KB25CKW01-28-EB Equivalent & Substitute Parts

Part Overview

The KB25CKW01-28-EB 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 28VAC incandescent yellow illumination. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where similar electrical and mechanical characteristics are required.

Substiute Parts

KB25CKW01-28-EB

NKK SwitchesIn Stock: 1167KB25CKW01-28-EB Datasheet

Current PartRFQ

YB25CKW01-5D24-JD

NKK SwitchesIn Stock: 1131YB25CKW01-5D24-JD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25CKW01-28-EB is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration (DPDT)
• Switch function (On-Mom)
• Mounting type (Panel Mount, Front)
• Actuator type (Round, Button)
• Voltage rating compatibility (125V AC minimum)
• Operating temperature range (-25°C to 50°C)
• RoHS compliance status

Allowable Variation Parameters:

• Current rating (substitute must meet or exceed 1A requirement)
• Illumination type and color (may differ from incandescent yellow)
• Illumination voltage (may differ from 28VAC)
• Panel cutout diameter (mechanical accommodation required)
• Mechanical and electrical life ratings (substitute may exceed original specifications)
• Termination style (may differ from solder lug)

The YB25CKW01-5D24-JD qualifies as a substitute based on matching core electrical circuit requirements, mounting configuration, and environmental specifications while offering enhanced current capacity (3A), extended mechanical life (1,000,000 cycles), and modern LED illumination technology.

Parameter Comparison

Engineering Selection Recommendations

The YB25CKW01-5D24-JD is an active product from the same manufacturer, providing functional equivalence to the obsolete KB25CKW01-28-EB. Both components maintain ROHS3 compliance and identical voltage ratings across AC and DC specifications. The substitute offers superior reliability metrics with extended mechanical life (1,000,000 cycles versus 100,000 cycles) and doubled electrical life (100,000 cycles versus 50,000 cycles).

Selection of the YB25CKW01-5D24-JD requires accommodation of the following differences:

• Panel cutout diameter increases from 12.30mm to 16.00mm, necessitating mechanical panel modification
• Illumination transitions from 28VAC incandescent yellow to 24VDC LED amber, requiring electrical circuit adjustment
• Termination configuration changes from solder lug to solder with quick connect option, affecting wiring methodology

The substitute's 3A current rating exceeds the original 1A specification, providing additional design margin for applications within the 125V AC / 30V DC envelope.

Frequently Asked Questions (FAQ)

Q: Can the YB25CKW01-5D24-JD directly replace the KB25CKW01-28-EB without modifications?

A: Direct mechanical and electrical substitution is not possible. The panel cutout diameter differs (16.00mm versus 12.30mm), and the illumination voltage changes from 28VAC to 24VDC. Panel drilling and electrical circuit modifications are required.

Q: What are the critical compatibility parameters for this substitution?

A: The substitute maintains identical DPDT circuit configuration, On-Mom switch function, 125V AC / 30V DC voltage ratings, and -25°C to 50°C operating temperature range. These parameters define functional equivalence for control circuit applications.

Q: Does the increased current rating (3A versus 1A) affect compatibility?

A: The higher current rating of the substitute does not compromise compatibility. It provides additional capacity margin and is suitable for applications originally designed for 1A operation. The 125V AC and 30V DC voltage specifications remain unchanged.

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

A: LED illumination (24VDC) replaces incandescent (28VAC), requiring adjustment of the illumination power supply circuit. LED operation provides extended service life and reduced power consumption compared to incandescent technology.

Q: Are both components RoHS compliant?

A: Yes, both the KB25CKW01-28-EB and YB25CKW01-5D24-JD are ROHS3 compliant, meeting environmental and material restriction requirements.

Q: What termination options are available with the substitute?

A: The YB25CKW01-5D24-JD provides dual termination capability: solder connection and quick connect terminals (0.110" / 2.8mm), offering flexibility in wiring methodology compared to the original solder lug configuration.