KB25CKW01-JB Equivalent & Substitute Parts

Part Overview

The KB25CKW01-JB is a pushbutton switch manufactured by NKK Switches, featuring DPDT (Double Pole Double Throw) circuitry with On-Momentary switch function. This component is rated for 1A at 125V AC and 30V DC, with a round button actuator and solder lug termination. The product is currently obsolete, with 1,100 units available in stock. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Manufacturer	NKK Switches
Circuit Configuration	DPDT
Switch Function	On-Momentary
Current Rating	1A (AC/DC)
Voltage Rating - AC	125V
Voltage Rating - DC	30V
Mounting Type	Panel Mount, Front
Actuator Type	Round, Button
Termination Style	Solder Lug
Operating Temperature Range	-25°C to 70°C
Mechanical Life	100,000 Cycles
Electrical Life	50,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the KB25CKW01-JB is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Circuit configuration must be DPDT
Switch function must be On-Momentary
Voltage ratings must meet or exceed: 125V AC and 30V DC
Current rating must support minimum 1A (AC/DC)
Mounting type must be Panel Mount, Front
Actuator type must be Round, Button
Operating temperature range must encompass -25°C to 70°C

Acceptable Variation Parameters:

Current rating may exceed 1A
Mechanical and electrical life may exceed specified values
Termination style may differ if electrical connection is maintained
Panel cutout dimensions may vary within mechanical design constraints

The YB25CKW01-JB meets the mandatory compatibility criteria while exceeding performance specifications in current rating, mechanical life, and electrical life. However, termination style and panel cutout dimensions differ from the original part.

Parameter Comparison

Parameter	KB25CKW01-JB (Main Part)	YB25CKW01-JB (Substitute)
Manufacturer	NKK Switches	NKK Switches
Product Status	Obsolete	Active
Circuit Configuration	DPDT	DPDT
Switch Function	On-Momentary	On-Momentary
Current Rating	1A (AC/DC)	3A (AC/DC)
Voltage Rating - AC	125V	125V
Voltage Rating - DC	30V	30V
Mounting Type	Panel Mount, Front	Panel Mount, Front
Actuator Type	Round, Button	Round, Button
Actuator Color	Clear (White Filter/Diffuser)	Clear (White Filter/Diffuser)
Operating Temperature	-25°C to 70°C	-25°C to 70°C
Mechanical Life	100,000 Cycles	1,000,000 Cycles
Electrical Life	50,000 Cycles	100,000 Cycles
Termination Style	Solder Lug	Solder, Quick Connect - 0.110" (2.8mm)
Panel Cutout Diameter	12.30mm	16.00mm
RoHS Status	ROHS3 Compliant	Not specified
Inventory Status	1,100 Pcs New Original In Stock	1,078 Pcs New Original In Stock

Engineering Selection Recommendations

The YB25CKW01-JB qualifies as a functional substitute for the KB25CKW01-JB based on electrical and mechanical compatibility. Both components are manufactured by NKK Switches and share identical circuit configuration, switch function, voltage ratings, and operating temperature range.

The YB25CKW01-JB offers enhanced performance characteristics with 3A current rating (versus 1A), 1,000,000 mechanical cycles (versus 100,000), and 100,000 electrical cycles (versus 50,000). The KB25CKW01-JB maintains ROHS3 compliance status.

Selection between these parts depends on application-specific requirements:

Use KB25CKW01-JB when: Original part specifications are mandatory, solder lug termination is required, and 12.30mm panel cutout dimensions are fixed in the design.

Use YB25CKW01-JB when: Higher current capacity is beneficial, extended mechanical and electrical life is required, and panel cutout can accommodate 16.00mm diameter, or termination can be adapted to Quick Connect 0.110" (2.8mm) configuration.

Frequently Asked Questions (FAQ)

Q: Can YB25CKW01-JB directly replace KB25CKW01-JB in existing designs?

A: Electrical substitution is valid. However, mechanical integration requires verification of panel cutout dimensions (12.30mm versus 16.00mm) and termination compatibility (Solder Lug versus Solder/Quick Connect).

Q: What are the key differences in electrical performance?

A: The YB25CKW01-JB supports 3A current versus 1A in the KB25CKW01-JB. Both maintain identical voltage ratings (125V AC, 30V DC) and switch function (On-Momentary DPDT).

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both components operate across -25°C to 70°C without limitation.

Q: What is the impact of different mechanical life ratings?

A: The YB25CKW01-JB provides 1,000,000 mechanical cycles compared to 100,000 in the KB25CKW01-JB. This represents a 10-fold increase in mechanical durability and may extend component service life in high-cycle applications.

Q: How do termination differences affect circuit integration?

A: KB25CKW01-JB uses Solder Lug termination for direct PCB soldering. YB25CKW01-JB offers Solder and Quick Connect 0.110" (2.8mm) termination options, providing flexibility in connection methods but requiring circuit board redesign if switching between parts.

Q: Is RoHS compliance status identical for both parts?

A: KB25CKW01-JB is confirmed ROHS3 compliant. RoHS status for YB25CKW01-JB is not specified in available documentation.

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