KSC621J Equivalent & Substitute Parts

Part Overview

The KSC621J 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 KSC621J carries an obsolete product status, making identification of compatible alternatives essential for ongoing production and maintenance applications.

Substiute Parts

KSC621J

C&KIn Stock: 1110KSC621J Datasheet

Current PartRFQ

KSC621J LFS

C&KIn Stock: 14425KSC621J LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC621J is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO
• Contact rating: 0.05A @ 32VDC
• Mounting type: Surface Mount
• Actuator height: 7.70mm
• Outline dimensions: 6.20mm x 6.20mm
• Operating force: 170gf
• Ingress protection: IP67
• Operating temperature range: -40°C to 85°C
• Switch travel: 0.40mm
• Mechanical life: 300,000 Cycles
• Termination style: J Lead
• Actuator orientation: Top Actuated

The KSC621J LFS meets all these parameters and is classified as a direct substitute. The primary distinction is packaging format and product status compliance.

Parameter Comparison

Engineering Selection Recommendations

The KSC621J LFS is the direct functional equivalent to the KSC621J. Both components share identical electrical and mechanical specifications across all critical parameters. The KSC621J LFS is recommended for new designs and ongoing production due to its active product status and ROHS3 compliance. The primary differences are packaging format (Tape & Reel versus bulk) and regulatory compliance status. Component selection should be based on supply chain requirements and compliance mandates applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can KSC621J LFS be used as a direct replacement for KSC621J in existing designs?

A: Yes. The KSC621J LFS is electrically and mechanically equivalent to the KSC621J across all specified parameters, including circuit configuration, contact rating, mounting type, actuator dimensions, operating force, ingress protection, temperature range, and mechanical life. Substitution is valid for applications where the component footprint and electrical requirements match the original specification.

Q: What is the difference between KSC621J and KSC621J LFS?

A: The primary differences are packaging format and product status. The KSC621J is supplied in bulk packaging and carries obsolete status. The KSC621J LFS is supplied in Tape & Reel format and maintains active product status with ROHS3 compliance. All functional and mechanical parameters are identical.

Q: Are there any compatibility concerns when substituting KSC621J with KSC621J LFS?

A: No compatibility concerns exist for electrical or mechanical integration. Both components feature identical footprints, pin configurations, and performance characteristics. Packaging format differences do not affect component functionality or PCB assembly compatibility.

Q: What does IP67 ingress protection mean for this tactile switch?

A: IP67 classification indicates the component is dust tight and waterproof to temporary immersion. This rating applies to the sealed switch mechanism and ensures reliable operation in environments with moisture and particulate exposure.

Q: Is the KSC621J LFS suitable for high-volume production?

A: Yes. The KSC621J LFS is supplied in Tape & Reel packaging, which is standard for automated assembly processes and high-volume manufacturing. This packaging format supports efficient pick-and-place operations and reduces handling costs compared to bulk packaging.