KB26SKW01-28-JB Equivalent & Substitute Parts

Part Overview

The KB26SKW01-28-JB 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 30V DC, with incandescent white illumination at 28VAC nominal voltage. The part 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

KB26SKW01-28-JB

NKK SwitchesIn Stock: 956KB26SKW01-28-JB Datasheet

Current PartRFQ

YB26SKW01-5D24-JB

NKK SwitchesIn Stock: 903YB26SKW01-5D24-JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB26SKW01-28-JB 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

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount, Front
• Actuator type must be Square, Button
• Operating temperature range must encompass -25°C to 50°C

Illumination Compatibility:

• Illumination type and voltage must be compatible with system power supply architecture
• Color consistency is application-dependent

Environmental & Compliance Requirements:

• RoHS3 compliance required
• MSL rating of 1 (Unlimited) acceptable

The substitute part YB26SKW01-5D24-JB meets these core substitution criteria while introducing enhanced performance characteristics in current rating, mechanical life, and electrical life.

Parameter Comparison

Engineering Selection Recommendations

The YB26SKW01-5D24-JB serves as a direct functional substitute for the obsolete KB26SKW01-28-JB. Both components maintain identical DPDT circuit configuration, On-On switch function, and voltage ratings of 125V AC and 30V DC. Both are ROHS3 compliant and operate across the same temperature range.

The substitute part offers enhanced performance with a 3A current rating versus the original 1A specification, supporting higher-load applications. Mechanical and electrical life ratings are doubled, providing extended operational durability. The active product status of the YB26SKW01-5D24-JB ensures ongoing availability and manufacturer support.

Design integration requires consideration of three key differences: panel cutout diameter increases from 12.30mm to 16.00mm, illumination transitions from incandescent white at 28VAC to LED amber at 24VDC, and termination style changes from solder lug to solder with quick connect options. These differences necessitate mechanical panel redesign and electrical power supply architecture evaluation.

Frequently Asked Questions (FAQ)

Q: Can the YB26SKW01-5D24-JB directly replace the KB26SKW01-28-JB without modifications?

A: Electrical and functional replacement is possible. However, mechanical panel modifications are required due to the larger 16.00mm cutout diameter versus the original 12.30mm specification. Illumination power supply architecture must be adapted from 28VAC incandescent to 24VDC LED operation.

Q: What are the implications of the increased current rating from 1A to 3A?

A: The 3A rating of the substitute part provides design margin for higher-load switching applications. Existing 1A applications remain fully compatible, as the substitute accommodates lower current draws without performance degradation.

Q: How do the mechanical life differences affect component selection?

A: The substitute part provides 200,000 mechanical cycles versus the original 100,000 cycles. This extended life rating supports applications requiring higher cycle counts and longer operational intervals between maintenance.

Q: What considerations apply to the illumination change from incandescent to LED?

A: LED illumination at 24VDC offers improved energy efficiency and longer operational life compared to incandescent white at 28VAC. System power supply architecture must provide 24VDC illumination voltage. Color perception changes from white to amber, which may affect operator interface consistency.

Q: Are panel cutout modifications mandatory for substitution?

A: Yes. The 16.00mm cutout diameter of the substitute part requires mechanical panel redesign. The original 12.30mm cutout is incompatible with the larger substitute component housing.

Q: Do both parts maintain equivalent compliance certifications?

A: Both components are ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH unaffected status. Compliance requirements are maintained across the substitution.