KSA1M431LFT Equivalent & Substitute Parts

Part Overview

The KSA1M431LFT is a tactile switch manufactured by C&K, featuring SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration with a contact rating of 0.01A at 32VDC. This through-hole mounted switch is designed for applications requiring momentary actuation with top-mounted operation. The product is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Substiute Parts

KSA1M431LFT

C&KIn Stock: 885KSA1M431LFT Datasheet

Current PartRFQ

KSA1M431 LFTR

C&KIn Stock: 939KSA1M431 LFTR Datasheet

DirectRFQ

TL6105AF160QP

E-SwitchIn Stock: 737TL6105AF160QP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KSA1M431LFT are classified based on electrical and mechanical compatibility within the tactile switch category. The substitution logic is determined by the following critical parameters:

Direct Equivalent Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (momentary)
• Mounting type: Through Hole
• Termination style: PC Pin
• Actuator orientation: Top Actuated
• Features: Grounding Pin

Acceptable Variation Parameters:

• Contact rating voltage and current (must meet or exceed application requirements)
• Actuator height and outline dimensions (within mechanical PCB layout constraints)
• Operating force (within user actuation comfort range)
• Switch travel distance (affects tactile feedback)
• Mechanical life cycles (application-dependent durability requirement)
• Operating temperature range (application environment dependent)

KSA1M431 LFTR is classified as a direct manufacturer equivalent, sharing identical electrical specifications and mechanical form factor with the main part, with the primary difference being packaging format (Bulk vs. standard packaging) and active product status.

TL6105AF160QP is classified as a similar substitute from E-Switch, offering enhanced electrical ratings (0.05A @ 50VDC vs. 0.01A @ 32VDC), improved mechanical life (300,000 cycles vs. 100,000 cycles), and sealed construction, with trade-offs in operating force (160gf vs. 300gf) and switch travel (0.25mm vs. 0.60mm).

Parameter Comparison

Engineering Selection Recommendations

KSA1M431 LFTR is the primary substitute for KSA1M431LFT. Both parts share identical electrical and mechanical specifications, with KSA1M431 LFTR maintaining active product status and availability. This part is suitable for direct replacement in all applications where the original part was specified. The only distinction is packaging format (Bulk), which does not affect electrical or mechanical performance.

TL6105AF160QP is an alternative substitute from E-Switch suitable for applications where enhanced electrical ratings and extended mechanical life are beneficial. This part is appropriate for designs that can accommodate the following parameter differences: reduced operating force (160gf vs. 300gf), reduced switch travel (0.25mm vs. 0.60mm), and reduced maximum operating temperature (85°C vs. 125°C). The TL6105AF160QP offers superior contact rating (0.05A @ 50VDC) and mechanical durability (300,000 cycles), making it suitable for higher-stress applications within the specified temperature constraints.

Both substitute parts maintain ROHS3 compliance and are available in active inventory, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can KSA1M431 LFTR be used as a direct replacement for KSA1M431LFT?

A: Yes. Both parts are electrically and mechanically identical, with KSA1M431 LFTR being the active equivalent. The primary difference is packaging format (Bulk vs. standard), which does not affect performance or compatibility.

Q: What are the key differences between KSA1M431LFT and TL6105AF160QP?

A: The TL6105AF160QP offers higher contact ratings (0.05A @ 50VDC vs. 0.01A @ 32VDC) and extended mechanical life (300,000 cycles vs. 100,000 cycles). However, it features reduced operating force (160gf vs. 300gf), shorter switch travel (0.25mm vs. 0.60mm), and a lower maximum operating temperature (85°C vs. 125°C). Outline dimensions are also slightly smaller (7.20mm x 7.20mm vs. 7.40mm x 7.40mm).

Q: Is TL6105AF160QP suitable for applications requiring 125°C operation?

A: No. The TL6105AF160QP has a maximum operating temperature of 85°C. For applications requiring operation above 85°C, KSA1M431 LFTR is the appropriate substitute, as it maintains the original part's 125°C maximum operating temperature.

Q: What is the impact of reduced operating force on switch selection?

A: Operating force affects user actuation effort. The TL6105AF160QP requires 160gf of force compared to 300gf for the original part. This results in lighter actuation, which may be preferable in some applications but requires evaluation against specific user interface requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both KSA1M431 LFTR and TL6105AF160QP are ROHS3 compliant, maintaining regulatory compliance with the original part.

Q: What packaging options are available for these substitutes?

A: KSA1M431 LFTR is available in Bulk packaging. TL6105AF160QP is available in Tube packaging. Packaging selection should be based on procurement and assembly requirements.