KSC351J Equivalent & Substitute Parts

Part Overview

The KSC351J 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 KSC351J is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications.

Substiute Parts

KSC351J

C&KIn Stock: 1195KSC351J Datasheet

Current PartRFQ

KSC351JLFS

C&KIn Stock: 4847KSC351JLFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC351J is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part KSC351JLFS maintains identical specifications in circuit configuration (SPST-NO), contact rating (0.05A @ 32VDC), mounting type (Surface Mount), physical dimensions (6.20mm x 6.20mm), actuator height (4.60mm), operating force (500gf), switch travel (0.25mm), ingress protection (IP67), operating temperature range (-40°C to 85°C), mechanical life (100,000 cycles), and termination style (J Lead).

The primary distinction between these parts is product status and compliance certification. The KSC351J is obsolete, while KSC351JLFS is active and RoHS3 compliant, making it the direct functional replacement for new designs and ongoing production requirements.

Parameter Comparison

Engineering Selection Recommendations

The KSC351JLFS is the direct equivalent replacement for the obsolete KSC351J. Both parts are electrically and mechanically identical across all functional parameters. Selection of KSC351JLFS is recommended for all applications currently using or specifying KSC351J due to its active product status and RoHS3 compliance certification. The KSC351JLFS maintains full compatibility with existing PCB layouts and assembly processes while providing improved regulatory compliance for modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can KSC351JLFS be used as a direct replacement for KSC351J in existing designs?

A: Yes. The KSC351JLFS is electrically and mechanically equivalent to the KSC351J. All critical parameters including circuit configuration, contact rating, physical dimensions, actuator specifications, and operating characteristics are identical. No design modifications are required.

Q: What is the primary difference between KSC351J and KSC351JLFS?

A: The KSC351J is obsolete, while KSC351JLFS is an active product with RoHS3 compliance certification. The KSC351JLFS also offers improved packaging options including Cut Tape and Digi-Reel formats for production environments.

Q: Are the PCB footprints identical between these parts?

A: Yes. Both parts share identical outline dimensions (6.20mm x 6.20mm), actuator height (4.60mm), and J Lead termination style, ensuring complete footprint compatibility.

Q: What packaging formats are available for KSC351JLFS?

A: KSC351JLFS is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual and automated assembly processes.

Q: Are there any compliance differences between these parts?

A: The KSC351JLFS is RoHS3 compliant, while the KSC351J is non-compliant. Both parts maintain identical REACH and ECCN classifications. For applications requiring RoHS compliance, KSC351JLFS is the appropriate selection.