LY-23 Equivalent & Substitute Parts

Part Overview

The LY-23 is a magnetic reed switch manufactured by Coto Technology, classified as a SPST-NO (Single Pole Single Throw - Normally Open) sensor with wire leads. This component operates as a magnetically actuated switch, transitioning from open to closed state when exposed to a magnetic field. The LY-23 is designated as obsolete, necessitating identification of functionally equivalent active alternatives for new designs and ongoing production requirements. The part maintains RoHS compliance and operates across the industrial temperature range of -40°C to 85°C.

Substiute Parts

LY-23

Coto TechnologyIn Stock: 804LY-23 Datasheet

Current PartRFQ

59140-010

Littelfuse Inc.In Stock: 181459140-010 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LY-23 is based on functional equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Output Type: SPST-NO configuration
• Actuator Material: Magnet
• Termination Style: Wire Leads
• Category: Magnetic Sensors / Reed Switch

Compatibility Considerations:

• Operating temperature range of the substitute must encompass or exceed the LY-23 operating window (-40°C ~ 85°C)
• RoHS and REACH compliance status must be maintained
• Moisture sensitivity classification must be equivalent or superior

The substitute part 59140-010 from Littelfuse Inc. satisfies all mandatory matching criteria. While the package configuration differs (Flange Mount versus Rectangular), both employ wire lead termination suitable for equivalent circuit integration. The substitute operates across an extended temperature range (-40°C ~ 105°C) and maintains identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LY-23 is classified as obsolete and should be replaced in new designs and production continuations. The 59140-010 from Littelfuse Inc. is the identified equivalent substitute, offering the following advantages:

Product Status: The 59140-010 maintains active production status, ensuring long-term availability and supply chain stability compared to the obsolete LY-23.

Compliance Enhancement: The 59140-010 carries ROHS3 certification, representing current RoHS compliance standards. Both parts maintain REACH Unaffected status, satisfying regulatory requirements.

Thermal Performance: The 59140-010 extends the upper operating temperature limit to 105°C, providing additional thermal margin beyond the LY-23 specification of 85°C. This enhanced range accommodates applications with elevated ambient or component-generated heat.

Functional Equivalence: Both components employ identical SPST-NO switching logic with magnetic actuation and wire lead termination, ensuring circuit-level compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the 59140-010 directly replace the LY-23 in existing circuits?

A: The 59140-010 provides functional equivalence at the circuit level. Both components operate as SPST-NO magnetic reed switches with wire lead termination. Physical mounting may require adaptation due to package configuration differences (Rectangular versus Flange Mount), but electrical performance is compatible.

Q: What are the key differences between the LY-23 and 59140-010?

A: The primary differences are product status (Obsolete versus Active), package configuration (Rectangular Wire Leads versus Flange Mount), and operating temperature range (85°C maximum versus 105°C maximum). Functional switching characteristics and compliance certifications remain equivalent.

Q: Does the extended temperature range of the 59140-010 affect compatibility?

A: No. The extended operating range of the 59140-010 (-40°C ~ 105°C) encompasses the LY-23 specification (-40°C ~ 85°C). This represents an enhancement that provides additional thermal margin without introducing incompatibility.

Q: Are there compliance or regulatory concerns with substitution?

A: Both components maintain REACH Unaffected status. The 59140-010 carries ROHS3 certification, which represents current RoHS standards and is fully compatible with applications requiring RoHS compliance.

Q: What is the significance of the Flange Mount package on the 59140-010?

A: The Flange Mount configuration affects physical installation and mechanical mounting. Both components retain wire lead termination for electrical connection. Circuit integration remains compatible; mechanical mounting design may require adjustment to accommodate the different package form factor.

Q: Is the Moisture Sensitivity Level (MSL) rating equivalent between parts?

A: Yes. Both the LY-23 and 59140-010 carry MSL 1 (Unlimited) classification, indicating identical moisture sensitivity performance and handling requirements.