Tactile Switches

Image Part Number Description / PDF Quantity Rfq
K5ATWH43GP

K5ATWH43GP

C&K

SWITCH TACTILE SPST-NO 0.1A 32V

3461

PTS635SH50LFS

PTS635SH50LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

1032

KSA0A211 LFTR

KSA0A211 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

10789

PTS525SM08SMTR LFS

PTS525SM08SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

PTS645VM58-2 LFS

PTS645VM58-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

9894

ILS TB250 30

ILS TB250 30

C&K

TOP ACTUATED ILLUMINATED TACT,25

969

PTS840 GKP SMTR LFS

PTS840 GKP SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

47385

KSR211GLFS

KSR211GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

ITS40FV1ST

ITS40FV1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

1037

PTS636 SM43 SMTR LFS

PTS636 SM43 SMTR LFS

C&K

TACT 6.0 X 3.5, 4.3 MM H, 180GF,

5080

KSL0M412LFT

KSL0M412LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSL1A211LFT

KSL1A211LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

484

ILS TA180 30

ILS TA180 30

C&K

TOP ACTUATED ILLUMINATED TACT,18

967

KSL0M411 LFTR

KSL0M411 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

973

KSJ0M411LFT

KSJ0M411LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

EDSAC0LFS

EDSAC0LFS

C&K

SWITCH TACTILE SPST-NO 0.1A 100V

0

KT11P4SM34LFS

KT11P4SM34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

639

EDM650AUSC0 LFG

EDM650AUSC0 LFG

C&K

SWITCH TACT SPST-NO 0.05A 100V

1963

KMT 033 NGJ LHG

KMT 033 NGJ LHG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

10330

KSA0M432LFT

KSA0M432LFT

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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