Tactile Switches

Image Part Number Description / PDF Quantity Rfq
PTS645VK31LFS

PTS645VK31LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSF0A511 LFTR

KSF0A511 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC461JST2LFS

KSC461JST2LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS645SK50JSMTR92 LFS

PTS645SK50JSMTR92 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

9613

KSA0M931 LFTR

KSA0M931 LFTR

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

KMR423NGULCLFG

KMR423NGULCLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

KSC821GOLLFS

KSC821GOLLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC421J 70SH LFS PF

KSC421J 70SH LFS PF

C&K

TACT 6.2 X 6.2, 5.1 MM H, 1.7N,

1593

KSC471GLFS

KSC471GLFS

C&K

SWITCH TACTILE

0

ILS TA250 10

ILS TA250 10

C&K

TOP ACTUATED ILLUMINATED TACT,25

956

KSC421G 70SH LFS PF

KSC421G 70SH LFS PF

C&K

TACT 6.2 X 6.2, 5.1 MM H, 1.7N,

5603

ILS TC180 40

ILS TC180 40

C&K

TOP ACTUATED ILLUMINATED TACT,18

999

PTS125SJM732LFS

PTS125SJM732LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

RS014R05B1SMA10

RS014R05B1SMA10

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSL1M511 LFTR

KSL1M511 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS645SM43JSMTR92 LFS

PTS645SM43JSMTR92 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

9741

RS022R05B0

RS022R05B0

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSC471J 70SH LFS PF

KSC471J 70SH LFS PF

C&K

TACT 6.2 X 6.2, 5.1 MM H, 4.0N,

1434

RS014R05H1SMA10

RS014R05H1SMA10

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSC523GR0HS

KSC523GR0HS

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

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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