Tactile Switches

Image Part Number Description / PDF Quantity Rfq
KSC222J LFS

KSC222J LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSL0M312LFT

KSL0M312LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

K5V1WS43T

K5V1WS43T

C&K

SWITCH TACTILE SPDT 0.1A 32V

246

ITS13FR1ST

ITS13FR1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

426

KMR441NG ULC LFS

KMR441NG ULC LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

38362

KST241JLFS

KST241JLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

776

PTS125SM122LFS

PTS125SM122LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

5557

PTS645SK43SMTR92 LFS

PTS645SK43SMTR92 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

33

KSC641GLFS

KSC641GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

12509

KST241GLFS

KST241GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

2136

KT11B1JM34LFS

KT11B1JM34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

1316

KMR421NGLFS

KMR421NGLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS810 SJK 250 SMTR LFS

PTS810 SJK 250 SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 16V

32586

KSC401G 50SH LFS

KSC401G 50SH LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSA0V511 LFTR

KSA0V511 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSA0V211 ACTION.H2.9 LFT

KSA0V211 ACTION.H2.9 LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

RS-187R05A2-DS MT RT

RS-187R05A2-DS MT RT

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

3897

PTS636 SP43 SMTR LFS

PTS636 SP43 SMTR LFS

C&K

TACT 6.0 X 3.5, 5.0 MM H, 320GF,

5231

ILS TC250 30

ILS TC250 30

C&K

TOP ACTUATED ILLUMINATED TACT,25

995

K5V1RD43T

K5V1RD43T

C&K

SWITCH TACTILE SPDT 0.1A 32V

648

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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