KSL0M331LFT Equivalent & Substitute Parts

Part Overview

The KSL0M331LFT 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 through-hole mounted component features top actuation with a 9.90mm actuator height and is designed for applications requiring reliable momentary switching with dust-tight ingress protection (IP60). The part is currently discontinued at DiGi Electronics, making identification of equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

KSL0M331LFT

C&KIn Stock: 725KSL0M331LFT Datasheet

Current PartRFQ

KSL0M331 LFTR

C&KIn Stock: 3017KSL0M331 LFTR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSL0M331LFT is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPST-NO)
• Switch function (Off-Mom momentary operation)
• Contact rating (0.01A @ 32VDC)
• Mounting type (Through Hole)
• Actuator orientation (Top Actuated)
• Termination style (PC Pin)
• Outline dimensions (7.40mm x 7.40mm)
• Operating force (130gf)
• Switch travel (0.50mm)
• Mechanical life (1,000,000 Cycles)
• Operating temperature range (-40°C ~ 125°C)
• Ingress protection (IP60)
• RoHS and REACH compliance status

The KSL0M331 LFTR variant meets all substitution criteria. The primary difference is actuator height off PCB (4.70mm versus 9.90mm), which represents a mechanical variation within the same product family. This difference may impact PCB layout and clearance considerations but does not affect electrical functionality or switching characteristics.

Parameter Comparison

Engineering Selection Recommendations

The KSL0M331 LFTR is the direct substitute for the discontinued KSL0M331LFT. Both parts maintain identical electrical specifications, mechanical life ratings, and compliance certifications (ROHS3, REACH Unaffected). The KSL0M331 LFTR is currently in active production status with higher inventory availability (2908 Pcs versus 706 Pcs), ensuring supply chain continuity.

The actuator height difference (4.70mm versus 9.90mm) is a mechanical design variation that must be evaluated against specific PCB layout and enclosure clearance requirements. This parameter does not affect switching performance, contact rating, or operational characteristics. Selection between these variants depends solely on mechanical fit within the target application.

Frequently Asked Questions (FAQ)

Q: Can KSL0M331 LFTR replace KSL0M331LFT in all applications?

A: Electrical and switching characteristics are identical. Substitution is valid provided the reduced actuator height (4.70mm versus 9.90mm) is compatible with PCB layout and enclosure design. Mechanical clearance must be verified for the specific application.

Q: What is the difference between the two part numbers?

A: Both parts are from the C&K KSL series with identical circuit configuration, contact rating, and operational specifications. The primary difference is actuator height off PCB. The KSL0M331 LFTR is available in bulk packaging and maintains active production status.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both KSL0M331LFT and KSL0M331 LFTR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the mechanical life expectancy?

A: Both parts are rated for 1,000,000 cycles of mechanical operation under specified conditions (130gf operating force, 0.50mm switch travel).

Q: Can these switches be used in high-temperature applications?

A: Yes. Both parts operate across the temperature range of -40°C to 125°C, suitable for industrial and extended-temperature applications.