KB25SKW01-5F-JB Equivalent & Substitute Parts

Part Overview

The KB25SKW01-5F-JB is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuit configuration with illuminated panel mount design. This component operates at 1A AC/DC with 125V AC and 30V DC voltage ratings, utilizing LED green illumination for visual feedback. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this series is no longer available through standard distribution channels.

Substiute Parts

KB25SKW01-5F-JB

NKK SwitchesIn Stock: 1199KB25SKW01-5F-JB Datasheet

Current PartRFQ

YB25SKW01-5F-JB

NKK SwitchesIn Stock: 995YB25SKW01-5F-JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25SKW01-5F-JB is determined by the following critical parameters:

Circuit configuration must remain DPDT to maintain electrical functionality within the host system. Switch function (On-Mom) must be preserved to ensure operational behavior consistency. Voltage ratings (125V AC minimum, 30V DC minimum) establish the electrical compatibility envelope. Current rating must meet or exceed the 1A requirement to handle the load without derating. Mounting type (Panel Mount, Front) and panel cutout dimensions (12.30mm circular) define mechanical fit within the enclosure. Illumination type (LED, Green) and voltage (2.1 VDC nominal) ensure visual indicator compatibility with existing power supply circuits. Termination style compatibility depends on PCB or wiring infrastructure. Operating temperature range (-25°C to 50°C minimum) and mechanical/electrical life specifications establish reliability parameters for the intended application environment.

The YB25SKW01-5F-JB qualifies as a substitute based on matching circuit configuration, switch function, voltage ratings, mounting type, illumination type, and operating temperature range. However, differences in current rating, panel cutout diameter, termination style, and lifecycle specifications require engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The YB25SKW01-5F-JB represents an active product alternative to the obsolete KB25SKW01-5F-JB. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system updates.

Selection of the YB25SKW01-5F-JB requires evaluation of three primary differences:

Current rating elevation from 1A to 3A provides increased load capacity, eliminating potential derating concerns in applications approaching the original 1A specification limit. This enhancement does not introduce incompatibility with lower-current circuits.

Panel cutout diameter increase from 12.30mm to 16.00mm necessitates mechanical modification to the enclosure. Existing 12.30mm cutouts cannot accommodate the larger bezel without enlargement. New designs should incorporate the 16.00mm specification to align with active product availability.

Termination style transition from solder lug to solder with quick connect 0.110" (2.8mm) requires wiring infrastructure adaptation. Existing solder lug connections must be reworked or replaced with quick connect terminals. The YB25SKW01-5F-JB includes voltage reduction lighting feature, providing enhanced illumination circuit efficiency.

Extended mechanical life (1,000,000 cycles versus 100,000 cycles) and doubled electrical life (100,000 cycles versus 50,000 cycles) improve component reliability and system longevity.

Frequently Asked Questions (FAQ)

Q: Can the YB25SKW01-5F-JB directly replace the KB25SKW01-5F-JB without modifications?

A: Direct replacement is not possible without mechanical and electrical modifications. The panel cutout diameter differs (16.00mm versus 12.30mm), requiring enclosure modification. Termination style differs (quick connect versus solder lug), requiring wiring rework. Illumination voltage differs slightly (2.2 VDC versus 2.1 VDC), which may require power supply circuit adjustment.

Q: What are the implications of the 3A current rating on the YB25SKW01-5F-JB versus the 1A rating of the KB25SKW01-5F-JB?

A: The higher current rating indicates increased switch contact capacity. In applications requiring 1A or less, the YB25SKW01-5F-JB operates well within its rating, providing design margin. No derating or thermal management changes are required for equivalent or lower current loads.

Q: Are both components suitable for the same voltage environments?

A: Yes. Both components are rated for 125V AC and 30V DC, establishing identical voltage compatibility. Illumination voltage differs marginally (2.1 VDC versus 2.2 VDC), which is within typical LED tolerance ranges and does not affect functional compatibility in standard applications.

Q: What is the significance of the mechanical and electrical life differences?

A: The KB25SKW01-5F-JB specifies 100,000 mechanical cycles and 50,000 electrical cycles. The YB25SKW01-5F-JB specifies 1,000,000 mechanical cycles and 100,000 electrical cycles. These differences reflect design improvements in the active product line. For applications with high cycle counts or extended service life requirements, the YB25SKW01-5F-JB provides enhanced reliability margins.

Q: Can the quick connect termination of the YB25SKW01-5F-JB be converted to solder lug configuration?

A: The YB25SKW01-5F-JB is supplied with quick connect 0.110" (2.8mm) terminals as standard. Custom termination modifications are outside standard product specifications and must be evaluated through the component manufacturer or authorized service providers.

Q: What packaging considerations apply to these components?

A: The KB25SKW01-5F-JB is supplied in standard packaging. The YB25SKW01-5F-JB is supplied in tray packaging. Packaging differences do not affect component functionality or electrical performance, only handling and storage logistics.