KB25SKW01-A Equivalent & Substitute Parts

Part Overview

The KB25SKW01-A is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuit configuration with 1A current rating at 125V AC. This component is designed for standard panel mount applications with front-facing actuator orientation. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

KB25SKW01-A

NKK SwitchesIn Stock: 805KB25SKW01-A Datasheet

Current PartRFQ

YB25WSKW01-FB

NKK SwitchesIn Stock: 1051YB25WSKW01-FB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25SKW01-A is determined by the following critical parameters:

Mandatory Matching Parameters:

• Circuit Configuration: DPDT
• Switch Function: On-Mom (Momentary)
• Voltage Rating - AC: 125V
• Voltage Rating - DC: 30V
• Mounting Type: Panel Mount, Front
• Actuator Type: Square, Button
• Operating Temperature Range: -25°C to 70°C
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Current Rating: May be equal to or greater than 1A
• Mechanical Life: May be equal to or greater than 100,000 cycles
• Electrical Life: May be equal to or greater than 50,000 cycles
• Termination Style: Alternative termination methods acceptable if panel mount compatibility maintained
• Panel Cutout Diameter: Larger cutout acceptable with mechanical adapter consideration
• Packaging: May differ from original specification

The substitute part YB25WSKW01-FB meets all mandatory matching parameters while exceeding performance specifications in current rating (3A vs 1A), mechanical life (1,000,000 vs 100,000 cycles), and electrical life (100,000 vs 50,000 cycles).

Parameter Comparison

Engineering Selection Recommendations

The YB25WSKW01-FB is a direct functional substitute for the KB25SKW01-A based on matching circuit topology, voltage ratings, and operating temperature specifications. Both components maintain ROHS3 compliance and are manufactured by the same supplier.

Selection of YB25WSKW01-FB is supported by:

• Active product status, ensuring continued availability and supply chain reliability
• Enhanced electrical performance specifications (3A current rating, 100,000 cycle electrical life) providing operational margin above original design requirements
• Superior mechanical durability (1,000,000 cycle mechanical life) extending component service life
• IP65 ingress protection rating providing enhanced environmental resistance
• ROHS3 compliance maintaining regulatory alignment with the original component

Panel cutout diameter increase from 12.30mm to 16.00mm requires mechanical panel modification or use of adapter hardware. Termination style variation from solder lug to solder with quick connect requires circuit board layout adjustment or connector adaptation.

Frequently Asked Questions (FAQ)

Q: Can YB25WSKW01-FB directly replace KB25SKW01-A without modifications?

A: Functional replacement is possible. Panel cutout diameter and termination style differences require mechanical and electrical interface modifications. The larger 16.00mm cutout necessitates panel drilling adjustment or adapter hardware. Termination style change from solder lug to quick connect requires circuit board redesign or connector interface implementation.

Q: What are the key compatibility criteria for DPDT pushbutton switch substitution?

A: Circuit configuration (DPDT), switch function (On-Mom), voltage ratings (125V AC / 30V DC), mounting type (panel mount front), and actuator type (square button) must match exactly. Current rating, mechanical life, and electrical life may be equal to or exceed original specifications.

Q: Is the higher current rating of YB25WSKW01-FB (3A vs 1A) compatible with KB25SKW01-A circuit designs?

A: Yes. Higher current rating indicates greater electrical capacity and does not create incompatibility with circuits designed for lower current operation. The component will function correctly in applications rated for 1A or lower.

Q: What is the significance of the IP65 rating on YB25WSKW01-FB?

A: IP65 classification indicates dust-tight and water-resistant construction. This provides enhanced environmental protection compared to the unspecified ingress protection of KB25SKW01-A, making it suitable for applications requiring moisture or contamination resistance.

Q: Are there packaging differences between these components?

A: KB25SKW01-A is supplied in standard packaging (unspecified). YB25WSKW01-FB is supplied in tray packaging. Packaging difference does not affect component functionality or electrical performance.

Q: Why is KB25SKW01-A classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. YB25WSKW01-FB, classified as active, represents the current production alternative from NKK Switches for this switch category.