KB26RKW01B-12-JB Equivalent & Substitute Parts

Part Overview

The KB26RKW01B-12-JB is a miniature illuminated pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with On-On switching function. This component is designed for panel-mount front installation with LED green illumination at 12 VDC nominal voltage. The part is currently listed as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

KB26RKW01B-12-JB

NKK SwitchesIn Stock: 1186KB26RKW01B-12-JB Datasheet

Current PartRFQ

YB26RKW01-5F12-JB

NKK SwitchesIn Stock: 1194YB26RKW01-5F12-JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the KB26RKW01B-12-JB is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be DPDT
• Switch function must be On-On
• Voltage ratings must meet or exceed: 125 V AC / 30 V DC
• Current rating must support the application load (minimum 1A AC/DC)
• Illumination must be LED green at 12 VDC nominal

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount, Front
• Actuator type must be Rectangular Button
• Operating temperature range must encompass -25°C ~ 50°C
• RoHS3 compliance required

Physical Installation Considerations:

• Panel cutout dimensions determine mechanical fit
• Termination style affects circuit board integration

The YB26RKW01-5F12-JB meets all electrical and mechanical compatibility criteria while offering enhanced performance characteristics in mechanical and electrical life ratings.

Parameter Comparison

Engineering Selection Recommendations

The YB26RKW01-5F12-JB is a functionally equivalent substitute for the obsolete KB26RKW01B-12-JB based on identical electrical specifications, circuit configuration, and environmental operating parameters. Both components are ROHS3 compliant and manufactured by NKK Switches.

The substitute component offers superior reliability characteristics with doubled mechanical life (200,000 cycles versus 100,000 cycles) and doubled electrical life (100,000 cycles versus 50,000 cycles). Current rating is increased to 3A, providing additional design margin for applications originally specified at 1A.

Two implementation considerations require attention:

Panel Cutout Dimension Difference: The substitute requires a 16.00mm diameter circular cutout compared to the original 12.30mm diameter. Existing panel installations will require mechanical modification or new panel fabrication.

Termination Style Difference: The original component uses Solder Lug termination, while the substitute provides both Solder and Quick Connect 0.110" (2.8mm) options. Circuit board connection points must be adapted accordingly.

The substitute component's active product status ensures ongoing availability and supply chain continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can YB26RKW01-5F12-JB be used as a direct drop-in replacement for KB26RKW01B-12-JB?

A: Electrical and functional compatibility is complete. Physical installation requires panel cutout modification from 12.30mm to 16.00mm diameter and circuit board termination adaptation from Solder Lug to Solder/Quick Connect configuration.

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

A: DPDT circuit configuration, On-On switch function, 125V AC / 30V DC voltage ratings, LED green illumination at 12 VDC, and current rating capability are the primary electrical criteria. The substitute meets or exceeds all original specifications.

Q: Does the higher current rating of the substitute component affect compatibility?

A: No. The 3A rating of the substitute provides additional design margin and is fully compatible with applications originally specified for 1A operation. The component will function correctly at lower current levels.

Q: Are there compliance or certification differences between the two components?

A: Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The substitute includes REACH Unaffected status. Compliance requirements are met by both parts.

Q: What is the significance of the different panel cutout dimensions?

A: Panel cutout size directly determines mechanical fit in existing panel installations. The 16.00mm diameter requirement of the substitute necessitates panel modification or replacement if retrofitting into existing equipment designed for the 12.30mm original component.

Q: How do the mechanical and electrical life ratings affect component selection?

A: The substitute's doubled mechanical life (200,000 cycles) and electrical life (100,000 cycles) indicate enhanced durability and longer service intervals. These ratings do not affect functional compatibility but provide improved reliability for extended-use applications.

Q: What termination options are available with the substitute component?

A: The YB26RKW01-5F12-JB provides both Solder and Quick Connect 0.110" (2.8mm) termination options, offering flexibility in circuit board integration compared to the original Solder Lug-only configuration.