KB26CKW01-12-EB Equivalent & Substitute Parts

Part Overview

The KB26CKW01-12-EB 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 yellow illumination powered at 12 VAC. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new designs requiring similar electrical and mechanical characteristics.

Substiute Parts

KB26CKW01-12-EB

NKK SwitchesIn Stock: 1026KB26CKW01-12-EB Datasheet

Current PartRFQ

YB26CKW01-5D12-JD

NKK SwitchesIn Stock: 870YB26CKW01-5D12-JD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB26CKW01-12-EB is determined by the following critical parameters:

Electrical Compatibility Requirements:

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

Mechanical & Physical Compatibility:

• Mounting type must be Panel Mount, Front
• Actuator type must be Round, Button configuration
• Panel cutout dimensions must accommodate the physical installation envelope

Illumination Characteristics:

• Illumination type and color may vary (incandescent yellow to LED amber)
• Illumination voltage may differ if the power supply architecture permits (12 VAC to 2 VDC)

Environmental & Lifecycle Parameters:

• Operating temperature range must encompass -25°C ~ 50°C
• Mechanical and electrical life ratings should meet or exceed original specifications
• RoHS and REACH compliance status must be maintained

The YB26CKW01-5D12-JD qualifies as a substitute based on these criteria, with noted differences in current capacity, illumination technology, and termination style.

Parameter Comparison

Engineering Selection Recommendations

The YB26CKW01-5D12-JD is an active product from NKK Switches and serves as a functional substitute for the obsolete KB26CKW01-12-EB. Both components maintain identical DPDT On-On circuit configuration, voltage ratings, and operating temperature specifications.

Advantages of the YB26CKW01-5D12-JD:

• Active product status ensures long-term availability and supply chain continuity
• Higher current rating (3A vs. 1A) provides additional design margin for applications within the original 1A specification
• Extended mechanical life (200,000 vs. 100,000 cycles) and electrical life (100,000 vs. 50,000 cycles) improve component longevity
• LED illumination (amber) offers lower power consumption compared to incandescent yellow illumination

Design Considerations:

• Panel cutout diameter increases from 12.30mm to 16.00mm, requiring mechanical redesign of the mounting interface
• Illumination voltage changes from 12 VAC to 2 VDC, necessitating modification of the illumination power supply circuit
• Termination style changes from Solder Lug to Solder with Quick Connect options, affecting PCB layout and assembly procedures
• Compliance certifications should be verified with the manufacturer for the substitute part in applications requiring specific regulatory approvals

Frequently Asked Questions (FAQ)

Q: Can the YB26CKW01-5D12-JD directly replace the KB26CKW01-12-EB without modifications?

A: Direct replacement is not possible without mechanical and electrical modifications. The panel cutout diameter differs (16.00mm vs. 12.30mm), requiring enlargement of the mounting hole. The illumination voltage differs (2 VDC vs. 12 VAC), requiring a separate low-voltage power supply for the LED indicator. Termination style changes necessitate PCB layout adjustments.

Q: Are the electrical switching characteristics identical between these parts?

A: Yes. Both components feature DPDT On-On configuration with identical voltage ratings (125V AC, 30V DC) and operating temperature range (-25°C ~ 50°C). The substitute part has a higher current rating (3A vs. 1A), which is compatible with applications designed for the original 1A specification.

Q: What is the impact of changing from incandescent to LED illumination?

A: LED illumination reduces power consumption and extends operational life. However, the illumination voltage changes from 12 VAC to 2 VDC, requiring a dedicated low-voltage power supply circuit. The color changes from yellow to amber, which may affect visual indication in the application.

Q: Does the larger panel cutout diameter affect compatibility?

A: Yes. The YB26CKW01-5D12-JD requires a 16.00mm circular cutout compared to 12.30mm for the KB26CKW01-12-EB. Existing panel designs must be mechanically modified to accommodate the larger diameter. This is a critical consideration for retrofit applications.

Q: Are there compliance or certification differences between these parts?

A: The KB26CKW01-12-EB is ROHS3 compliant. Compliance status for the YB26CKW01-5D12-JD should be confirmed with the manufacturer for applications requiring specific regulatory certifications.

Q: What is the mechanical life advantage of the substitute part?

A: The YB26CKW01-5D12-JD offers 200,000 mechanical cycles compared to 100,000 cycles for the KB26CKW01-12-EB, representing a 2x improvement in switch durability. Electrical life also doubles from 50,000 to 100,000 cycles, extending component service life in high-cycle applications.