LSYNB1A Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSYNB1A 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 side rotary actuator without lever and plug-in termination style.

The LSYNB1A is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure design continuity, and support ongoing production or maintenance requirements where this component is specified.

Substiute Parts

LSYNB1A

Honeywell Sensing and Productivity SolutionsIn Stock: 1189LSYNB1A Datasheet

Current PartRFQ

LSN1A

Honeywell Sensing and Productivity SolutionsIn Stock: 1178LSN1A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYNB1A is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPDT (DB/DM)
• Switch function must be On-On
• 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, pretravel, differential travel, and overtravel specifications must match

Environmental and Compliance Requirements:

• Operating temperature range must encompass the specified range
• RoHS compliance status must be maintained
• Moisture sensitivity level must be compatible

The LSN1A substitute part meets all electrical and mechanical parameters specified for the LSYNB1A, with the exception of the operating temperature lower limit, which differs by 28°C.

Parameter Comparison

Engineering Selection Recommendations

The LSN1A is the direct substitute for the obsolete LSYNB1A based on electrical and mechanical parameter equivalence. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and share identical circuit configuration, current and voltage ratings, actuator type, mounting configuration, and termination style.

The LSN1A is currently in active product status, ensuring availability and ongoing manufacturer support. Both parts maintain RoHS compliance and identical moisture sensitivity classification, supporting regulatory and environmental requirements.

The primary distinction between the two parts is the operating temperature lower limit: the LSYNB1A operates from -29°C, while the LSN1A operates from -1°C. Component selection should account for this 28°C difference in minimum operating temperature if the application requires operation below -1°C.

The LSN1A is supplied in bulk packaging, whereas packaging information for the LSYNB1A is not specified in the provided data.

Frequently Asked Questions (FAQ)

Q: Can the LSN1A directly replace the LSYNB1A in all applications?

A: The LSN1A is electrically and mechanically equivalent to the LSYNB1A across all specified parameters except operating temperature minimum. If your application operates at temperatures below -1°C, the LSN1A may not be suitable. For applications operating at -1°C or above, the LSN1A is a direct substitute.

Q: What is the difference between LSYNB1A and LSN1A?

A: Both parts are SPDT snap action switches from Honeywell with identical electrical ratings (10A AC at 120V, 800mA DC at 115V), mechanical specifications, and actuator configuration. The LSYNB1A is obsolete, while the LSN1A is active. The LSN1A has a higher minimum operating temperature (-1°C versus -29°C).

Q: Are there any packaging differences between these parts?

A: The LSN1A is supplied in bulk packaging. Packaging information for the LSYNB1A is not provided in the available data.

Q: Do both parts meet RoHS compliance requirements?

A: Yes, both the LSYNB1A and LSN1A are RoHS compliant and carry identical Moisture Sensitivity Level 1 (Unlimited) classification.

Q: What should I consider when selecting between these parts?

A: Primary selection criteria are operating temperature requirements and product availability. If your application requires operation below -1°C, the LSYNB1A specifications are necessary. For applications within the -1°C to 121°C range, the active LSN1A is the recommended choice due to current availability and manufacturer support.