KB25SKW01-JC Equivalent & Substitute Parts

Part Overview

The KB25SKW01-JC is a miniature pushbutton switch manufactured by NKK Switches, configured as a DPDT (Double Pole Double Throw) standard panel mount component with on-momentary switch function. This part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The KB series represents a legacy product line, making substitute identification critical for applications requiring component replacement or redesign.

Substiute Parts

KB25SKW01-JC

NKK SwitchesIn Stock: 696KB25SKW01-JC Datasheet

Current PartRFQ

YB25SKW01-JC

NKK SwitchesIn Stock: 878YB25SKW01-JC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25SKW01-JC is determined by the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: DPDT
• Switch function: On-Mom (On-Momentary)
• Mounting type: Panel Mount, Front
• Actuator type: Square, Button
• Actuator color: Clear (Red Filter/Diffuser)
• Operating temperature range: -25°C to 70°C
• RoHS compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Current rating: Equal to or greater than 1A
• Voltage ratings: Equal to or greater than specified values
• Mechanical life: Equal to or greater than 100,000 cycles
• Electrical life: Equal to or greater than 50,000 cycles
• Panel cutout diameter: Larger diameter acceptable with mechanical redesign
• Termination style: Alternative termination acceptable with circuit board redesign
• Moisture sensitivity level: MSL 1 required

The YB25SKW01-JC qualifies as a substitute based on superior electrical and mechanical performance characteristics while maintaining all mandatory functional parameters.

Parameter Comparison

Engineering Selection Recommendations

The YB25SKW01-JC is functionally equivalent to the KB25SKW01-JC for DPDT on-momentary pushbutton switch applications. The substitute part offers superior performance with 3A current rating (versus 1A), 1,000,000 cycle mechanical life (versus 100,000 cycles), and 100,000 cycle electrical life (versus 50,000 cycles).

Design Considerations:

The YB25SKW01-JC requires two modifications to the original KB25SKW01-JC design:

1. Panel Cutout Modification: The YB series requires a 16.00mm diameter circular cutout compared to the KB series 12.30mm diameter. Panel drilling or modification is necessary.

2. Termination Modification: The YB25SKW01-JC uses Solder and Quick Connect 0.110" (2.8mm) termination versus the KB series Solder Lug termination. Circuit board connection points must be redesigned accordingly.

The YB25SKW01-JC is currently in active production status, ensuring long-term availability and supply chain continuity. Both parts maintain identical operating temperature ranges (-25°C to 70°C) and identical voltage ratings (125V AC / 30V DC).

Frequently Asked Questions (FAQ)

Q: Can the YB25SKW01-JC directly replace the KB25SKW01-JC without modifications?

A: Functional replacement is possible, but physical modifications are required. The larger panel cutout diameter (16.00mm versus 12.30mm) requires panel drilling adjustment. The different termination style (Quick Connect versus Solder Lug) requires circuit board connection redesign. Electrical functionality is fully compatible.

Q: What is the primary reason for substitution?

A: The KB25SKW01-JC is classified as obsolete. The YB25SKW01-JC is an active production part from the same manufacturer, ensuring component availability and supply chain reliability.

Q: Are the electrical specifications compatible?

A: Yes. Both parts share identical circuit configuration (DPDT), switch function (On-Mom), voltage ratings (125V AC / 30V DC), and operating temperature range (-25°C to 70°C). The YB25SKW01-JC exceeds the current rating requirement (3A versus 1A) and provides superior mechanical and electrical life ratings.

Q: What modifications are required for panel integration?

A: The panel cutout diameter must be increased from 12.30mm to 16.00mm. This requires either drilling a larger hole or modifying the existing panel opening. The front panel mount configuration remains identical.

Q: What modifications are required for circuit board integration?

A: The termination style differs. The KB25SKW01-JC uses Solder Lug termination, while the YB25SKW01-JC uses Solder and Quick Connect 0.110" (2.8mm) termination. Circuit board connection points must be redesigned to accommodate the Quick Connect terminals.

Q: Is RoHS compliance maintained?

A: The KB25SKW01-JC is ROHS3 compliant. RoHS compliance status for the YB25SKW01-JC should be verified with the manufacturer or distributor documentation.

Q: What is the inventory status of these parts?

A: The KB25SKW01-JC has 672 pieces in stock (obsolete status). The YB25SKW01-JC has 822 pieces in stock (active production status).