KSL1M211 Equivalent & Substitute Parts

Part Overview

The KSL1M211 is a tactile switch manufactured by C&K, featuring SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration with a contact rating of 0.05A at 32VDC. This component is designed for through-hole mounting with top actuation and includes a grounding pin for enhanced reliability. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

KSL1M211

C&KIn Stock: 845KSL1M211 Datasheet

Current PartRFQ

TL6105DF160QP

E-SwitchIn Stock: 1314TL6105DF160QP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSL1M211 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (momentary)
• Contact rating minimum: 0.05A @ 32VDC or higher voltage rating
• Mounting type: Through Hole
• Actuator orientation: Top Actuated
• Termination style: PC Pin
• Outline compatibility: Similar footprint dimensions (7.40mm x 7.40mm baseline)

Functional Equivalence Parameters:

• Operating force range: 130gf baseline (tolerance band: 120-170gf acceptable)
• Switch travel: 0.50mm baseline (tolerance band: 0.25-0.75mm acceptable)
• Mechanical life: 500,000 cycles minimum
• Operating temperature: -40°C ~ 90°C minimum coverage
• Ingress protection: IP60 or equivalent sealing

The TL6105DF160QP from E-Switch meets these substitution criteria with the following alignment: identical circuit configuration (SPST-NO), higher voltage rating (50VDC vs. 32VDC), compatible through-hole mounting, top actuation, PC pin termination, and similar outline dimensions (7.20mm x 7.20mm). Operating force (160gf) and switch travel (0.25mm) fall within acceptable functional ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Path:

The TL6105DF160QP is the qualified substitute for the KSL1M211. Selection of this component is supported by the following engineering factors:

Electrical Compatibility: The substitute's 50VDC contact rating exceeds the original 32VDC specification, providing margin for voltage transients and design flexibility. Both components maintain identical 0.05A current handling at their respective voltage ratings.

Mechanical Compatibility: Through-hole mounting, top actuation, PC pin termination, and similar outline dimensions (7.20mm x 7.20mm vs. 7.40mm x 7.40mm) ensure PCB layout compatibility with minimal redesign. Actuator height differential (10.00mm vs. 9.90mm) is negligible for mechanical clearance.

Operational Differences Requiring Assessment:

• Mechanical Life: The substitute is rated for 300,000 cycles versus the original 500,000 cycles. Applications requiring extended cycle life beyond 300,000 operations must be evaluated against actual duty cycle requirements.
• Switch Travel: The substitute features 0.25mm travel versus 0.50mm on the original. This reduced travel may affect tactile feedback characteristics in user-facing applications.
• Operating Temperature Upper Limit: The substitute's maximum operating temperature is 85°C versus 90°C on the original. Thermal design margins must be verified for high-temperature environments.

Compliance Advantages:

The TL6105DF160QP is ROHS3 compliant and actively manufactured, addressing the obsolescence status of the KSL1M211. The substitute's fully sealed design provides enhanced environmental protection compared to the original IP60 rating.

Frequently Asked Questions (FAQ)

Q: Can the TL6105DF160QP directly replace the KSL1M211 without PCB modifications?

A: The TL6105DF160QP is mechanically and electrically compatible for direct substitution in most applications. The outline dimensions are similar (7.20mm x 7.20mm vs. 7.40mm x 7.40mm), and both components use identical through-hole PC pin termination. No PCB layout changes are required. However, verify that your application's mechanical clearance and tactile feedback requirements accommodate the substitute's 0.25mm switch travel (versus 0.50mm on the original).

Q: What is the impact of the lower mechanical life rating on the substitute?

A: The TL6105DF160QP is rated for 300,000 mechanical cycles compared to 500,000 cycles on the KSL1M211. For applications with duty cycles below 300,000 operations over the component's service life, this difference is not a limiting factor. Applications requiring extended cycle life must calculate actual cycle count based on actuation frequency and service duration to determine if the substitute meets reliability requirements.

Q: Are there temperature limitations when using the TL6105DF160QP?

A: The substitute operates across -40°C to 85°C, compared to -40°C to 90°C for the original. For applications operating near or above 85°C, thermal margin analysis is required. If your design operates consistently below 85°C, the substitute presents no temperature-related constraints.

Q: How does the reduced switch travel affect user experience?

A: The TL6105DF160QP features 0.25mm travel versus 0.50mm on the KSL1M211. This shorter actuation distance may result in reduced tactile feedback. For applications where tactile confirmation is critical to user interface design, prototype testing is recommended to confirm that the substitute's tactile characteristics meet application requirements.

Q: What are the compliance advantages of switching to the TL6105DF160QP?

A: The TL6105DF160QP is ROHS3 compliant and actively manufactured by E-Switch, whereas the KSL1M211 is obsolete and RoHS non-compliant. Adoption of the substitute ensures compliance with current environmental regulations and provides long-term supply chain stability through an active product line.

Q: Is the higher voltage rating of the substitute a concern?

A: No. The TL6105DF160QP's 50VDC rating is a design advantage, providing additional voltage margin above the original 32VDC specification. This higher rating does not create compatibility issues in circuits designed for 32VDC operation and offers protection against transient overvoltage conditions.