KSC443J 70 SH Equivalent & Substitute Parts

Part Overview

The KSC443J 70 SH 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 tactile feedback with minimal contact current. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications.

Substiute Parts

KSC443J 70 SH

C&KIn Stock: 1065KSC443J 70 SH Datasheet

Current PartRFQ

KSC443J 70SH LFG

C&KIn Stock: 8787KSC443J 70SH LFG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSC443J 70 SH is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPST-NO)
• Contact rating (0.01A @ 32VDC)
• Mounting type (Surface Mount)
• Outline dimensions (6.20mm x 6.20mm)
• Actuator height (5.20mm)
• Actuator orientation (Top Actuated)
• Termination style (J Lead)
• Switch travel (0.75mm)
• Ingress protection (IP67)
• Operating temperature range (-40°C ~ 125°C)
• Mechanical life (300,000 Cycles)

The KSC443J 70SH LFG meets all these criteria and is classified as a direct substitute. This part maintains identical electrical and mechanical specifications while differing only in packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The KSC443J 70SH LFG is the direct substitute for the obsolete KSC443J 70 SH. Both parts share identical electrical and mechanical specifications, ensuring functional equivalence in circuit applications. The substitute part offers the following advantages:

• Active product status with confirmed availability (8,684 pcs in stock versus 1,033 pcs for the obsolete part)
• ROHS3 compliance, meeting current environmental regulations
• Tape & Reel packaging suitable for automated assembly processes
• Identical contact rating, switching characteristics, and environmental protection rating

The 20gf difference in operating force (300gf versus 320gf) falls within acceptable tactile switch design tolerances and does not affect functional compatibility for the specified application parameters.

Frequently Asked Questions (FAQ)

Q: Can the KSC443J 70SH LFG be used as a direct replacement for the KSC443J 70 SH?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters including circuit configuration, contact rating, mounting type, dimensions, actuator specifications, and environmental protection rating. The substitute part is actively manufactured and available.

Q: What is the significance of the operating force difference (320gf vs. 300gf)?

A: The 20gf variance represents a 6.25% difference within normal tactile switch manufacturing tolerances. This difference does not affect functional compatibility or circuit performance for applications specified at 0.01A @ 32VDC.

Q: Why is the main part listed as obsolete?

A: The KSC443J 70 SH is no longer in active production. The KSC443J 70SH LFG represents the current production equivalent within the same KSC series, ensuring continued availability and supply chain continuity.

Q: Does packaging format affect electrical or mechanical performance?

A: No. The difference between bulk packaging and Tape & Reel (TR) packaging is logistical only. Both formats contain identical components with identical specifications. Tape & Reel packaging is optimized for automated assembly processes.

Q: Is RoHS compliance a functional requirement for substitution?

A: RoHS compliance is a regulatory and environmental requirement, not a functional electrical parameter. The ROHS3-compliant substitute part meets current environmental standards while maintaining full functional equivalence to the non-compliant original part.

Q: Are there any circuit design modifications required when switching to the substitute part?

A: No. The KSC443J 70SH LFG maintains identical electrical characteristics and physical dimensions, requiring no circuit modifications or PCB redesign.