Tactile Switches

Image Part Number Description / PDF Quantity Rfq
KSA0V431 LFTR

KSA0V431 LFTR

C&K

SWITCH TACTILE SPST-NO 0.01A 50V

1127

KMR241G ULC LFS

KMR241G ULC LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

26877

PTS645VL58-2 LFS

PTS645VL58-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

3209

PTS125SM85-2 LFS

PTS125SM85-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

12431

PTS810 SJG 250 SMTR LFS

PTS810 SJG 250 SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 16V

281714

KMR441G LFS

KMR441G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC151GLFS

KSC151GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KMT023NGJLHG

KMT023NGJLHG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

KSC343GLFG

KSC343GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

1223

PTS645TH432LFS

PTS645TH432LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSC223GLFG

KSC223GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

PTS841 ESD GM SMTR LFS

PTS841 ESD GM SMTR LFS

C&K

TACT 3.6 X 3.5, 1.25 MM H, 180GF

2961

ATS2D1G NC LFS

ATS2D1G NC LFS

C&K

SWITCH TACTILE SPST-NC 50MA 32V

7654

PTS645TL70 LFS

PTS645TL70 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

8726

KMR223GLFG

KMR223GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

8908

PTS820 J20M SMTR LFS

PTS820 J20M SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

92829

PTS645SL70SMTR92LFS

PTS645SL70SMTR92LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KST221GLFS

KST221GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

964

KSR222G LFS

KSR222G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

1557

PTS645SM50-2 LFS

PTS645SM50-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

5843

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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