LSYBC1A Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSYBC1A 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 LSYBC1A is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

LSYBC1A

Honeywell Sensing and Productivity SolutionsIn Stock: 751LSYBC1A Datasheet

Current PartRFQ

LSB1A

Honeywell Sensing and Productivity SolutionsIn Stock: 1128LSB1A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LSYBC1A is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

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

Mechanical Compatibility:

• Actuator type: Top Rotary without lever
• Mounting configuration: Chassis mount
• Termination method: Plug-in connection
• Operating force: 28gfm
• Travel specifications: 25° pretravel, 10° differential travel, 110° overtravel

Environmental & Regulatory Compliance:

• Operating temperature range: -1°C to 121°C
• RoHS compliance status
• Moisture sensitivity level: 1 (Unlimited)

The LSB1A substitute part maintains identical electrical and mechanical specifications across all parameters listed above, ensuring direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LSB1A

The LSB1A is the direct equivalent for the obsolete LSYBC1A. All electrical parameters, mechanical specifications, and environmental operating conditions are identical. The LSB1A is manufactured by the same supplier (Honeywell Sensing and Productivity Solutions) within the same HDLS series.

Availability and Compliance:

The LSB1A maintains active product status with 1047 units in current inventory, ensuring supply chain continuity. Both the main part and substitute are RoHS compliant and carry identical moisture sensitivity ratings (MSL 1 - Unlimited), confirming regulatory equivalence for applications requiring environmental compliance.

Packaging Consideration:

The LSYBC1A was supplied in standard packaging, while the LSB1A is available in bulk packaging. This difference does not affect functional or mechanical compatibility and reflects current manufacturing and distribution practices for active components.

Frequently Asked Questions (FAQ)

Q: Can LSB1A directly replace LSYBC1A in existing designs?

A: Yes. The LSB1A is electrically and mechanically identical to the LSYBC1A across all specified parameters. No circuit modifications or mechanical adjustments are required for direct substitution in chassis-mounted applications.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts share identical current ratings (10A AC / 800mA DC), voltage ratings (120V AC / 115V DC), circuit configuration (SPDT), and switch function (On-Momentary). Electrical performance is equivalent.

Q: What is the significance of the product status difference?

A: The LSYBC1A is obsolete and no longer manufactured. The LSB1A is an active product with current manufacturing and inventory support. Substitution to LSB1A ensures long-term supply availability and ongoing technical support from the manufacturer.

Q: Do both parts meet the same environmental and regulatory standards?

A: Yes. Both the LSYBC1A and LSB1A are RoHS compliant, operate across the identical temperature range (-1°C to 121°C), and carry the same moisture sensitivity level (MSL 1 - Unlimited).

Q: Is the bulk packaging of LSB1A suitable for my application?

A: Bulk packaging affects only the quantity per container and does not alter the component's electrical or mechanical specifications. The LSB1A in bulk packaging is functionally identical to the LSYBC1A and suitable for all applications where the original part was used.

Q: Are the mechanical specifications identical, including actuator and mounting?

A: Yes. Both parts feature identical top rotary actuators without lever, chassis mount configuration, plug-in termination, and identical travel specifications (25° pretravel, 10° differential travel, 110° overtravel). Operating force is 28gfm for both parts.