Tactile Switches

Image Part Number Description / PDF Quantity Rfq
PTS636 SP50 LFS

PTS636 SP50 LFS

C&K

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

4510

PTS645SM95-2 LFS

PTS645SM95-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

884

KT11P2SA1M34LFS

KT11P2SA1M34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

4907

RS285G05A2URT

RS285G05A2URT

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

18284

KMR243GLFG

KMR243GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

0

PTS840 ESD GKP SMTR LFS

PTS840 ESD GKP SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KSI0V011 LFTR

KSI0V011 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

245

K5V4GN43G

K5V4GN43G

C&K

SWITCH TACTILE SPDT 0.1A 32V

329

KSA0M311 LFTR

KSA0M311 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC441G DCT 70SH LFS

KSC441G DCT 70SH LFS

C&K

TACT 6.2 X 6.2, 5.2 MM H, 4.75N,

5129

PTS820 J20K SMTR LFS

PTS820 J20K SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

PTS645SK70-2 LFS

PTS645SK70-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

709

KSA1A211 LFTR

KSA1A211 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KMR231GLFS

KMR231GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

10163

ILS TA180 10

ILS TA180 10

C&K

TOP ACTUATED ILLUMINATED TACT,18

922

KMT071 NGJ LHS

KMT071 NGJ LHS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

TLS A 070J LFS

TLS A 070J LFS

C&K

SWITCH TACT 7N J LEADS SMT SOFT

16895

KSC841JOLLFS

KSC841JOLLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

26361

KSR251GLFS

KSR251GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

ITS23FV3SR

ITS23FV3SR

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

542

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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