KB25MKW01-FF Equivalent & Substitute Parts

Part Overview

The KB25MKW01-FF is a DPDT pushbutton switch manufactured by NKK Switches, rated for 1A at 125V AC with panel mount, snap-in installation. This component features a round green button actuator with solder lug termination and is designed for standard switching applications requiring momentary on-off operation.

The KB25MKW01-FF is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this model is no longer readily available through standard distribution channels.

Substiute Parts

KB25MKW01-FF

NKK SwitchesIn Stock: 966KB25MKW01-FF Datasheet

Current PartRFQ

YB25MKW01-FB

NKK SwitchesIn Stock: 825YB25MKW01-FB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25MKW01-FF is determined by the following critical parameters:

• Circuit configuration must remain DPDT
• Switch function must remain On-Mom (momentary operation)
• Voltage ratings must meet or exceed the original specification (125V AC minimum, 30V DC minimum)
• Current rating must meet or exceed 1A
• Mounting type must be Panel Mount, Snap-In compatible
• Actuator type must be Round, Button
• Operating temperature range must encompass -25°C to 70°C
• RoHS3 compliance must be maintained

The YB25MKW01-FB meets these substitution criteria with enhanced electrical and mechanical performance characteristics while maintaining functional equivalence in circuit topology and mounting interface.

Parameter Comparison

Engineering Selection Recommendations

The YB25MKW01-FB is suitable as a substitute for the KB25MKW01-FF based on the following factors:

Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The YB25MKW01-FB is classified as active product status, providing assured long-term availability and supply chain continuity compared to the obsolete KB25MKW01-FF.

The substitute part provides enhanced electrical and mechanical performance with 3A current rating versus 1A, and 1,000,000 mechanical cycles versus 100,000 cycles. These improvements offer design margin and extended component life in applications where the original part is no longer available.

Panel cutout diameter increases from 12.30mm to 16.00mm, requiring mechanical redesign of the mounting interface. Termination style changes from solder lug to solder with quick connect option, necessitating circuit board layout and connector modifications.

Frequently Asked Questions (FAQ)

Q: Can the YB25MKW01-FB directly replace the KB25MKW01-FF without modifications?

A: Direct replacement requires mechanical and electrical interface modifications. The panel cutout diameter differs (16.00mm versus 12.30mm), and termination style changes from solder lug to solder with quick connect. Circuit board layout and mounting hardware must be redesigned accordingly.

Q: What are the key compatibility factors for substitution?

A: Circuit configuration (DPDT), switch function (On-Mom), voltage ratings (125V AC, 30V DC), and mounting type (Panel Mount, Snap-In) must remain consistent. The substitute part meets all these requirements while providing enhanced current capacity and cycle life.

Q: Why does the substitute part have a larger panel cutout diameter?

A: The YB25MKW01-FB features a 16.00mm panel cutout diameter compared to 12.30mm for the KB25MKW01-FF. This is a mechanical design difference between the two product series and requires panel modification or redesign for installation.

Q: Are both parts RoHS compliant?

A: Yes, both the KB25MKW01-FF and YB25MKW01-FB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in termination between these parts?

A: The KB25MKW01-FF uses solder lug termination, while the YB25MKW01-FB provides both solder and quick connect 0.110" (2.8mm) termination options. Circuit board design must accommodate the selected termination method.