KSL1M410 Equivalent & Substitute Parts

Part Overview

The KSL1M410 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 with a standard actuator and is designed for applications requiring momentary contact operation. The product is currently obsolete, making identification of compatible substitute components essential for ongoing maintenance, repair, and new design implementations where legacy compatibility is required.

Substiute Parts

KSL1M410

C&KIn Stock: 1145KSL1M410 Datasheet

Current PartRFQ

TL6105DF300QP

E-SwitchIn Stock: 770TL6105DF300QP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSL1M410 is determined by strict alignment of the following critical parameters:

Electrical Compatibility:

• Circuit configuration must remain SPST-NO
• Switch function must be Off-Mom (momentary contact)
• Contact rating voltage must equal or exceed 32VDC
• Contact rating current must equal or exceed 0.05A

Mechanical Compatibility:

• Mounting type must be Through Hole
• Actuator orientation must be Top Actuated
• Actuator height must accommodate PCB layout constraints (nominal 9.90mm)
• Outline dimensions must be compatible with existing footprints (7.40mm x 7.40mm baseline)
• Operating force must be 300gf to maintain tactile feedback consistency
• Termination style must be PC Pin

Environmental & Operational:

• Operating temperature range must encompass or match -40°C ~ 90°C
• Mechanical life rating must support application duty cycle requirements

The TL6105DF300QP from E-Switch meets these substitution criteria with equivalent electrical and mechanical characteristics, with noted differences in specific parameters documented in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TL6105DF300QP (E-Switch)

The TL6105DF300QP is the qualified substitute for the obsolete KSL1M410. Selection is based on the following engineering factors:

Electrical Equivalence: Both components share identical SPST-NO circuit configuration and momentary switch function. The TL6105DF300QP is rated at 0.05A @ 50VDC, which exceeds the KSL1M410 specification of 0.05A @ 32VDC, ensuring electrical compatibility with margin.

Mechanical Compatibility: Both switches feature through-hole mounting with top actuation and 300gf operating force. Dimensional differences are minimal: the TL6105DF300QP outline (7.20mm x 7.20mm) is slightly smaller than the KSL1M410 (7.40mm x 7.40mm), and actuator height variance (10.00mm vs. 9.90mm) is within acceptable tolerance for standard PCB layouts. Both use PC Pin termination.

Compliance & Availability: The TL6105DF300QP is ROHS3 compliant and currently in active production, addressing the obsolescence of the KSL1M410. The substitute meets REACH and EAR99 classifications identical to the original part.

Operational Considerations: The TL6105DF300QP features fully sealed construction compared to the KSL1M410's IP40 rating, providing enhanced environmental protection. The mechanical life rating of 50,000 cycles is lower than the original 100,000 cycles; applications with high-cycle duty requirements should evaluate this parameter against specific use case demands. Operating temperature range is -40°C ~ 85°C, which is 5°C narrower at the upper limit than the original specification.

Frequently Asked Questions (FAQ)

Q: Can the TL6105DF300QP directly replace the KSL1M410 in existing designs?

A: Yes, the TL6105DF300QP is electrically and mechanically compatible with the KSL1M410 for standard applications. Both components share identical circuit configuration (SPST-NO), switch function (Off-Mom), operating force (300gf), and termination style (PC Pin). Dimensional differences are minimal and do not affect standard PCB footprints. However, applications with mechanical life requirements exceeding 50,000 cycles should evaluate the substitute's lower cycle rating.

Q: What are the key differences between these two switches?

A: The primary differences are: (1) Contact voltage rating: TL6105DF300QP is rated 50VDC versus KSL1M410 at 32VDC; (2) Mechanical life: TL6105DF300QP rated 50,000 cycles versus KSL1M410 at 100,000 cycles; (3) Switch travel: TL6105DF300QP has 0.50mm travel versus KSL1M410 at 0.60mm; (4) Sealing: TL6105DF300QP is fully sealed versus KSL1M410 at IP40; (5) Compliance: TL6105DF300QP is ROHS3 compliant while KSL1M410 is RoHS non-compliant; (6) Product status: TL6105DF300QP is active production versus KSL1M410 which is obsolete.

Q: Are there any PCB layout considerations when substituting these parts?

A: The outline dimensions differ slightly: TL6105DF300QP is 7.20mm x 7.20mm while KSL1M410 is 7.40mm x 7.40mm. The substitute is smaller and will fit within existing footprints designed for the original part. Actuator height variance (10.00mm vs. 9.90mm) is negligible for standard through-hole applications. Both components use identical PC Pin termination, so no changes to pad configuration are required.

Q: What is the mechanical life difference and does it matter?

A: The TL6105DF300QP is rated for 50,000 mechanical cycles compared to the KSL1M410's 100,000 cycles. For applications with intermittent or low-frequency actuation (such as user interface buttons or configuration switches), this difference is not significant. Applications requiring continuous or high-frequency cycling should evaluate whether 50,000 cycles meets the intended duty cycle over the product's service life.

Q: Why is the TL6105DF300QP rated for higher voltage?

A: The TL6105DF300QP is rated at 0.05A @ 50VDC compared to the KSL1M410 at 0.05A @ 32VDC. This higher voltage rating reflects the design and construction of the E-Switch component and provides additional margin for applications operating at or near the original 32VDC specification. This difference is advantageous for substitution purposes.

Q: What does "fully sealed" mean for the TL6105DF300QP?

A: The TL6105DF300QP features fully sealed construction, providing enhanced protection against moisture, dust, and contaminants compared to the KSL1M410's IP40 rating. This sealing characteristic makes the substitute suitable for applications with exposure to environmental contaminants or moisture, while maintaining compatibility with standard dry-environment applications.

Q: Are there compliance or certification differences?

A: Yes. The TL6105DF300QP is ROHS3 compliant, meeting current regulatory requirements for restricted substances. The KSL1M410 is RoHS non-compliant, reflecting its obsolete status. Both components are REACH Unaffected and classified as EAR99 for export control purposes. For new designs or applications subject to RoHS compliance requirements, the TL6105DF300QP is the appropriate selection.