KB25RKW01 Equivalent & Substitute Parts

Part Overview

The KB25RKW01 is a DPDT pushbutton switch manufactured by NKK Switches, rated for 1A at 125V AC and 30V DC. This component features a plunger actuator with solder lug termination and is designed for standard panel mount, front installation with a 12.30mm circular panel cutout. The KB25RKW01 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

KB25RKW01

NKK SwitchesIn Stock: 1080KB25RKW01 Datasheet

Current PartRFQ

YB25RKW01

NKK SwitchesIn Stock: 1063YB25RKW01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB25RKW01 is determined by the following critical parameters:

Circuit configuration must remain DPDT to maintain electrical functionality. Switch function must be On-Mom to preserve operational behavior. Voltage ratings must meet or exceed the original specifications: minimum 125V AC and 30V DC. Current rating must support the application load; the substitute YB25RKW01 provides 3A capacity, which exceeds the original 1A requirement and is therefore acceptable for applications rated at or below 1A.

Mounting type and panel mount orientation must remain consistent. Operating temperature range must encompass the original -25°C to 70°C specification. RoHS3 compliance is maintained across both parts. Termination style differences (solder lug versus solder with quick connect) require evaluation based on circuit board design and assembly requirements.

Parameter Comparison

Engineering Selection Recommendations

The YB25RKW01 is a direct functional substitute for the KB25RKW01 based on matching circuit configuration, switch function, voltage ratings, and operating temperature range. Both components maintain ROHS3 compliance and are manufactured by NKK Switches.

The YB25RKW01 is currently in active production status, whereas the KB25RKW01 is obsolete. This makes the YB25RKW01 the appropriate selection for new designs and ongoing system support where the KB25RKW01 is no longer available.

Key design considerations: The YB25RKW01 features a larger panel cutout diameter (16.00mm versus 12.30mm), requiring panel modification or redesign of the mounting interface. The termination style differs, incorporating quick connect terminals in addition to solder capability, which may require circuit board layout adjustment. The YB25RKW01 provides superior mechanical and electrical life ratings (1,000,000 and 100,000 cycles respectively), exceeding the original specifications. The current rating of 3A accommodates applications originally specified at 1A without derating concerns.

Frequently Asked Questions (FAQ)

Q: Can the YB25RKW01 directly replace the KB25RKW01 without circuit board modification?

A: Electrical substitution is valid. However, the panel cutout diameter increases from 12.30mm to 16.00mm, requiring mechanical panel modification. Termination style differences (solder lug versus solder with quick connect) may require circuit board layout changes depending on existing connection methods.

Q: Are the voltage and current ratings compatible?

A: Yes. The YB25RKW01 maintains identical voltage ratings (125V AC, 30V DC) and provides higher current capacity (3A versus 1A). Applications designed for 1A operation are fully compatible with the 3A-rated substitute.

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

A: The YB25RKW01 requires a 16.00mm circular cutout compared to the original 12.30mm. Existing panel designs must be modified to accommodate the larger opening. This is a mechanical constraint that must be addressed during integration.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the KB25RKW01 and YB25RKW01 are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory compliance.

Q: What are the termination differences and how do they affect installation?

A: The KB25RKW01 uses solder lug termination exclusively. The YB25RKW01 provides both solder and quick connect (0.110" / 2.8mm) termination options. Circuit board design must accommodate the quick connect terminals, or solder-only connection methods may be employed if the board layout permits.

Q: Is the YB25RKW01 available in the same packaging as the KB25RKW01?

A: No. The KB25RKW01 is supplied in bulk packaging, while the YB25RKW01 is supplied in tray packaging. Procurement and handling procedures may differ accordingly.