KSL1M431LFT Equivalent & Substitute Parts

Part Overview

The KSL1M431LFT 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, 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 essential for ongoing design support and procurement continuity.

Substiute Parts

KSL1M431LFT

C&KIn Stock: 1033KSL1M431LFT Datasheet

Current PartRFQ

KSL1M431 LFTR

C&KIn Stock: 1185KSL1M431 LFTR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The KSL1M431LFT has one direct equivalent substitute: KSL1M431 LFTR. Both parts share identical electrical and mechanical specifications within the allowed substitution parameters for this product category. The substitution is valid based on the following critical parameters:

• Circuit configuration: SPST-NO (identical)
• Contact rating: 0.01A @ 32VDC (identical)
• Switch function: Off-Mom momentary operation (identical)
• Mounting type: Through Hole (identical)
• Outline dimensions: 7.40mm x 7.40mm (identical)
• Operating force: 300gf (identical)
• Switch travel: 0.60mm (identical)
• Mechanical life: 100,000 Cycles (identical)
• Operating temperature range: -40°C ~ 125°C (identical)
• Ingress protection: IP60 - Dust Tight (identical)
• Termination style: PC Pin (identical)
• RoHS and REACH compliance: Identical

The primary difference between these parts is the actuator height specification, which varies between the main part and the substitute. This parameter difference must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The KSL1M431 LFTR is the direct substitute for the discontinued KSL1M431LFT. Selection of this substitute is supported by:

• Identical electrical specifications (SPST-NO circuit, 0.01A @ 32VDC contact rating)
• Identical mechanical specifications (100,000 cycle life, 300gf operating force, 0.60mm travel)
• Identical environmental specifications (IP60 ingress protection, -40°C ~ 125°C operating range)
• Identical compliance certifications (ROHS3 Compliant, REACH Unaffected)
• Active product status with confirmed inventory availability (1102 Pcs in stock)

The actuator height difference (9.90mm vs. 4.70mm) represents the only dimensional variance. This difference must be evaluated against PCB layout constraints and mechanical clearance requirements specific to the application. Both parts maintain identical footprint dimensions (7.40mm x 7.40mm) and termination style (PC Pin), ensuring compatibility with existing through-hole mounting patterns.

Frequently Asked Questions (FAQ)

Q: Can KSL1M431 LFTR be used as a direct replacement for KSL1M431LFT?

A: Yes, KSL1M431 LFTR is electrically and mechanically equivalent to KSL1M431LFT across all critical parameters including circuit configuration, contact rating, switch function, operating force, mechanical life, and environmental specifications. The actuator height difference (9.90mm vs. 4.70mm) must be evaluated for application-specific clearance requirements.

Q: What is the primary difference between these two parts?

A: The actuator height off PCB differs: KSL1M431LFT has a 9.90mm actuator height, while KSL1M431 LFTR has a 4.70mm actuator height. All other electrical, mechanical, and environmental specifications are identical.

Q: Why is KSL1M431LFT discontinued?

A: The KSL1M431LFT is discontinued at DiGi Electronics. The active equivalent KSL1M431 LFTR provides continued availability for this switch specification.

Q: Are the packaging formats different?

A: Yes. KSL1M431LFT is packaged in tape format, while KSL1M431 LFTR is supplied in Bulk packaging. Both represent the same electrical and mechanical component.

Q: Do both parts meet the same compliance standards?

A: Yes. Both KSL1M431LFT and KSL1M431 LFTR are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8536.50.9031) classifications.

Q: What is the impact of the actuator height difference on PCB design?

A: The 5.20mm actuator height difference affects vertical clearance above the PCB. Applications with height-constrained enclosures or overlapping components may require design evaluation. The footprint dimensions (7.40mm x 7.40mm) and mounting type (Through Hole) remain identical.