LSYBC3K Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSYBC3K 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 screw terminal termination.

The LSYBC3K is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this switch architecture.

Substiute Parts

LSYBC3K

Honeywell Sensing and Productivity SolutionsIn Stock: 923LSYBC3K Datasheet

Current PartRFQ

LSB3K

Honeywell Sensing and Productivity SolutionsIn Stock: 989LSB3K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYBC3K is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

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

Mechanical Compatibility Requirements:

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

Environmental & Compliance Requirements:

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

The substitute part LSB3K meets all electrical, mechanical, and environmental parameters specified for the LSYBC3K, establishing direct functional equivalence within the HDLS series.

Parameter Comparison

Engineering Selection Recommendations

The LSB3K represents a direct functional equivalent to the LSYBC3K across all critical electrical, mechanical, and environmental parameters. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and maintain identical specifications for circuit configuration, current and voltage ratings, actuator characteristics, and operating conditions.

The primary distinction between these parts is product status: the LSYBC3K is obsolete, while the LSB3K maintains active production status. This status difference ensures ongoing availability and supply chain continuity for the LSB3K.

Both components carry RoHS compliance certification and MSL 1 rating, confirming equivalent environmental and regulatory standing. The LSB3K is supplied in bulk packaging, which may differ from the original LSYBC3K packaging specification.

For applications currently utilizing the LSYBC3K, the LSB3K provides direct substitution without modification to electrical schematics, mechanical mounting interfaces, or operational parameters.

Frequently Asked Questions (FAQ)

Q: Can the LSB3K directly replace the LSYBC3K in existing applications?

A: Yes. The LSB3K meets all electrical, mechanical, and environmental specifications of the LSYBC3K. No circuit modifications, mounting changes, or operational adjustments are required for direct substitution.

Q: What is the primary reason for substituting the LSYBC3K?

A: The LSYBC3K is classified as obsolete. The LSB3K, an active production part with identical specifications, ensures continued component availability and supply chain reliability.

Q: Are the current and voltage ratings identical between these parts?

A: Yes. Both the LSYBC3K and LSB3K are rated for 10A AC at 120V and 800mA DC at 115V. Electrical load capacity is equivalent.

Q: Do these parts share the same mechanical interface?

A: Yes. Both components feature identical actuator type (Top Rotary - No Lever), mounting type (Chassis Mount), termination style (Screw Terminal), and travel specifications (Pretravel 25°, Differential Travel 10°, Overtravel 110°).

Q: What is the difference in packaging between these parts?

A: The LSYBC3K packaging specification is not provided in the technical data. The LSB3K is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the LSYBC3K and LSB3K carry RoHS compliance certification and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for these switches?

A: Both parts operate across the identical temperature range of -1°C to 121°C, ensuring equivalent thermal performance in specified environments.

Q: Are there any electrical life or mechanical life specifications provided?

A: Electrical life and mechanical life specifications are not provided in the technical data for either component.