder lug termination). Both maintain ROHS3 compliance and identical trade classification codes.

Q: Are there any electrical performance differences between these parts?

A: The provided specifications confirm alignment on all critical electrical parameters: current rating, voltage rating, contact material (silver alloy), and contact timing (non-shorting). No electrical performance degradation occurs with substitution.

Q: How does the active product status of the MSN24BFW01 affect component selection?

A: Active product status indicates ongoing manufacturing and distribution support. This eliminates supply chain risk associated with the obsolete MS20BFW01 and ensures availability for both replacement and new design applications.

Q: Are there packaging considerations when transitioning to the MSN24BFW01?

A: Both components utilize panel mount configuration with solder lug termination, ensuring compatibility with existing PCB layouts and assembly processes. No mechanical redesign is required.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the MS20BFW01 and MSN24BFW01 are ROHS3 compliant, carry EAR99 export classification, and share the identical HTSUS code (8536.50.9050), confirming regulatory equivalence.