Tactile Switches

Image Part Number Description / PDF Quantity Rfq
K8BU41GLFS

K8BU41GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC441J ST1 LFS

KSC441J ST1 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

12057

KSEK43GLFS

KSEK43GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

431

KSL0M211LFT

KSL0M211LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

3

RS-197N05A1-DS RT

RS-197N05A1-DS RT

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

K5V1GN43T

K5V1GN43T

C&K

SWITCH TACTILE SPDT 0.1A 32V

4919

KSJ0M21180SH LFTR

KSJ0M21180SH LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC421J 70SH LFS

KSC421J 70SH LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

1851

PTS841 ESD GKP SMTR LFS

PTS841 ESD GKP SMTR LFS

C&K

TACT 3.6 X 3.5, 1.25 MM H, 250GF

2502

KSC351JLFS

KSC351JLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KMT022NGJLHS

KMT022NGJLHS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS636 SL43 SMTR LFS

PTS636 SL43 SMTR LFS

C&K

TACT 6.0 X 3.5, 4.3 MM H, 130GF,

4913

PTS841 ESD GK SMTR LFS

PTS841 ESD GK SMTR LFS

C&K

TACT 3.6 X 3.5, 1.25 MM H, 250GF

2899

KSC241GLFS

KSC241GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

1487

PTS840 ESD GK SMTR LFS

PTS840 ESD GK SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

KMS223GLFG

KMS223GLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 50V

1919

ITS50FR2ST

ITS50FR2ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

28

EDGAC1LFS

EDGAC1LFS

C&K

SWITCH TACT SPST-NO 0.05A 100V

1427

KSC411J 70SH LFS

KSC411J 70SH LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

2757

KSS321GLFS

KSS321GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 50V

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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