KB25RKG01 Equivalent & Substitute Parts

Part Overview

The KB25RKG01 is a pushbutton switch manufactured by NKK Switches, configured as a Double Pole Double Throw (DPDT) device with On-Momentary switch function. It is rated for 0.4VA at 28V AC/DC and features panel mount, front installation with solder lug termination. The KB25RKG01 is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

KB25RKG01

NKK SwitchesIn Stock: 870KB25RKG01 Datasheet

Current PartRFQ

YB25RKG01

NKK SwitchesIn Stock: 1148YB25RKG01 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB25RKG01 is determined by strict equivalence across the following electrical and mechanical parameters:

Circuit configuration must remain DPDT to maintain switching topology compatibility. Switch function must be On-Momentary to preserve operational behavior. Voltage ratings must match or exceed 28V AC/DC to ensure safe operation within the original design envelope. Current rating of 0.4VA must be maintained or exceeded. Mounting type must be Panel Mount, Front to ensure physical compatibility with existing panel cutouts and installation geometry. Actuator type must be Plunger for Cap to maintain user interface consistency.

The YB25RKG01 satisfies these core electrical and mechanical requirements. However, differences exist in termination style, panel cutout diameter, mechanical life rating, and product status that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The YB25RKG01 is a direct functional equivalent to the KB25RKG01 for applications requiring DPDT On-Momentary pushbutton switch operation at 28V with 0.4VA current capacity. Both components maintain ROHS3 compliance and identical electrical specifications.

Selection of YB25RKG01 as a substitute is supported by its active product status, ensuring long-term availability and supply chain continuity. The YB25RKG01 provides enhanced mechanical life rating of 1,000,000 cycles compared to 100,000 cycles in the KB25RKG01, offering improved durability for high-cycle applications.

Physical integration requires evaluation of panel cutout geometry. The YB25RKG01 requires a 16.00mm diameter circular cutout compared to 12.30mm for the KB25RKG01. Existing panel installations designed for the KB25RKG01 will require mechanical modification to accommodate the larger cutout diameter of the YB25RKG01.

Termination style differs between the two components. The KB25RKG01 uses solder lug termination, while the YB25RKG01 provides solder and quick connect 0.110" (2.8mm) termination options. Circuit board layout and wiring harness compatibility must be verified before substitution.

Frequently Asked Questions (FAQ)

Q: Can YB25RKG01 directly replace KB25RKG01 in existing assemblies?

A: Electrical substitution is valid. Mechanical integration requires verification of panel cutout diameter compatibility and termination style compatibility with existing circuit board or wiring harness design.

Q: What are the critical parameters that define substitution eligibility?

A: Circuit configuration (DPDT), switch function (On-Momentary), voltage rating (28V AC/DC), current rating (0.4VA), mounting type (Panel Mount, Front), and actuator type (Plunger for Cap) must match or exceed original specifications.

Q: Does the larger panel cutout diameter of YB25RKG01 affect electrical performance?

A: Panel cutout diameter is a mechanical installation parameter and does not affect electrical performance. It determines physical fit within the panel assembly.

Q: Are there compliance differences between KB25RKG01 and YB25RKG01?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance differences exist between the two parts.

Q: What is the significance of the 10x higher mechanical life rating in YB25RKG01?

A: The YB25RKG01 mechanical life of 1,000,000 cycles versus 100,000 cycles in KB25RKG01 indicates enhanced durability for applications requiring frequent actuator cycling. Electrical life remains equivalent at 100,000 cycles for both components.

Q: Can termination style differences be accommodated in the field?

A: Termination style conversion requires circuit board rework or harness modification. Direct pin-for-pin substitution is not possible without addressing termination compatibility.