KSC541J Equivalent & Substitute Parts

Part Overview

The KSC541J 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 or side actuation with a 5.60mm actuator height and sealed design rated IP50 for dust protection. The KSC541J is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The primary substitute addresses RoHS compliance requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

KSC541J

C&KIn Stock: 1117KSC541J Datasheet

Current PartRFQ

KSC541J ROHS

C&KIn Stock: 33390KSC541J ROHS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC541J is determined by strict equivalence across electrical and mechanical parameters. The substitute part KSC541J ROHS maintains identical specifications for circuit configuration (SPST-NO), contact rating (0.05A @ 32VDC), mounting type (Surface Mount), actuator geometry (5.60mm height, 6.20mm x 6.20mm outline), operating force (300gf), switch travel (0.25mm, 0.50mm), mechanical life (10,000 cycles), operating temperature range (-40°C ~ 85°C), ingress protection (IP50), and termination style (J Lead). The critical differentiator is RoHS compliance status: KSC541J is RoHS non-compliant, while KSC541J ROHS is ROHS3 compliant. Both parts share the same base product number (KSC541) and series designation (KSC5), confirming functional and dimensional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The KSC541J ROHS is the direct equivalent substitute for the obsolete KSC541J. Selection between these parts is determined by regulatory and compliance requirements rather than functional differences. The KSC541J ROHS is recommended for new designs and production applications due to its active product status and ROHS3 compliance certification. Both parts maintain identical electrical performance (0.05A @ 32VDC contact rating), mechanical characteristics (5.60mm actuator height, 300gf operating force, 10,000 cycle mechanical life), and environmental specifications (IP50 ingress protection, -40°C ~ 85°C operating range). The KSC541J ROHS is supplied in Tape & Reel packaging, suitable for automated assembly processes. Existing designs using the obsolete KSC541J can transition directly to KSC541J ROHS without circuit or layout modifications.

Frequently Asked Questions (FAQ)

Q: Can KSC541J ROHS be used as a direct replacement for KSC541J? A: Yes. KSC541J ROHS is functionally and mechanically equivalent to KSC541J. All electrical parameters (0.05A @ 32VDC), mechanical specifications (5.60mm height, 6.20mm x 6.20mm outline, 300gf operating force), and environmental ratings (IP50, -40°C ~ 85°C) are identical. The primary difference is RoHS compliance status and product availability.

Q: What is the key difference between KSC541J and KSC541J ROHS? A: The KSC541J is RoHS non-compliant and obsolete, while KSC541J ROHS is ROHS3 compliant and actively manufactured. Both parts share identical functional and dimensional specifications.

Q: Are there packaging differences between these parts? A: The KSC541J packaging is not specified in available data. The KSC541J ROHS is supplied in Tape & Reel (TR) packaging, standard for automated surface mount assembly.

Q: What are the critical parameters for substitution compatibility? A: Substitution compatibility is determined by circuit configuration (SPST-NO), contact rating (0.05A @ 32VDC), mounting type (Surface Mount), actuator height (5.60mm), outline dimensions (6.20mm x 6.20mm), operating force (300gf), switch travel (0.25mm, 0.50mm), mechanical life (10,000 cycles), and operating temperature range (-40°C ~ 85°C).

Q: Can these parts be used in applications requiring RoHS compliance? A: Only KSC541J ROHS meets RoHS compliance requirements. The original KSC541J is RoHS non-compliant and cannot be used in applications with mandatory RoHS certification.

Q: What is the mechanical life expectancy of these switches? A: Both KSC541J and KSC541J ROHS are rated for 10,000 mechanical cycles, with an operating force of 300gf and switch travel of 0.25mm or 0.50mm.