KB26CKW01-FF Equivalent & Substitute Parts

Part Overview

The KB26CKW01-FF is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with On-On switching function. This component is rated for 1A at 125V AC and 30V DC, with a green round button actuator and solder lug termination. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

KB26CKW01-FF

NKK SwitchesIn Stock: 1169KB26CKW01-FF Datasheet

Current PartRFQ

YB26CKW01-FB

NKK SwitchesIn Stock: 993YB26CKW01-FB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB26CKW01-FF is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration (DPDT)
• Switch function (On-On)
• Voltage ratings (125V AC minimum, 30V DC minimum)
• Mounting type (Panel Mount, Front)
• Actuator type (Round, Button)
• Operating temperature range (-25°C to 70°C minimum)
• RoHS compliance status

Allowable Variation Parameters:

• Current rating (substitute must meet or exceed 1A requirement)
• Mechanical and electrical life cycles (substitute may exceed specified values)
• Panel cutout diameter (physical accommodation required in existing designs)
• Termination style (may differ if electrical connection is compatible)
• Actuator color (functional equivalence maintained)

The YB26CKW01-FB qualifies as a substitute because it maintains all mandatory compatibility parameters while exceeding performance specifications in current rating (3A vs. 1A), mechanical life (200,000 vs. 100,000 cycles), and electrical life (100,000 vs. 50,000 cycles).

Parameter Comparison

Engineering Selection Recommendations

The YB26CKW01-FB is an active product substitute for the obsolete KB26CKW01-FF. Both components maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility.

Key Considerations for Selection:

The substitute part provides enhanced electrical performance with 3A current capacity compared to the original 1A rating, and doubled mechanical and electrical life cycles. These improvements support extended operational reliability in replacement applications.

Physical integration requires accommodation of the larger 16.00mm panel cutout diameter versus the original 12.30mm specification. Existing panel designs may require modification to accept the substitute component.

Termination compatibility differs between the parts. The original KB26CKW01-FF uses solder lug termination, while the YB26CKW01-FB provides both solder and quick connect options. Circuit board or wiring harness adaptation may be necessary depending on the existing connection method.

Both components are manufactured by NKK Switches and share identical voltage ratings and operating temperature specifications, ensuring functional equivalence within the specified environmental parameters.

Frequently Asked Questions (FAQ)

Q: Can the YB26CKW01-FB directly replace the KB26CKW01-FF without circuit modification?

A: Electrical substitution is valid because both components maintain identical DPDT On-On circuit configuration, 125V AC and 30V DC voltage ratings, and operating temperature range. However, physical integration requires panel cutout enlargement from 12.30mm to 16.00mm diameter, and termination method adaptation from solder lug to solder/quick connect options.

Q: What is the significance of the higher current rating on the substitute part?

A: The YB26CKW01-FB is rated for 3A versus the original 1A specification. This higher rating provides design margin and supports applications with increased current demands. The substitute remains fully compatible with circuits designed for 1A operation.

Q: Are there compliance differences between the two parts?

A: Both components maintain identical ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). No compliance barriers exist for substitution from a regulatory perspective.

Q: Why does the substitute part have a larger panel cutout diameter?

A: The YB26CKW01-FB series uses a 16.00mm panel cutout compared to the KB26CKW01-FF 12.30mm specification. This dimensional difference reflects the mechanical design of the YB series. Existing panel designs must be evaluated for accommodation of this larger opening.

Q: What termination options are available with the substitute part?

A: The YB26CKW01-FB provides both solder and quick connect (0.110" / 2.8mm) termination options. The original KB26CKW01-FF uses solder lug termination only. Circuit board or harness design must accommodate the available termination methods.

Q: How do the mechanical and electrical life specifications compare?

A: The substitute part YB26CKW01-FB provides 200,000 mechanical cycles and 100,000 electrical cycles, compared to the original 100,000 mechanical and 50,000 electrical cycles. The enhanced durability supports extended service life in high-cycle applications.