KB25MKG01-FF Equivalent & Substitute Parts

Part Overview

The KB25MKG01-FF is a pushbutton switch manufactured by NKK Switches, featuring a DPDT (Double Pole Double Throw) circuit configuration with On-Momentary switch function. This component is rated for 0.4VA at 28V AC/DC and is designed for panel mount, snap-in installation with a circular 12.30mm diameter cutout. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design applications where equivalent functionality is required.

Substiute Parts

KB25MKG01-FF

NKK SwitchesIn Stock: 1154KB25MKG01-FF Datasheet

Current PartRFQ

YB25MKW01-FB

NKK SwitchesIn Stock: 825YB25MKW01-FB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB25MKG01-FF is determined by the following critical parameters:

Circuit Configuration: Both the main part and substitute must maintain DPDT circuit topology to preserve electrical switching capability.

Switch Function: On-Momentary operation must be preserved to ensure functional equivalence in applications requiring momentary contact closure.

Mounting Interface: Panel mount, snap-in installation must be maintained for mechanical compatibility with existing panel cutouts and installation procedures.

Actuator Type: Round button actuator configuration must be consistent for ergonomic and mechanical fit requirements.

Electrical Ratings: The substitute part must support the application voltage and current requirements. The KB25MKG01-FF operates at 28V with 0.4VA capacity. Substitute parts with higher voltage and current ratings remain compatible with this application, as they operate within the specified electrical envelope.

Termination Compatibility: While the main part uses solder lug termination, substitute parts with alternative termination styles (such as quick connect) may be acceptable depending on circuit board design and assembly capabilities.

Environmental Compliance: RoHS3 compliance and REACH unaffected status are maintained across both parts.

The YB25MKW01-FB meets these substitution criteria while offering enhanced mechanical durability and higher electrical capacity ratings.

Parameter Comparison

Engineering Selection Recommendations

The YB25MKW01-FB is a direct functional substitute for the KB25MKG01-FF based on matching circuit topology, switch function, mounting interface, and actuator configuration. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The substitute part is classified as active product status, providing assured long-term availability and supply chain continuity compared to the obsolete KB25MKG01-FF. The YB25MKW01-FB offers enhanced mechanical durability with 1,000,000 cycle mechanical life versus 100,000 cycles in the original part, supporting extended service life in high-cycle applications.

The primary design consideration is panel cutout diameter: the substitute requires a 16.00mm circular opening compared to 12.30mm for the original part. Panel modifications or redesign may be necessary for direct mechanical replacement. Termination style differs, with the substitute offering both solder and quick connect options, requiring evaluation against existing circuit board assembly capabilities.

Electrical ratings of the substitute exceed application requirements, with 125V AC and 30V DC capacity supporting the 28V operating specification of the original design. Current capacity of 3A accommodates the 0.4VA requirement with substantial margin.

Frequently Asked Questions (FAQ)

Q: Can the YB25MKW01-FB directly replace the KB25MKG01-FF without circuit modifications?

A: Electrical and functional compatibility is confirmed. The substitute maintains DPDT circuit configuration, On-Momentary switch function, and equivalent operating temperature range. However, mechanical panel integration requires evaluation due to increased cutout diameter (16.00mm versus 12.30mm). Termination style differences must be assessed against circuit board design.

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

A: The substitute offers higher electrical ratings (3A at 125V AC versus 0.4VA at 28V), enhanced mechanical life (1,000,000 cycles versus 100,000 cycles), and active product status ensuring availability. Panel cutout diameter and termination options differ, requiring design consideration.

Q: Is the larger panel cutout diameter a compatibility issue?

A: The 16.00mm cutout diameter of the YB25MKW01-FB exceeds the 12.30mm requirement of the KB25MKG01-FF. Existing panel openings must be enlarged or redesigned to accommodate the substitute. This is a mechanical integration consideration, not an electrical compatibility issue.

Q: Are both parts RoHS compliant?

A: Yes, both the KB25MKG01-FF and YB25MKW01-FB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the substitute's higher current and voltage ratings?

A: The YB25MKW01-FB is rated for 3A at 125V AC and 30V DC, exceeding the 0.4VA at 28V specification of the original part. This provides operational margin and supports applications with higher electrical demands while remaining compatible with the original 28V design specification.

Q: Does the substitute's quick connect termination option affect compatibility?

A: The YB25MKW01-FB offers both solder and quick connect termination options. Solder termination maintains compatibility with existing circuit board designs. Quick connect termination requires compatible receptacles and may simplify assembly in new designs.