KB25SKW01-12-FF Equivalent & Substitute Parts

Part Overview

The KB25SKW01-12-FF is a DPDT pushbutton switch manufactured by NKK Switches, designed for panel-mount applications with illuminated front actuation. This component operates at 1A, 125V AC with a green incandescent illumination at 12 VAC nominal. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

KB25SKW01-12-FF

NKK SwitchesIn Stock: 1213KB25SKW01-12-FF Datasheet

Current PartRFQ

YB25SKW01-5F12-JF

NKK SwitchesIn Stock: 815YB25SKW01-5F12-JF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The YB25SKW01-5F12-JF qualifies as a substitute for the KB25SKW01-12-FF based on the following allowed electrical and mechanical parameters:

Matching Parameters:

• DPDT circuit configuration maintained
• On-Mom switch function preserved
• Panel mount, front actuation design
• 125V AC voltage rating compatibility
• 30V DC voltage rating compatibility
• Green illumination color
• 12V illumination voltage (VAC to VDC conversion via LED technology)
• Operating temperature range identical
• ROHS3 compliance and REACH unaffected status
• Solder termination family (upgraded to Quick Connect option)

Parameter Differences Affecting Substitution:

• Current rating increased from 1A to 3A (upward compatible)
• Panel cutout diameter increased from 12.30mm to 16.00mm (requires panel modification)
• Illumination technology changed from incandescent to LED
• Mechanical life upgraded from 100,000 to 1,000,000 cycles
• Electrical life upgraded from 50,000 to 100,000 cycles
• Termination style expanded to include Quick Connect - 0.110" (2.8mm)

Parameter Comparison

Engineering Selection Recommendations

The YB25SKW01-5F12-JF is an active product with current manufacturing support, whereas the KB25SKW01-12-FF is obsolete. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system replacements.

The YB25SKW01-5F12-JF provides enhanced electrical performance through increased current capacity (3A versus 1A) and significantly extended mechanical and electrical life ratings. The LED illumination technology replaces incandescent operation, requiring illumination voltage adjustment from 12 VAC to 12 VDC. Panel integration requires accommodation of the larger 16.00mm cutout diameter compared to the original 12.30mm specification. Termination options are expanded to include Quick Connect configurations alongside solder attachment.

Selection of the YB25SKW01-5F12-JF is appropriate for applications where panel cutout modification is feasible and illumination voltage supply can be adjusted to DC operation. The increased current rating and extended lifecycle ratings provide design margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the YB25SKW01-5F12-JF directly replace the KB25SKW01-12-FF without panel modification?

A: No. The YB25SKW01-5F12-JF requires a 16.00mm panel cutout diameter, whereas the KB25SKW01-12-FF uses 12.30mm. Panel drilling or cutout enlargement is necessary for mechanical installation.

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

A: The illumination voltage changes from 12 VAC to 12 VDC. Existing AC illumination circuits require conversion to DC supply. LED technology provides extended operational life and reduced power consumption compared to incandescent operation.

Q: Are the electrical ratings compatible between these two switches?

A: Both switches maintain 125V AC and 30V DC voltage ratings. The YB25SKW01-5F12-JF supports higher current (3A versus 1A), making it suitable for applications requiring increased current capacity while remaining compatible with lower-current designs.

Q: What are the termination options for the YB25SKW01-5F12-JF?

A: The YB25SKW01-5F12-JF offers both solder and Quick Connect - 0.110" (2.8mm) termination styles, providing flexibility for different circuit board attachment methods. The original KB25SKW01-12-FF uses solder lug termination only.

Q: Is the YB25SKW01-5F12-JF suitable for applications with strict lifecycle requirements?

A: Yes. The YB25SKW01-5F12-JF provides 1,000,000 mechanical cycles and 100,000 electrical cycles, compared to 100,000 mechanical cycles and 50,000 electrical cycles for the KB25SKW01-12-FF, supporting extended-life applications.

Q: Do both switches maintain the same operating temperature range?

A: Yes. Both the KB25SKW01-12-FF and YB25SKW01-5F12-JF operate across -25°C to 50°C, ensuring thermal compatibility for equivalent environmental applications.