KB25NKG01 Equivalent & Substitute Parts

Part Overview

The KB25NKG01 is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with a 0.4VA current rating at 28V. This component is designed for panel mount, snap-in applications with a plunger actuator and solder lug termination. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

KB25NKG01

NKK SwitchesIn Stock: 775KB25NKG01 Datasheet

Current PartRFQ

YB25MKG01

NKK SwitchesIn Stock: 1076YB25MKG01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB25NKG01 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: DPDT
• Switch function: On-Mom (Momentary)
• Current rating: 0.4VA (AC/DC)
• Voltage rating: 28V (AC and DC)
• Mounting type: Panel Mount, Snap-In
• Actuator type: Plunger for Cap
• Operating temperature range: -25°C to 70°C

Allowable Variations:

• Termination style (Solder Lug vs. Solder Quick Connect)
• Panel cutout dimensions (mechanical accommodation required)
• Mechanical life rating (higher values acceptable)
• Product status (Active preferred over Obsolete)
• Packaging format (Bulk vs. standard)

The YB25MKG01 meets all mandatory matching parameters and represents a direct functional equivalent with enhanced mechanical durability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The YB25MKG01 is the designated substitute for the obsolete KB25NKG01. Selection is based on the following engineering criteria:

Functional Equivalence: Both components share identical electrical specifications (DPDT, 0.4VA, 28V AC/DC, On-Mom function) and mechanical mounting requirements (panel mount, snap-in, plunger actuator).

Product Status: The YB25MKG01 maintains active manufacturing status with NKK Switches, ensuring long-term availability and supply chain continuity. The KB25NKG01 obsolete status creates sourcing risk for new applications and ongoing production.

Regulatory Compliance: Both components meet ROHS3 and REACH requirements, maintaining compliance with current environmental and hazardous substance regulations.

Enhanced Durability: The YB25MKG01 provides 1,000,000 mechanical cycles versus 100,000 cycles for the KB25NKG01, offering superior longevity in high-cycle applications.

Implementation Considerations: Panel cutout diameter increases from 12.30mm to 16.00mm, requiring mechanical panel modification. Termination style changes from solder lug to quick connect (0.110" / 2.8mm), necessitating PCB layout adjustment. These modifications are standard engineering accommodations for component substitution.

Frequently Asked Questions (FAQ)

Q: Can YB25MKG01 directly replace KB25NKG01 without any modifications?

A: Electrical and functional replacement is direct. Mechanical integration requires two modifications: panel cutout enlargement from 12.30mm to 16.00mm diameter, and PCB termination accommodation for quick connect terminals instead of solder lugs.

Q: What are the key electrical parameters that define substitution compatibility?

A: DPDT circuit configuration, 0.4VA current rating, 28V AC/DC voltage rating, and On-Mom switch function are the critical electrical parameters. Any deviation in these specifications disqualifies a component as a substitute.

Q: Why does the YB25MKG01 have a larger panel cutout diameter?

A: The 16.00mm diameter for YB25MKG01 versus 12.30mm for KB25NKG01 reflects mechanical design differences between the KB and YB series. This is a physical dimension change requiring panel modification but does not affect electrical performance.

Q: Is the quick connect termination style compatible with existing solder lug PCB layouts?

A: No. Quick connect terminals (0.110" / 2.8mm) require dedicated PCB pad design. Existing solder lug layouts must be redesigned to accommodate the quick connect interface.

Q: What is the significance of the 10x increase in mechanical life rating?

A: The YB25MKG01 mechanical life of 1,000,000 cycles versus 100,000 cycles for KB25NKG01 indicates enhanced internal mechanism durability. This provides extended service life in high-frequency switching applications.

Q: Are there any compliance or certification differences between these components?

A: Both components maintain identical ROHS3 and REACH compliance status. No regulatory differences exist between KB25NKG01 and YB25MKG01.

Q: What inventory status should influence component selection?

A: YB25MKG01 maintains active production status with 990 pieces in stock. KB25NKG01 is obsolete with limited remaining inventory (739 pieces). For new designs and ongoing production, YB25MKG01 is the only viable long-term option.