LSXYFB3K Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSXYFB3K is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, classified as a Single Pole Double Throw (SPDT) switch with chassis mount configuration. This component features a side roller plunger actuator and is rated for 10A AC at 120V operation. The LSXYFB3K is designated as obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing system support and component procurement.

Substiute Parts

LSXYFB3K

Honeywell Sensing and Productivity SolutionsIn Stock: 1007LSXYFB3K Datasheet

Current PartRFQ

LSXF3K

Honeywell Sensing and Productivity SolutionsIn Stock: 938LSXF3K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSXYFB3K is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Circuit configuration (SPDT DB/DM), switch function (On-Momentary), current rating (10A AC / 800mA DC), and voltage ratings (120V AC / 115V DC) must remain identical.

Mechanical Specifications: Actuator type (Side Roller Plunger), mounting type (Chassis Mount), and termination style (Screw Terminal) must match exactly.

Dimensional and Operational Specifications: Operating force (2720gf), operating position (1.735" / 44.1mm), pretravel (0.100" / 2.5mm), differential travel (0.045" / 1.1mm), and overtravel (0.190" / 4.8mm) must be identical.

Compliance and Environmental: RoHS compliance status and Moisture Sensitivity Level (MSL 1) must be maintained. Explosion Proof feature classification must be preserved.

The LSXF3K meets all substitution criteria and is classified as an active product, providing continuity for applications currently utilizing the obsolete LSXYFB3K.

Parameter Comparison

Engineering Selection Recommendations

The LSXF3K is the direct functional equivalent for the obsolete LSXYFB3K. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the LSX series and maintain identical electrical, mechanical, and dimensional specifications. The LSXF3K is designated as an active product, ensuring ongoing availability and manufacturer support.

Both components maintain RoHS compliance and MSL 1 rating, satisfying environmental and moisture sensitivity requirements. The Explosion Proof feature classification is preserved across both part numbers, maintaining suitability for hazardous location applications.

The primary distinction between the two parts is product status: the LSXYFB3K is obsolete while the LSXF3K is active. For new designs and ongoing procurement, the LSXF3K is the appropriate selection. Existing systems utilizing the LSXYFB3K may be directly retrofitted with the LSXF3K without modification to electrical or mechanical interfaces.

Frequently Asked Questions (FAQ)

Q: Can the LSXF3K directly replace the LSXYFB3K in existing applications?

A: Yes. The LSXF3K is electrically and mechanically equivalent to the LSXYFB3K. All critical parameters including circuit configuration, current and voltage ratings, actuator type, mounting configuration, and dimensional specifications are identical. Direct substitution is supported without circuit or mechanical redesign.

Q: What is the difference between LSXYFB3K and LSXF3K?

A: The LSXYFB3K is obsolete product status, while the LSXF3K is active. All functional and electrical specifications are identical. The LSXF3K represents the current production equivalent for the discontinued LSXYFB3K.

Q: Are there packaging differences between these parts?

A: The LSXYFB3K is supplied with standard packaging, while the LSXF3K is supplied in bulk packaging. Both configurations contain identical components with no functional differences.

Q: Does the LSXF3K maintain the Explosion Proof classification?

A: Yes. The LSXF3K retains the Explosion Proof feature classification of the LSXYFB3K, maintaining suitability for hazardous location applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the LSXYFB3K and LSXF3K are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for the LSXF3K?

A: The LSXF3K operates from -12°C to 93°C. The LSXYFB3K operates from -29°C to 93°C. For applications requiring operation below -12°C, the LSXYFB3K specifications must be verified for compatibility.