KSC243J Equivalent & Substitute Parts

Part Overview

The KSC243J is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.01A at 32VDC. This surface mount component features top actuation, IP67 ingress protection, and is designed for applications requiring reliable momentary switching in compact form factors.

The KSC243J carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for legacy systems utilizing this component.

Substiute Parts

KSC243J

C&KIn Stock: 718KSC243J Datasheet

Current PartRFQ

KSC243JLFG

C&KIn Stock: 3222KSC243JLFG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSC243J is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPST-NO)
• Contact rating (0.01A @ 32VDC)
• Surface mount packaging with identical footprint (6.20mm x 6.20mm)
• Actuator height and vertical orientation (4.60mm, top actuated)
• Operating force (300gf)
• Switch travel distance (0.50mm)
• Ingress protection rating (IP67)
• Operating temperature range (-40°C to 125°C)
• Mechanical life specification (300,000 cycles)
• Termination style (J Lead)

The KSC243JLFG meets all these criteria and qualifies as a direct substitute. The primary distinction between the main part and substitute is packaging format and product status compliance.

Parameter Comparison

Engineering Selection Recommendations

The KSC243JLFG is the direct substitute for the KSC243J. Both components share identical electrical and mechanical specifications, ensuring functional equivalence in circuit applications.

The KSC243JLFG offers two significant advantages:

1. Active product status ensures ongoing manufacturer support and supply chain availability
2. ROHS3 compliance satisfies current regulatory requirements for new designs and production runs

For applications where RoHS compliance is mandatory or where long-term component availability is critical, the KSC243JLFG is the appropriate selection. The component is available in Tape & Reel packaging, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can KSC243JLFG be used as a direct replacement for KSC243J in existing designs?

A: Yes. Both components are electrically and mechanically identical. The KSC243JLFG maintains the same circuit configuration, contact rating, footprint, actuator specifications, and environmental ratings. Direct substitution is possible without circuit modification.

Q: What is the difference between the bulk packaging of KSC243J and the Tape & Reel packaging of KSC243JLFG?

A: Packaging format affects handling and assembly processes. Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly, while bulk packaging is suitable for manual assembly or lower-volume applications. Both formats contain the same component.

Q: Does the RoHS3 compliance of KSC243JLFG affect electrical performance?

A: No. RoHS3 compliance indicates adherence to material composition restrictions and does not alter electrical or mechanical performance characteristics. The component maintains identical specifications across all functional parameters.

Q: Are there inventory considerations when switching from KSC243J to KSC243JLFG?

A: The KSC243JLFG has significantly higher inventory availability (3212 Pcs) compared to the KSC243J (652 Pcs), supporting consistent supply for production requirements.

Q: What certifications apply to both components?

A: Both the KSC243J and KSC243JLFG carry identical ECCN (EAR99) and HTSUS (8536.50.9031) classifications. Both are REACH Unaffected and carry MSL 1 (Unlimited) moisture sensitivity ratings.