Tactile Switches

Image Part Number Description / PDF Quantity Rfq
PTS645TM43-2 LFS

PTS645TM43-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

9871

KMR221NG LFS

KMR221NG LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

PTS841 ESD GMP SMTR LFS

PTS841 ESD GMP SMTR LFS

C&K

TACT 3.6 X 3.5, 1.25 MM H, 180GF

1617

PTS645VM31-2 LFS

PTS645VM31-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

1568

PTS810 SJM 250 SMTR LFS

PTS810 SJM 250 SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 16V

14653

PTS645TL50-2 LFS

PTS645TL50-2 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

449

KSC SLT 243J LFG

KSC SLT 243J LFG

C&K

TACT 6.2 X 6.2, 5.0 MM H, 3.5N,

957

PTS636 SL43 LFS

PTS636 SL43 LFS

C&K

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

4362

KMR231G ULC LFS

KMR231G ULC LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

3605

ITS50FV1ST

ITS50FV1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

794

KSJ0V411 80SH LFTR

KSJ0V411 80SH LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

8346

KSL1M211 LFTR

KSL1M211 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

8470

PTS645SK13SMTR92LFS

PTS645SK13SMTR92LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

PTS636 SM43 LFS

PTS636 SM43 LFS

C&K

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

3376

KMT211NG HF LFS

KMT211NG HF LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

3741

PTS820 J25MP SMTR LFS

PTS820 J25MP SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

PTS636 SM25F SMTR LFS

PTS636 SM25F SMTR LFS

C&K

TACT 6.0 X 3.5, 2.5 MM H, 180GF,

4356

KSC241JLFS

KSC241JLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

562

KSC XA 68 J LFS

KSC XA 68 J LFS

C&K

TACT 6.2 X 6.2, 4.9 MM H, 6.8N,

674

KSL0M512LFT

KSL0M512LFT

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

8478

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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