KB25CKW01/U Equivalent & Substitute Parts

Part Overview

The KB25CKW01/U is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with On-Momentary switch function. This component is rated for 1A at 125V AC and 30V DC, with a panel-mount front configuration and solder lug termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications where continued component availability is required.

Substiute Parts

KB25CKW01/U

NKK SwitchesIn Stock: 795KB25CKW01/U Datasheet

Current PartRFQ

YB25CKW01/U

NKK SwitchesIn Stock: 905YB25CKW01/U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25CKW01/U is determined by the following critical parameters:

Mandatory Matching Parameters:

• Circuit Configuration: DPDT
• Switch Function: On-Momentary
• Voltage Rating - AC: 125V minimum
• Voltage Rating - DC: 30V minimum
• Mounting Type: Panel Mount, Front
• Actuator Type: Plunger for Cap
• Operating Temperature Range: -25°C to 70°C minimum

Allowable Variation Parameters:

• Current Rating: May exceed 1A (higher current rating is acceptable for lower-current applications)
• Mechanical Life: May exceed 100,000 cycles
• Electrical Life: May exceed 50,000 cycles
• Panel Cutout Dimensions: Larger diameter acceptable if mechanical integration permits
• Termination Style: Alternative termination acceptable if circuit integration is compatible

The YB25CKW01/U meets all mandatory matching criteria while exceeding performance specifications in current rating, mechanical life, and electrical life. However, termination style and panel cutout dimensions differ and must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The YB25CKW01/U is functionally equivalent to the KB25CKW01/U for applications requiring DPDT On-Momentary pushbutton switch operation at 125V AC and 30V DC. The substitute part offers superior performance characteristics with 3A current rating, extended mechanical life (1,000,000 cycles), and extended electrical life (100,000 cycles).

Integration Considerations:

The YB25CKW01/U features a larger panel cutout diameter (16.00mm versus 12.30mm), requiring mechanical panel modification if direct replacement in existing enclosures is required. The termination style differs from the original solder lug configuration, incorporating solder and quick-connect 0.110" (2.8mm) terminals, necessitating circuit board layout or wiring harness adaptation.

Both components maintain identical operating temperature range (-25°C to 70°C) and moisture sensitivity level (MSL 1 - Unlimited), ensuring environmental compatibility. The substitute part maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can the YB25CKW01/U directly replace the KB25CKW01/U without modification?

A: Functional substitution is possible; however, mechanical and electrical integration modifications are required. The larger panel cutout diameter (16.00mm versus 12.30mm) requires panel modification. The different termination style (solder/quick-connect versus solder lug) requires circuit board or wiring harness adaptation.

Q: What are the key compatibility criteria for substitution?

A: The substitute part must maintain DPDT circuit configuration, On-Momentary switch function, 125V AC and 30V DC voltage ratings, panel-mount front configuration, and plunger actuator type. Current rating, mechanical life, and electrical life may exceed original specifications.

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

A: No. A higher current rating is acceptable for applications originally designed for lower current. The substitute part can safely handle the original application's current requirements while providing additional capacity margin.

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

A: Both components maintain identical operating temperature range (-25°C to 70°C) and moisture sensitivity level (MSL 1 - Unlimited). The KB25CKW01/U is specified as ROHS3 compliant; RoHS compliance status for the YB25CKW01/U is not provided in available data.

Q: What mechanical modifications are necessary for panel integration?

A: The panel cutout diameter must be enlarged from 12.30mm to 16.00mm to accommodate the YB25CKW01/U. Verify that panel material thickness and surrounding component spacing permit this modification without compromising structural integrity or electrical isolation.

Q: How do the termination differences affect circuit integration?

A: The KB25CKW01/U uses solder lug termination for direct PCB mounting. The YB25CKW01/U uses solder and quick-connect 0.110" (2.8mm) terminals, requiring either PCB pad redesign or external wiring harness integration. Verify connector compatibility with existing circuit board layout or harness specifications.