KB25SKW01-12-JB Equivalent & Substitute Parts

Part Overview

The KB25SKW01-12-JB is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with illuminated panel mount design. This component is rated for 1A at 125V AC and includes incandescent white illumination at 12VAC nominal voltage. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

KB25SKW01-12-JB

NKK SwitchesIn Stock: 926KB25SKW01-12-JB Datasheet

Current PartRFQ

YB25SKW01-5F-JB

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB25SKW01-12-JB is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: DPDT required
• Switch function: On-Mom operation required
• Mounting type: Panel Mount, Front required
• Voltage rating: Minimum 125V AC and 30V DC required
• Operating temperature range: -25°C to 50°C required

Allowable Variations:

• Current rating: May increase from 1A to higher ratings (3A acceptable)
• Illumination type: May transition from incandescent to LED
• Illumination voltage: May differ if system design accommodates
• Panel cutout diameter: May increase if mechanical installation permits
• Mechanical and electrical life: May increase
• Termination style: May vary based on circuit board design

The substitute part YB25SKW01-5F-JB meets all mandatory compatibility parameters while providing enhanced electrical characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The YB25SKW01-5F-JB serves as a direct functional substitute for the obsolete KB25SKW01-12-JB. Both components maintain identical DPDT circuit configuration, On-Mom switch function, and panel mount specifications. The substitute part provides enhanced reliability through increased current capacity (3A versus 1A), extended mechanical life (1,000,000 versus 100,000 cycles), and doubled electrical life (100,000 versus 50,000 cycles).

Both parts maintain full ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system replacements. The substitute's active product status ensures long-term availability and supply chain continuity compared to the obsolete main part.

The transition from incandescent to LED illumination in the substitute requires system-level evaluation of illumination voltage compatibility. The substitute operates at 2.2VDC with voltage reduction lighting features, whereas the main part requires 12VAC illumination supply. Panel cutout diameter increases from 12.30mm to 16.00mm, necessitating mechanical verification for installation feasibility.

Frequently Asked Questions (FAQ)

Q: Can YB25SKW01-5F-JB directly replace KB25SKW01-12-JB without circuit modifications?

A: Electrical circuit compatibility is confirmed for DPDT, On-Mom, 125V AC, and 30V DC specifications. Illumination circuit modification is required due to voltage and technology differences (12VAC incandescent to 2.2VDC LED). Panel cutout diameter increase from 12.30mm to 16.00mm requires mechanical verification.

Q: What are the key differences between these two parts?

A: Current rating increases from 1A to 3A. Mechanical life extends from 100,000 to 1,000,000 cycles. Electrical life doubles from 50,000 to 100,000 cycles. Illumination transitions from incandescent white (12VAC) to LED green (2.2VDC). Termination style changes from solder lug to solder with quick connect options. Panel cutout diameter increases from 12.30mm to 16.00mm.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both KB25SKW01-12-JB and YB25SKW01-5F-JB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What is the impact of the larger panel cutout diameter?

A: The substitute requires a 16.00mm circular panel cutout compared to 12.30mm for the main part. Existing panel designs with 12.30mm cutouts require mechanical modification or alternative mounting solutions to accommodate the larger diameter.

Q: How does the illumination change affect system design?

A: The main part uses 12VAC incandescent illumination, while the substitute uses 2.2VDC LED illumination with voltage reduction lighting. System power supply and control circuits must be evaluated for compatibility with the lower DC voltage requirement and LED characteristics.

Q: Is the higher current rating of the substitute a concern?

A: No. The 3A rating of the substitute exceeds the 1A requirement of the main part, providing additional capacity margin. This enhancement improves reliability without creating compatibility issues in circuits designed for 1A operation.