Tactile Switches

Image Part Number Description / PDF Quantity Rfq
KSL0M432LFT

KSL0M432LFT

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

10943

KSR234G LFG

KSR234G LFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

2022

KSS243GLFG

KSS243GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 50V

449

KSC243JLFG

KSC243JLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

19865

NANOT 240 BS

NANOT 240 BS

C&K

SWITCH TACT SMT

7426

KSC321GLFS

KSC321GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

EDSAC1LFS

EDSAC1LFS

C&K

SWITCH TACTILE SPST-NO 0.1A 100V

177

KSC921G LFS

KSC921G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

16316

KMT211G HF LFS

KMT211G HF LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS530GG065SMTRLFS

PTS530GG065SMTRLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

9708

PTS645TH50 LFS

PTS645TH50 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

PTS641TK31SMTR2LFS

PTS641TK31SMTR2LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

893

KSEM31J LFS

KSEM31J LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

K8SR41GLFS

K8SR41GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

4052

KSC221GLFS

KSC221GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

22

KSC941G LFS

KSC941G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

23737

KSC721G LFS

KSC721G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

1148

KSC2 TE 01J LFS

KSC2 TE 01J LFS

C&K

SWITCH TACT SOFT EXT LIFE J LEAD

601

KT11P3SM34LFS

KT11P3SM34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

8179

ITS23FV1ST

ITS23FV1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

942

Tactile Switches

1. Overview

Tactile switches are momentary contact switches designed to provide tactile feedback when actuated. They are fundamental components in human-machine interfaces, enabling precise input registration through mechanical deformation. These switches play a critical role in modern electronics by ensuring reliable user interaction in devices ranging from consumer gadgets to industrial equipment.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
PCB Mount Tactile SwitchesLow profile, solderable terminals, short travel distanceRemote controls, mobile phones
Panel Mount Tactile SwitchesFront-panel installation, threaded bushingIndustrial control panels
Surface Mount Technology (SMT)Miniaturized, automated assembly compatibleWearable devices
Heavy Duty Tactile SwitchesHigh current rating, reinforced contactsMedical equipment

3. Structure and Components

Typical tactile switch construction includes: - Actuator: Dome-shaped plunger with textured surface - Contact System: Gold-plated phosphor bronze contacts - Housing: High-temperature resistant thermoplastic (e.g., LCP) - Spring Mechanism: Stainless steel leaf spring for tactile feedback - Terminals: Solder pins or surface-mount pads

4. Key Technical Specifications

ParameterTypical RangeImportance
Rated Current0.01-0.5ADetermines circuit compatibility
Operating Voltage5-250VDCSafety and insulation requirements
Actuation Force0.5-5.0NUser experience optimization
Electrical Life50,000-500,000 cyclesProduct longevity assessment
Contact Resistance10-100m Signal integrity maintenance

5. Application Fields

Primary industries include: - Consumer Electronics: Keyboards, gaming controllers - Industrial Automation: PLC control panels - Medical Devices: Patient monitoring systems - Automotive: Dashboard controls, steering wheel buttons - Telecommunications: Network equipment interfaces

Case Study: Apple Magic Keyboard uses SMT tactile switches with 0.8mm travel distance and 50cN actuation force for optimal typing experience

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
OmronB3F SeriesIP67 rating, 500,000 cycles life
C&K ComponentsPTS645 SeriesLow profile (3.2mm), RoHS compliant
E-SwitchTL1105 SeriesSurface mount, 0.1A rating
Alps AlpineSKQH SeriesClick-type feedback, 1.5N force

7. Selection Guidelines

Key considerations: - Electrical requirements (current/voltage ratings) - Mechanical specifications (actuation force, travel distance) - Mounting method compatibility (through-hole vs SMT) - Environmental factors (temperature range, ingress protection) - Cost-volume optimization for mass production

8. Industry Trends

Emerging developments include: - Miniaturization for wearable devices (sub-2mm packages) - Enhanced reliability for automotive applications (-40 C to 125 C operation) - Integration with haptic feedback systems - Adoption of eco-friendly materials (halogen-free plastics) - Smart switch development with embedded sensors

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