KB25RKW01-12-EB Equivalent & Substitute Parts

Part Overview

The KB25RKW01-12-EB is a DPDT pushbutton switch manufactured by NKK Switches, designed for panel-mount applications with illuminated functionality. This component features a 1A current rating at 125V AC and 30V DC, with incandescent yellow illumination at 12VAC nominal voltage. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where similar electrical and mechanical characteristics are required.

Substiute Parts

KB25RKW01-12-EB

NKK SwitchesIn Stock: 976KB25RKW01-12-EB Datasheet

Current PartRFQ

YB25RKW01-5D12-JD

NKK SwitchesIn Stock: 958YB25RKW01-5D12-JD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25RKW01-12-EB is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be DPDT
• Switch function must be On-Momentary
• Voltage ratings must meet or exceed 125V AC and 30V DC
• Current rating must support minimum 1A operation

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount, Front
• Panel cutout dimensions must accommodate the component
• Actuator type must be Rectangular Button
• Termination style must be compatible with solder lug connections

Environmental & Operational Requirements:

• Operating temperature range must encompass -25°C to 50°C
• Mechanical life must support 100,000 cycles minimum
• RoHS3 compliance required

The YB25RKW01-5D12-JD meets these substitution criteria with enhanced electrical and mechanical performance characteristics while maintaining functional equivalence in circuit topology and mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

The YB25RKW01-5D12-JD is an active product substitute for the obsolete KB25RKW01-12-EB. Both components maintain identical DPDT circuit topology, On-Momentary switch function, and panel-mount front configuration. The substitute part provides enhanced electrical performance with 3A current rating versus 1A, and superior mechanical durability with 1,000,000 cycle life versus 100,000 cycles.

Key considerations for selection:

Electrical Compatibility: The substitute part exceeds voltage and current requirements of the original design, ensuring direct functional replacement in existing circuits.

Mechanical Compatibility: Panel cutout diameter increases from 12.30mm to 16.00mm, requiring panel modification for installation.

Illumination Differences: The substitute uses LED amber illumination at 2VDC versus incandescent yellow at 12VAC. Illumination circuit redesign is necessary.

Termination Compatibility: The substitute offers dual termination options (Solder and Quick Connect 0.110"), providing installation flexibility beyond the original solder lug configuration.

Compliance Status: The substitute part maintains MSL 1 rating. RoHS3 compliance status for the substitute is not specified in available documentation.

Frequently Asked Questions (FAQ)

Q: Can the YB25RKW01-5D12-JD directly replace the KB25RKW01-12-EB without modifications?

A: Electrical and functional replacement is direct. Panel cutout diameter modification from 12.30mm to 16.00mm is required. Illumination circuit redesign is necessary due to voltage and technology differences (12VAC incandescent to 2VDC LED).

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

A: The substitute provides higher current capacity (3A versus 1A) and extended electrical life (100,000 cycles versus 50,000 cycles). Voltage ratings remain identical at 125V AC and 30V DC.

Q: Are there mechanical life implications for using the substitute?

A: The substitute offers 10x greater mechanical life (1,000,000 cycles versus 100,000 cycles), providing enhanced durability for high-cycle applications.

Q: What panel modifications are required for installation?

A: The panel cutout diameter must be enlarged from 12.30mm to 16.00mm to accommodate the larger substitute component.

Q: How does the illumination change affect system design?

A: The original 12VAC incandescent yellow illumination is replaced with 2VDC LED amber illumination. Separate illumination power supply and circuit design modifications are required.

Q: Are termination options compatible with existing wiring?

A: The original solder lug termination is replaced with solder and quick connect 0.110" (2.8mm) options. Wiring harness modifications may be necessary depending on existing connection methods.

Q: What is the moisture sensitivity rating for both parts?

A: Both components maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.