LSYUB2B Equivalent & Substitute Parts Reference

Part Overview

The LSYUB2B is a snap action DPDT (double pole double throw) switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with side rotary actuator and plug-in termination. This component is rated for 10A AC at 120V and 800mA DC at 115V, operating across a temperature range of -40°C to 121°C.

The LSYUB2B is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing maintenance and production requirements for systems utilizing this switch architecture.

Substiute Parts

LSYUB2B

Honeywell Sensing and Productivity SolutionsIn Stock: 1150LSYUB2B Datasheet

Current PartRFQ

LSU2B

Honeywell Sensing and Productivity SolutionsIn Stock: 943LSU2B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYUB2B is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be DPDT (DB/DM)
• Switch function must be On-Mom
• Current rating must support minimum 10A AC and 800mA DC
• Voltage ratings must meet or exceed 120V AC and 115V DC

Mechanical Compatibility Requirements:

• Actuator type must be Side Rotary - No Lever
• Mounting type must be Chassis Mount
• Termination style must be Plug In
• Operating force must be 46gfm
• Travel specifications (pretravel 5°, differential travel 4°, overtravel 70°) must match

Environmental & Compliance Requirements:

• Operating temperature range must encompass the application requirements
• RoHS compliance status must be maintained
• Moisture sensitivity level must be 1 (Unlimited)

The LSU2B meets all substitution criteria for the LSYUB2B across electrical, mechanical, and environmental parameters.

Parameter Comparison

Engineering Selection Recommendations

The LSU2B is a direct functional equivalent to the LSYUB2B across all critical electrical and mechanical parameters. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and maintain identical circuit configuration, current and voltage ratings, actuator specifications, and travel characteristics.

The primary distinction is product status: the LSYUB2B is obsolete while the LSU2B is active production. The LSU2B operates across a narrower temperature range (-12°C to 121°C versus -40°C to 121°C for the LSYUB2B). Applications requiring operation below -12°C must account for this lower temperature limit.

Both parts maintain RoHS compliance and MSL 1 (Unlimited) moisture sensitivity classification, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can LSU2B replace LSYUB2B in all applications?

A: LSU2B is electrically and mechanically equivalent to LSYUB2B across all specified parameters. The operating temperature range difference must be evaluated: LSU2B operates from -12°C to 121°C, while LSYUB2B operates from -40°C to 121°C. Applications requiring operation below -12°C require confirmation that LSU2B meets temperature requirements.

Q: What is the difference between LSYUB2B and LSU2B packaging?

A: LSYUB2B is supplied in standard packaging, while LSU2B is supplied in bulk packaging. Both use identical plug-in termination and chassis mount configuration. Packaging format does not affect electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. Both LSYUB2B and LSU2B are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: Why is LSYUB2B obsolete if LSU2B is functionally identical?

A: Product obsolescence reflects manufacturing lifecycle decisions by Honeywell. LSU2B represents the active production equivalent within the HDLS series. LSU2B is the recommended source for new designs and ongoing supply requirements.

Q: Are the electrical ratings identical between both parts?

A: Yes. Both parts are rated for 10A AC at 120V and 800mA DC at 115V with identical DPDT (DB/DM) circuit configuration and On-Mom switch function.

Q: What are the mechanical compatibility requirements for substitution?

A: Both parts feature identical side rotary actuator (no lever), chassis mount configuration, plug-in termination, 46gfm operating force, and travel specifications (5° pretravel, 4° differential travel, 70° overtravel).