KSR221G LFS Tactile Switches by C&K – Compact, Long-Life Switches for Reliable Human-Machine Interfaces
The Tactile Switches KSR221G LFS by C&K are precision-engineered for compact applications requiring low-profile, long-life, and highly reliable user interface solutions. These tactile switches are designed for surface mounting and are widely used in automotive key fobs, industrial controls, medical devices, and consumer electronics.
In this blog, we’ll cover the key specifications, features, wiring details, real-life use case, and how to purchase or download the datasheet from Xon Electronics. If you need a dependable tactile switch for space-constrained designs, the KSR221G LFS Tactile Switches by C&K are a leading choice.
Technical Specifications of KSR221G LFS
-
Manufacturer: C&K Switches
-
Part Number: KSR221G LFS
-
Type: Surface Mount Tactile Switch
-
Mounting Style: SMD (Surface Mount Device)
-
Operating Force: 2.6 N
-
Contact Rating: 50mA @ 32V DC
-
Switch Travel: 0.2 mm
-
Lifespan: Up to 300,000 cycles
-
Actuator Style: Round
-
Dimensions: 6.2 x 6.2 x 2.9 mm
-
RoHS Compliant: Yes
-
Category: Switches, Tactile Switches
The KSR221G LFS meets rigorous quality and reliability standards, including RoHS compliance, making it suitable for sensitive and high-volume applications.
Key Features of KSR221G LFS Tactile Switches
-
Ultra-Compact Design – Ideal for tight spaces and small enclosures
-
High Reliability – Rated for up to 300K actuation cycles
-
Low Profile (2.9 mm) – Suitable for slim form-factor designs
-
Good Tactile Feedback – Delivers crisp and responsive operation
-
Lead-Free & RoHS Compliant – Environmentally friendly and globally accepted
These features make the Tactile Switches by C&K a trusted component for manufacturers aiming for quality and long-term reliability in user interface controls.
Applications of KSR221G LFS
The KSR221G LFS Tactile Switches by C&K are used in a wide variety of industries, including:
-
Automotive Electronics (Key fobs, dashboard controls)
-
Medical Equipment (Portable monitors, diagnostic tools)
-
Consumer Electronics (Wearables, remote controls, Bluetooth devices)
-
Industrial Control Panels
-
Home Appliances (Smart thermostats, coffee machines)
Whether you're designing a compact controller or an intuitive HMI interface, these Tactile Switches by C&K provide lasting performance.
Wiring and Connection Overview
The KSR221G LFS is a surface-mount switch with the following basic connection layout:
[PCB Pad Layout] — 4-terminal SMD footprint
[?] [?]
\_____/
/ \
[?] [?]
The switch is activated with a mechanical press on the actuator, making contact between two terminals. Ensure proper reflow soldering techniques during PCB assembly to ensure long-term functionality.
Use Case Scenario: Automotive Remote Control Design
Scenario: A car manufacturer needed tactile switches for a next-gen key fob design that would withstand repeated usage and temperature fluctuations.
Problem: Earlier switch models wore out quickly and failed during cold-weather tests.
Solution: By switching to KSR221G LFS Tactile Switches by C&K, the design team benefited from a more robust and compact switch that passed 300K cycle tests and operated across temperature extremes.
Result: Enhanced product reliability, fewer field failures, and a better user experience for drivers.
Download Datasheet for KSR221G LFS
Want detailed mechanical drawings, environmental specs, or mounting guidance?
Download KSR221G LFS Datasheet from Xon Electronics
(Insert product link when available)
Why Buy from Xon Electronics?
Xon Electronics is your reliable source for authentic Tactile Switches by C&K, including the popular KSR221G LFS model:
- 100% Genuine C&K Switches
-
Global Shipping – USA, Europe, India, Australia & more
-
Competitive Pricing for OEMs and Large Orders
-
Technical Support & Integration Help
-
Secure Online Purchasing Platform
Visit www.xonelec.com and experience quality service for all your switch sourcing needs.
Conclusion
The KSR221G LFS Tactile Switches by C&K are compact, rugged, and built for long-lasting performance in a wide range of electronic systems. From automotive keypads to medical tools and smart home devices, they are an excellent choice for engineers and designers seeking dependable tactile feedback and space-efficient form factors.
Order now from Xon Electronics and streamline your product's user interface with reliable Tactile Switches by C&K.
FAQs – KSR221G LFS Tactile Switch
Q1. What is the operating force of the KSR221G LFS?
It requires approximately 2.6 Newtons to actuate.
Q2. Is the switch suitable for SMD reflow soldering?
Yes, it is surface-mount compatible and designed for reflow soldering.
Q3. How long does it last?
It is rated for up to 300,000 actuation cycles.
Q4. Where can I buy it globally?
You can purchase it from www.xonelec.com with worldwide shipping available.
Q5. Does it support RoHS compliance?
Yes, the KSR221G LFS is RoHS compliant and environmentally safe.