KSC243G Equivalent & Substitute Parts

Part Overview

The KSC243G 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, gull wing termination, and IP67 ingress protection suitable for dust-tight and waterproof applications. The KSC243G is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

KSC243G

C&KIn Stock: 1112KSC243G Datasheet

Current PartRFQ

KSC243GLFG

C&KIn Stock: 1864KSC243GLFG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC243G is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:

Electrical Parameters: Circuit configuration (SPST-NO), contact rating (0.01A @ 32VDC), and switch function (Off-Mom) must be preserved without deviation.

Mechanical Parameters: Mounting type (Surface Mount), actuator height (4.60mm vertical), actuator orientation (Top Actuated), termination style (Gull Wing), outline dimensions (6.20mm x 6.20mm), operating force (300gf), switch travel (0.50mm), and mechanical life (300,000 cycles) must remain constant.

Environmental Parameters: Operating temperature range (-40°C to 125°C) and ingress protection rating (IP67) must be maintained.

Base Product Alignment: All substitutes must share the same base product number (KSC243) within the KSC series.

Parameter Comparison

Engineering Selection Recommendations

The KSC243GLFG serves as a direct functional equivalent to the obsolete KSC243G. All critical electrical and mechanical parameters are identical, ensuring pin-for-pin and footprint compatibility in existing PCB designs.

The primary distinction between these parts is product status and regulatory compliance. The KSC243GLFG is currently in active production status, whereas the KSC243G is obsolete. The KSC243GLFG additionally carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and manufacturing processes.

Packaging differs between the two parts: the KSC243G is supplied in bulk format, while the KSC243GLFG is supplied in Tape & Reel (TR) format. This packaging difference does not affect electrical or mechanical performance and is determined by procurement and assembly requirements.

For new designs or replacement of obsolete inventory, the KSC243GLFG is the appropriate selection. For legacy systems requiring exact original part specifications, the KSC243G remains functionally equivalent where available.

Frequently Asked Questions (FAQ)

Q: Can KSC243GLFG be used as a direct replacement for KSC243G in existing designs?

A: Yes. The KSC243GLFG is electrically and mechanically identical to the KSC243G. All critical parameters—circuit configuration, contact rating, mounting type, actuator dimensions, operating force, ingress protection, and temperature range—are equivalent. PCB footprints and electrical performance are identical.

Q: What is the difference between the bulk packaging of KSC243G and the Tape & Reel packaging of KSC243GLFG?

A: Packaging format does not affect component performance. Bulk packaging is typically used for manual assembly or small-volume procurement, while Tape & Reel format is standard for automated pick-and-place assembly. Selection depends on manufacturing process requirements and volume needs.

Q: Why is KSC243G listed as obsolete?

A: The KSC243G has been discontinued by the manufacturer. The KSC243GLFG, which maintains identical functional specifications, is the active production equivalent and is recommended for all new designs and ongoing procurement.

Q: Does the ROHS3 compliance of KSC243GLFG affect its electrical performance compared to the non-compliant KSC243G?

A: No. ROHS3 compliance is a regulatory and environmental certification that does not alter electrical or mechanical performance. Both parts operate identically within their specified parameters.

Q: Are there any compatibility issues when substituting KSC243GLFG for KSC243G in high-reliability applications?

A: No compatibility issues exist. Both parts meet the same electrical and mechanical specifications. The KSC243GLFG, being in active production with current compliance certifications, is suitable for high-reliability applications.