KB26CKG01-5F-JB Equivalent & Substitute Parts

Part Overview

The KB26CKG01-5F-JB is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with integrated LED illumination. This component is designed for panel-mount applications with front-facing installation. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Manufacturer	NKK Switches
Circuit Configuration	DPDT
Switch Function	On-On
Current Rating	0.4VA (AC/DC)
Voltage Rating (AC/DC)	28V
Mounting Type	Panel Mount, Front
Illumination Type	LED, Green
Actuator Type	Round, Button
Termination Style	Solder Lug
Panel Cutout Dimensions	Circular - 12.30mm Dia
Operating Temperature Range	-25°C ~ 50°C
Mechanical Life	100,000 Cycles
Electrical Life	100,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the KB26CKG01-5F-JB is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Circuit configuration (DPDT)
Switch function (On-On)
Current rating (0.4VA AC/DC)
Voltage rating (28V AC/DC)
Illumination type and color (LED, Green)

Mechanical Compatibility Requirements:

Mounting type (Panel Mount, Front)
Actuator type (Round, Button)
Operating temperature range (-25°C ~ 50°C)

Regulatory & Environmental Requirements:

RoHS3 compliance
Moisture Sensitivity Level (MSL 1)

The YB26CKG01-5F-JB meets all electrical and environmental requirements. However, mechanical interface differences exist in panel cutout dimensions and termination style, which must be evaluated for specific installation contexts.

Parameter Comparison

Parameter	KB26CKG01-5F-JB (Main)	YB26CKG01-5F-JB (Substitute)
Manufacturer	NKK Switches	NKK Switches
Product Status	Obsolete	Active
Series	KB	YB
Circuit Configuration	DPDT	DPDT
Switch Function	On-On	On-On
Current Rating	0.4VA (AC/DC)	0.4VA (AC/DC)
Voltage Rating (AC)	28V	28V
Voltage Rating (DC)	28V	28V
Actuator Type	Round, Button	Round, Button
Actuator Color	Clear (White Filter/Diffuser)	Clear (White Filter/Diffuser)
Illumination Type	LED, Green	LED, Green
Illumination Voltage (Nominal)	2.1 VDC	2.0 VDC
Termination Style	Solder Lug	Solder, Quick Connect - 0.110" (2.8mm)
Panel Cutout Dimensions	Circular - 12.30mm Dia	Circular - 16.00mm Dia
Operating Temperature	-25°C ~ 50°C	-25°C ~ 50°C
Mechanical Life	100,000 Cycles	200,000 Cycles
Electrical Life	100,000 Cycles	100,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The YB26CKG01-5F-JB is electrically and environmentally equivalent to the KB26CKG01-5F-JB. Both components maintain ROHS3 compliance and MSL 1 ratings, ensuring regulatory alignment for applications requiring these certifications.

The YB26CKG01-5F-JB offers extended mechanical life (200,000 cycles versus 100,000 cycles), providing improved durability in high-cycle applications. The active product status of the YB26CKG01-5F-JB ensures ongoing availability and supply chain continuity.

Substitution requires evaluation of mechanical interface compatibility. The panel cutout diameter increases from 12.30mm to 16.00mm, and termination transitions from solder lug to solder with quick connect options. These differences necessitate panel modification or adapter consideration for direct replacement in existing installations.

Frequently Asked Questions (FAQ)

Q: Can the YB26CKG01-5F-JB replace the KB26CKG01-5F-JB in existing applications?

A: Electrical and environmental compatibility is confirmed. Mechanical interface compatibility depends on panel cutout dimensions and termination requirements. The YB26CKG01-5F-JB requires a 16.00mm circular cutout versus the 12.30mm required by the KB26CKG01-5F-JB. Termination style differences must be accommodated in the circuit design.

Q: What are the key electrical parameters that must match for substitution?

A: Circuit configuration (DPDT), switch function (On-On), current rating (0.4VA AC/DC), voltage rating (28V AC/DC), and illumination type (LED, Green) must remain constant. The YB26CKG01-5F-JB maintains all these parameters.

Q: Does the illumination voltage difference affect compatibility?

A: The illumination voltage difference (2.1 VDC versus 2.0 VDC) is within typical LED operating tolerances and does not prevent functional substitution. Circuit design should accommodate this nominal variation.

Q: Why is the panel cutout dimension different?

A: The YB26CKG01-5F-JB belongs to a different product series (YB versus KB) with different mechanical packaging. The larger cutout diameter reflects the physical design of the YB series housing.

Q: What is the advantage of the YB26CKG01-5F-JB over the KB26CKG01-5F-JB?

A: The YB26CKG01-5F-JB provides extended mechanical life (200,000 cycles) and maintains active product status, ensuring supply availability. The KB26CKG01-5F-JB is obsolete.

Q: Are both parts RoHS compliant?

A: Both the KB26CKG01-5F-JB and YB26CKG01-5F-JB are ROHS3 compliant, meeting environmental and regulatory requirements for restricted substance use.

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