KSA0M511LFT Equivalent & Substitute Parts

Part Overview

The KSA0M511LFT 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 through-hole mounted switch features top actuation, a 4.70mm actuator height, and an operating force of 500gf. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Substiute Parts

KSA0M511LFT

C&KIn Stock: 1025KSA0M511LFT Datasheet

Current PartRFQ

KSA0M511 LFTR

C&KIn Stock: 6921KSA0M511 LFTR Datasheet

DirectRFQ

TL6100AF130QP

E-SwitchIn Stock: 4881TL6100AF130QP Datasheet

SimilarRFQ

TL6100AF160QP

E-SwitchIn Stock: 5975TL6100AF160QP Datasheet

SimilarRFQ

TL6100AF300QP

E-SwitchIn Stock: 5835TL6100AF300QP Datasheet

SimilarRFQ

TL6100BF160QP

E-SwitchIn Stock: 872TL6100BF160QP Datasheet

SimilarRFQ

TL6100BF300RP

E-SwitchIn Stock: 998TL6100BF300RP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the KSA0M511LFT is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (Momentary)
• Mounting type: Through Hole
• Actuator orientation: Top Actuated
• Termination style: PC Pin
• Contact current rating: 0.05A minimum

Secondary Compatibility Criteria:

• Actuator height off PCB: 4.70mm (direct mechanical fit)
• Outline dimensions: 7.40mm x 7.40mm (PCB footprint compatibility)
• Operating temperature range: Must encompass or match -40°C ~ 90°C
• Ingress protection: IP60 or equivalent

Voltage Rating Consideration: The KSA0M511LFT operates at 32VDC. Substitute parts rated at lower voltages (12VDC) are electrically compatible for applications operating below their rated voltage, provided the circuit design does not require the full 32VDC rating.

The direct equivalent is KSA0M511 LFTR (same manufacturer, same series, active product status). E-Switch TL6100 series parts provide functional substitutes with variations in operating force, mechanical life, and actuator height.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Recommended for Obsolescence): KSA0M511 LFTR is the primary substitute for KSA0M511LFT. Both parts are manufactured by C&K, belong to the KSA series, and share identical electrical and mechanical specifications. The KSA0M511 LFTR is active in production with ROHS3 compliance, making it the preferred choice for design continuity and long-term availability.

Alternative Substitutes (E-Switch TL6100 Series): The E-Switch TL6100 series parts provide functional alternatives when KSA0M511 LFTR is unavailable. All TL6100 variants maintain SPST-NO circuit configuration, Off-Mom function, 0.05A contact rating, through-hole mounting, and top actuation. All are ROHS3 compliant and REACH unaffected.

Voltage Rating Consideration: TL6100 series parts are rated at 12VDC, compared to the KSA0M511LFT rating of 32VDC. These substitutes are suitable for applications operating at 12VDC or lower. Applications requiring the full 32VDC rating must use KSA0M511 LFTR.

Mechanical Differences:

• TL6100AF130QP, TL6100AF160QP, TL6100AF300QP: 4.70mm actuator height (matches KSA0M511LFT)
• TL6100BF160QP, TL6100BF300RP: 5.20mm actuator height (0.50mm taller, may affect enclosure clearance)
• All TL6100 parts: 7.20mm x 7.20mm outline (0.20mm smaller than KSA0M511LFT, compatible with same footprint)

Operating Force Selection:

• KSA0M511LFT and KSA0M511 LFTR: 500gf operating force
• TL6100AF130QP: 130gf (lightest actuation)
• TL6100AF160QP, TL6100BF160QP: 160gf
• TL6100AF300QP, TL6100BF300RP: 300gf (closest to original 500gf)

Temperature Range: KSA0M511LFT operates to 90°C; all TL6100 substitutes operate to 85°C. Applications requiring operation above 85°C must use KSA0M511 LFTR.

Mechanical Life: KSA0M511LFT and KSA0M511 LFTR: 100,000 cycles. TL6100 series offers extended mechanical life (500,000 to 1,000,000 cycles), providing improved durability for high-cycle applications.

Frequently Asked Questions (FAQ)

Q: Can TL6100 series switches replace KSA0M511LFT in a 32VDC circuit? A: No. TL6100 parts are rated at 12VDC maximum. They are electrically compatible only for applications operating at 12VDC or lower. For 32VDC applications, use KSA0M511 LFTR.

Q: What is the difference between TL6100AF and TL6100BF variants? A: The primary difference is actuator height. TL6100AF variants have 4.70mm height (matching KSA0M511LFT), while TL6100BF variants have 5.20mm height. Both series share identical electrical specifications and mechanical life ratings for their respective operating force values.

Q: Are all substitute parts RoHS compliant? A: Yes. KSA0M511 LFTR is ROHS3 compliant. All E-Switch TL6100 series parts are ROHS3 compliant. The original KSA0M511LFT is RoHS compliant (earlier standard).

Q: Which TL6100 variant most closely matches the original KSA0M511LFT? A: TL6100AF160QP or TL6100AF300QP provide the closest mechanical fit (4.70mm actuator height, 7.20mm x 7.20mm outline). TL6100AF300QP offers operating force (300gf) closer to the original 500gf, though still lower. For identical operating force, use KSA0M511 LFTR.

Q: What packaging options are available? A: KSA0M511LFT: Tape & Reel. KSA0M511 LFTR: Bulk. TL6100AF130QP, TL6100AF160QP, TL6100AF300QP, TL6100BF160QP: Tube. TL6100BF300RP: Packaging not specified. Verify packaging requirements with supplier.

Q: Can I use a TL6100 part in an application requiring IP60 ingress protection? A: TL6100 series ingress protection rating is not specified in available data. KSA0M511LFT and KSA0M511 LFTR both provide IP60 (Dust Tight) rating. For applications requiring documented IP60 protection, use KSA0M511 LFTR.

Q: What is the mechanical life difference between KSA0M511 LFTR and TL6100 series? A: KSA0M511 LFTR: 100,000 cycles. TL6100AF130QP and TL6100BF160QP: 1,000,000 cycles (10x longer). TL6100AF160QP: 1,000,000 cycles. TL6100AF300QP and TL6100BF300RP: 500,000 cycles (5x longer). TL6100 series provides extended mechanical life for high-cycle applications.

Q: Is the 0.20mm difference in outline dimensions (7.40mm vs 7.20mm) significant? A: The TL6100 series 7.20mm x 7.20mm outline is slightly smaller than the KSA0M511LFT 7.40mm x 7.40mm outline. Both fit the same through-hole PCB footprint. Verify PCB layout clearances if mechanical tolerance is critical.