LSF6B3 Equivalent & Substitute Parts Reference

Part Overview

The LSF6B3 is a snap action DPDT (double pole double throw) switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with side roller plunger actuation. This component operates at 10A AC (120V) and 800mA DC (115V), featuring On-Momentary switch function with plug-in termination.

The LSF6B3 is classified 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 switch configuration.

Substiute Parts

LSF6B3

Honeywell Sensing and Productivity SolutionsIn Stock: 955LSF6B3 Datasheet

Current PartRFQ

LSF7L3

Honeywell Sensing and Productivity SolutionsIn Stock: 733LSF7L3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSF6B3 is based on electrical and mechanical parameter equivalence within the HDLS series snap action switch family. The primary substitute identified is the LSF7L3, which maintains identical electrical specifications and mechanical characteristics.

Critical substitution parameters:

• Circuit configuration (DPDT DB/DM)
• Switch function (On-Momentary)
• Current and voltage ratings (10A AC at 120V; 800mA DC at 115V)
• Actuator type and mounting configuration (Side Roller Plunger, Chassis Mount)
• Mechanical travel specifications (Pretravel, Differential Travel, Overtravel)
• Operating force (2720gf)
• Operating temperature range (-12°C to 93°C)
• Environmental compliance (RoHS Compliant, MSL 1)

The LSF7L3 satisfies all these parameters, enabling direct functional substitution with consideration for termination style differences.

Parameter Comparison

Engineering Selection Recommendations

The LSF7L3 is the qualified substitute for the LSF6B3 based on complete electrical and mechanical parameter equivalence. Both components are RoHS Compliant with MSL 1 rating, ensuring environmental and regulatory compatibility.

Primary consideration: The LSF7L3 features screw terminal termination, whereas the LSF6B3 uses plug-in termination. This difference requires evaluation of the existing circuit board or connector interface. If the original design accommodates screw terminal connections, the LSF7L3 provides direct substitution with the advantage of active product status and current manufacturing availability.

The LSF7L3 is currently in active production status with 720 units in stock, compared to the obsolete LSF6B3 status. This availability and active support status makes the LSF7L3 the preferred selection for new designs and ongoing supply requirements.

Frequently Asked Questions (FAQ)

Q: Can the LSF7L3 directly replace the LSF6B3 in existing applications?

A: Electrical and mechanical substitution is complete. The primary difference is termination style: LSF6B3 uses plug-in termination while LSF7L3 uses screw terminal. Circuit board or connector modifications may be required depending on the existing interface design.

Q: Are the electrical ratings identical between LSF6B3 and LSF7L3?

A: Yes. Both components operate at 10A AC (120V) and 800mA DC (115V) with identical DPDT circuit configuration and On-Momentary switch function.

Q: Do both parts meet the same environmental compliance standards?

A: Yes. Both the LSF6B3 and LSF7L3 are RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting equivalent environmental and regulatory requirements.

Q: What is the significance of the LSF6B3 being obsolete?

A: Obsolete status indicates the part is no longer manufactured. The LSF7L3, classified as active, represents the current equivalent available from Honeywell and is recommended for new designs and ongoing production support.

Q: Are the mechanical travel specifications the same?

A: Yes. Both parts have identical pretravel (0.100" / 2.5mm), differential travel (0.035" / 0.9mm), and overtravel (0.190" / 4.8mm) specifications, ensuring equivalent mechanical performance.

Q: What packaging differences exist between these parts?

A: The LSF6B3 is supplied in standard packaging, while the LSF7L3 is supplied in bulk packaging. This does not affect component functionality or performance.