KB26SKW01-12-FF Equivalent & Substitute Parts

Part Overview

The KB26SKW01-12-FF 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 green illumination powered at 12 VAC. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

KB26SKW01-12-FF

NKK SwitchesIn Stock: 896KB26SKW01-12-FF Datasheet

Current PartRFQ

YB26SKW01-5F12-JF

NKK SwitchesIn Stock: 1039YB26SKW01-5F12-JF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB26SKW01-12-FF is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must remain DPDT
• Switch function must be On-On
• Voltage ratings must meet or exceed 125V AC and 30V DC
• Current rating must support the application load (minimum 1A)

Mechanical & Physical Compatibility:

• Mounting type must be Panel Mount, Front
• Panel cutout dimensions must accommodate the physical form factor
• Actuator type must be Square Button
• Termination style must be compatible with existing circuit board or wiring

Illumination Specifications:

• Illumination color must be Green
• Illumination voltage must be compatible with system power supply

The YB26SKW01-5F12-JF qualifies as a substitute based on matching DPDT circuit configuration, On-On function, panel-mount front orientation, and green illumination. The substitute provides enhanced electrical performance (3A current rating, 200,000 mechanical cycles) and updated illumination technology (LED vs. incandescent).

Parameter Comparison

Engineering Selection Recommendations

The YB26SKW01-5F12-JF is an active product from the same manufacturer, providing functional equivalence to the obsolete KB26SKW01-12-FF. Selection of this substitute is supported by:

Electrical Equivalence: Both parts maintain DPDT configuration with On-On switching function and identical AC/DC voltage ratings, ensuring direct functional replacement in circuits designed for the original part.

Enhanced Performance: The substitute offers superior electrical life (100,000 cycles vs. 50,000) and mechanical life (200,000 cycles vs. 100,000), providing extended service intervals in applications requiring high-cycle operation.

Compliance Status: The main part is ROHS3 compliant. The substitute's compliance status is not specified in available data; verification with the manufacturer is necessary for applications with mandatory RoHS requirements.

Physical Integration Considerations: The substitute requires a larger panel cutout (16.00 mm vs. 12.30 mm diameter). Panel modifications or redesign may be necessary for direct mechanical replacement. Termination style differences (Solder Lug vs. Solder/Quick Connect) require circuit board or wiring adaptation.

Illumination Technology Transition: The substitute uses LED illumination powered at 12 VDC, replacing the incandescent 12 VAC illumination of the original part. Power supply compatibility must be confirmed before implementation.

Frequently Asked Questions (FAQ)

Q: Can the YB26SKW01-5F12-JF be used as a direct replacement for the KB26SKW01-12-FF?

A: Electrical and functional compatibility is confirmed. Physical integration requires panel cutout enlargement from 12.30 mm to 16.00 mm diameter. Termination style differences necessitate circuit board or wiring modifications. Illumination power supply must be changed from 12 VAC to 12 VDC.

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

A: Primary differences include current rating (1A vs. 3A), illumination technology (incandescent vs. LED), illumination voltage (12 VAC vs. 12 VDC), panel cutout size (12.30 mm vs. 16.00 mm), termination style (Solder Lug vs. Solder/Quick Connect), and operational life ratings (mechanical and electrical cycles doubled in the substitute).

Q: Are both switches rated for the same voltage and current applications?

A: Both switches are rated for 125V AC and 30V DC. The substitute has a higher current rating (3A vs. 1A), making it suitable for applications requiring the original 1A rating and those requiring up to 3A.

Q: What panel modifications are required for the substitute part?

A: The panel cutout diameter must be increased from 12.30 mm to 16.00 mm to accommodate the larger form factor of the YB26SKW01-5F12-JF.

Q: Is the illumination voltage change from 12 VAC to 12 VDC a compatibility issue?

A: The voltage source must be confirmed as 12 VDC for the substitute part. If the original system uses 12 VAC illumination power, the power supply must be modified or replaced to provide 12 VDC.

Q: What is the impact of the different termination styles?

A: The original part uses Solder Lug termination, while the substitute offers Solder and Quick Connect (0.110" / 2.8mm) options. Circuit board or wiring connections must be adapted to accommodate the substitute's termination configuration.