Tactile Switches

Image Part Number Description / PDF Quantity Rfq
KSR233G LFG

KSR233G LFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

39

KT11P2SA2M34LFS

KT11P2SA2M34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

1568

KMR432G LFS

KMR432G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

239

PTS636 SK43J SMTR LFS

PTS636 SK43J SMTR LFS

C&K

TACT 6.0 X 3.5, 4.3 MM H, 250GF,

6091

KSR213GLFG

KSR213GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

8167

KSC201GLFS

KSC201GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

30352

PTS645TH43 LFS

PTS645TH43 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KT11P2SA2M35LFG

KT11P2SA2M35LFG

C&K

SWITCH TACTILE SPST-NO 1VA 32V

4890

KMS223GPLFG

KMS223GPLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 50V

0

KSA0M412LFT

KSA0M412LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

9659

PTS645SL50SMTR92 LFS

PTS645SL50SMTR92 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

17695

KMR731NG LFS

KMR731NG LFS

C&K

SWITCH TACTILE SPST-NO 50MA 32V

0

KSC201JLFS

KSC201JLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

49482

PTS647SN38SMTR2LFS

PTS647SN38SMTR2LFS

C&K

TACT 4.5 X 4.5, 3.8 MM H, 1.0N,

78237

PTS 647 SK70 SMTR2 LFS

PTS 647 SK70 SMTR2 LFS

C&K

TACT 4.5 X 4.5, 7.0 MM H, 2.5N,

80622

KSA0V331 LFTR

KSA0V331 LFTR

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

6533

KMR431G LFS

KMR431G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

43975

PTS636 SK25 SMTR LFS

PTS636 SK25 SMTR LFS

C&K

TACT 6.0 X 3.5, 2.5 MM H, 250GF,

11967

KSC441G ST2 LFS

KSC441G ST2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KMR211NG LFS

KMR211NG LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

20525

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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