LSYBB1A Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSYBB1A 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 is rated for 10A AC at 120V and 800mA DC at 115V, featuring a top rotary actuator without lever and plug-in termination style.

The LSYBB1A carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing maintenance and production requirements for systems utilizing this component.

Substiute Parts

LSYBB1A

Honeywell Sensing and Productivity SolutionsIn Stock: 922LSYBB1A Datasheet

Current PartRFQ

LSB1A

Honeywell Sensing and Productivity SolutionsIn Stock: 1128LSB1A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYBB1A is determined by strict alignment of the following critical parameters:

Electrical Compatibility Parameters:

• Circuit configuration: SPDT (DB/DM)
• Switch function: On-Mom
• Current rating: 10A (AC) and 800mA (DC)
• Voltage rating: 120V (AC) and 115V (DC)

Mechanical Compatibility Parameters:

• Actuator type: Top Rotary - No Lever
• Mounting type: Chassis Mount
• Termination style: Plug In
• Operating force: 28gfm
• Travel specifications: Pretravel 25°, Differential Travel 10°, Overtravel 110°

Environmental & Compliance Parameters:

• Operating temperature range capability
• RoHS compliance status
• Moisture sensitivity level

The substitute part LSB1A meets all electrical and mechanical compatibility requirements. Both components share identical circuit configuration, current and voltage ratings, actuator type, mounting method, and termination style. Both are RoHS compliant with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LSB1A

The LSB1A is the direct equivalent substitute for the obsolete LSYBB1A. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and share identical electrical and mechanical specifications across all critical parameters: SPDT circuit configuration, 10A AC / 800mA DC current ratings, 120V AC / 115V DC voltage ratings, top rotary actuator without lever, chassis mount configuration, and plug-in termination.

Compliance Status: Both the LSYBB1A and LSB1A are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory alignment and environmental stability in storage and handling.

Product Status Consideration: The LSB1A maintains Active product status, providing assured long-term availability and supply chain continuity compared to the Obsolete LSYBB1A. This status transition supports ongoing procurement for new production and field replacement applications.

Operating Temperature Differential: The LSB1A operating temperature range (-1°C ~ 121°C) is narrower than the LSYBB1A (-29°C ~ 121°C) at the lower temperature extreme. Applications requiring operation below -1°C must retain the LSYBB1A or evaluate alternative component families.

Packaging Consideration: The LSB1A is supplied in Bulk packaging, whereas the LSYBB1A packaging specification is not defined. Confirm packaging requirements align with procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can LSB1A directly replace LSYBB1A in existing designs?

A: Yes, for applications operating within the LSB1A temperature range (-1°C ~ 121°C). The LSB1A matches all electrical specifications (10A AC at 120V, 800mA DC at 115V), mechanical configuration (SPDT, top rotary actuator, chassis mount, plug-in termination), and travel characteristics (25° pretravel, 10° differential travel, 110° overtravel). If your application requires operation below -1°C, the LSYBB1A must be retained or alternative components evaluated.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: circuit configuration (SPDT DB/DM), switch function (On-Mom), current rating (10A AC / 800mA DC), and voltage rating (120V AC / 115V DC). Any deviation in these parameters disqualifies a component as a direct substitute.

Q: Are both parts RoHS compliant?

A: Yes. Both LSYBB1A and LSB1A are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity level, meeting environmental and regulatory requirements for industrial and commercial applications.

Q: Why is the LSYBB1A obsolete while LSB1A is active?

A: The LSB1A represents the current production equivalent within the HDLS series. Honeywell has transitioned the LSYBB1A to obsolete status while maintaining the functionally identical LSB1A as the active product offering. This consolidation ensures supply continuity and manufacturing efficiency.

Q: Does packaging differ between these parts?

A: Yes. The LSB1A is supplied in Bulk packaging. The LSYBB1A packaging specification is not defined in available documentation. Confirm packaging requirements with your procurement process before finalizing substitution.

Q: What mechanical parameters must match for substitution?

A: Substitution requires matching: actuator type (Top Rotary - No Lever), mounting type (Chassis Mount), termination style (Plug In), operating force (28gfm), pretravel (25°), differential travel (10°), and overtravel (110°). The LSB1A matches all these specifications.