KB25SKW01-12-JC Equivalent & Substitute Parts

Part Overview

The KB25SKW01-12-JC is a DPDT pushbutton switch manufactured by NKK Switches, designed for panel-mount applications with illuminated operation. This component features a 1A current rating at 125V AC and incandescent red illumination at 12VAC. 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-JC

NKK SwitchesIn Stock: 1030KB25SKW01-12-JC Datasheet

Current PartRFQ

YB25SKW01-5C12-JC

NKK SwitchesIn Stock: 863YB25SKW01-5C12-JC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Mandatory Compatibility Parameters:

• Circuit configuration (DPDT)
• Switch function (On-Mom)
• Mounting type (Panel Mount, Front)
• Voltage ratings (125V AC / 30V DC minimum)
• Operating temperature range (-25°C to 50°C)
• RoHS3 compliance

Allowable Variation Parameters:

• Current rating: The substitute may exceed the original 1A specification, provided it meets or exceeds the minimum requirement
• Illumination technology: Transition from incandescent to LED is acceptable with voltage adjustment capability
• Illumination voltage: Substitute may operate at different nominal voltage (12VDC vs. 12VAC) if system design accommodates
• Panel cutout diameter: Larger cutout (16.00mm vs. 12.30mm) requires mechanical redesign of panel interface
• Mechanical and electrical life: Higher cycle ratings are acceptable
• Termination style: Variation from solder lug to quick-connect is acceptable if system wiring supports

The YB25SKW01-5C12-JC meets these substitution criteria with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The YB25SKW01-5C12-JC is a valid substitute for the obsolete KB25SKW01-12-JC based on the following engineering criteria:

Functional Equivalence: Both components maintain identical DPDT circuit configuration and On-Mom switch function, ensuring direct functional replacement in control circuits.

Electrical Compatibility: The substitute's 3A current rating exceeds the original 1A specification, providing enhanced capacity for the same 125V AC and 30V DC voltage ratings. This uprating is acceptable for applications where the original 1A specification was not a limiting design constraint.

Compliance Status: Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute's active product status ensures ongoing availability and manufacturer support.

Performance Enhancement: The YB25SKW01-5C12-JC provides superior mechanical life (1,000,000 vs. 100,000 cycles) and electrical life (100,000 vs. 50,000 cycles), extending component service intervals.

Implementation Considerations: Panel cutout diameter increases from 12.30mm to 16.00mm, requiring mechanical panel redesign. Illumination transitions from incandescent (12VAC) to LED (12VDC), necessitating circuit modification for voltage supply compatibility. Termination changes from solder lug to quick-connect 0.110" (2.8mm), requiring wiring harness adaptation.

Frequently Asked Questions (FAQ)

Q: Can the YB25SKW01-5C12-JC directly replace the KB25SKW01-12-JC without any modifications?

A: Electrical and functional replacement is direct. Mechanical and illumination modifications are required. Panel cutout diameter must be enlarged from 12.30mm to 16.00mm. Illumination supply must transition from 12VAC to 12VDC. Termination connections must be adapted from solder lug to quick-connect 0.110" (2.8mm).

Q: What is the significance of the current rating increase from 1A to 3A?

A: The substitute provides higher current-carrying capacity. This is acceptable for applications where the original 1A rating was not a design-limiting factor. If the application specifically requires 1A maximum current, the higher rating does not create incompatibility.

Q: Are both components suitable for the same operating temperature range?

A: Yes. Both components operate across -25°C to 50°C, ensuring thermal compatibility in equivalent environmental conditions.

Q: What are the implications of the illumination technology change from incandescent to LED?

A: Incandescent illumination operates at 12VAC; LED illumination operates at 12VDC. The substitute includes voltage reduction lighting features. System power supply must be modified to provide 12VDC instead of 12VAC for the illumination circuit.

Q: How do the mechanical and electrical life ratings affect component selection?

A: The substitute provides extended service life (1,000,000 mechanical cycles vs. 100,000; 100,000 electrical cycles vs. 50,000). This represents improved durability and longer maintenance intervals, with no negative impact on compatibility.

Q: What packaging differences exist between these components?

A: The main part is packaged as individual units (-); the substitute is packaged in bulk. Procurement and inventory management processes may require adjustment accordingly.