KSC241J Equivalent & Substitute Parts

Part Overview

The KSC241J is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.05A at 32VDC. This surface mount component features top actuation, IP67 ingress protection, and is designed for applications requiring reliable tactile feedback with sealed operation. The KSC241J is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications.

Substiute Parts

KSC241J

C&KIn Stock: 2466KSC241J Datasheet

Current PartRFQ

KSC241JLFS

C&KIn Stock: 23843KSC241JLFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSC241J is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically for a part to serve as a direct substitute:

• Circuit configuration (SPST-NO)
• Contact rating (0.05A @ 32VDC)
• Mounting type (Surface Mount)
• Actuator height (4.60mm)
• Outline dimensions (6.20mm x 6.20mm)
• Operating force (350gf)
• Switch travel (0.50mm)
• Ingress protection rating (IP67)
• Operating temperature range (-40°C to 85°C)
• Mechanical life (300,000 Cycles)
• Termination style (J Lead)

The KSC241JLFS meets all these criteria and is therefore classified as a direct functional equivalent. The primary distinction between these parts is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The KSC241JLFS is the direct functional equivalent to the obsolete KSC241J. Both parts share identical electrical specifications, mechanical dimensions, and performance characteristics. Selection between these parts should be based on the following factors:

Product Status: The KSC241J is obsolete with limited inventory availability. The KSC241JLFS maintains active production status, ensuring long-term supply chain reliability and availability for new designs and production runs.

Regulatory Compliance: The KSC241JLFS is ROHS3 compliant, meeting current environmental and regulatory requirements. The KSC241J is RoHS non-compliant, which may present restrictions in certain markets and applications subject to RoHS directives.

Packaging Considerations: The KSC241J is supplied in bulk packaging, while the KSC241JLFS is supplied in Tape & Reel format. Tape & Reel packaging is standard for automated assembly processes and provides improved handling, traceability, and component protection during manufacturing.

For new designs, production transitions, and applications requiring regulatory compliance, the KSC241JLFS is the appropriate selection. For legacy system maintenance where original packaging format is not a constraint, the KSC241JLFS provides full functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the KSC241JLFS be used as a direct replacement for the KSC241J in existing designs?

A: Yes. The KSC241JLFS is electrically and mechanically identical to the KSC241J. All critical parameters including contact rating, switching characteristics, dimensions, and environmental specifications are equivalent. The parts are pin-compatible and footprint-compatible for PCB assembly.

Q: What is the difference between the KSC241J and KSC241JLFS part numbers?

A: The primary differences are product status, packaging format, and RoHS compliance. The KSC241J is obsolete and supplied in bulk packaging with RoHS non-compliant status. The KSC241JLFS is active production, supplied in Tape & Reel packaging, and ROHS3 compliant.

Q: Does the Tape & Reel packaging of the KSC241JLFS affect performance or reliability?

A: No. Tape & Reel packaging is a standard industry format for surface mount components and does not affect electrical performance, mechanical reliability, or operational characteristics. The component itself remains identical.

Q: Are there any compatibility issues when transitioning from KSC241J to KSC241JLFS?

A: No compatibility issues exist. Both parts have identical footprints, pinouts, and electrical specifications. PCB designs, assembly processes, and application circuits require no modification.

Q: Why is RoHS compliance important for this substitution?

A: RoHS compliance is a regulatory requirement in many markets and industries. The KSC241JLFS ROHS3 compliance ensures the part meets current environmental standards and can be used in applications subject to RoHS directives without restriction.