Tactile Switches

Image Part Number Description / PDF Quantity Rfq
KSC421G 70SH LFS

KSC421G 70SH LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

ILS TC180 10

ILS TC180 10

C&K

TOP ACTUATED ILLUMINATED TACT,18

969

KSC741G LFS

KSC741G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

1370

PTS645SM95SMTR92LFS

PTS645SM95SMTR92LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

0

TLS A 070 T3J LFS

TLS A 070 T3J LFS

C&K

SWITCH TACT 7N J LEADS SMT SOFT

17004

PTS645VM13SMTR92LFS

PTS645VM13SMTR92LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

417

PTS841 GM SMTR LFS

PTS841 GM SMTR LFS

C&K

TACT 3.6 X 3.5, 1.25 MM H, 180GF

2004

KT11B1SAM35LFG

KT11B1SAM35LFG

C&K

SWITCH TACTILE SPST-NO 1VA 32V

10068

KSC341GLFS

KSC341GLFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

2126

KSC SLT 241G LFS

KSC SLT 241G LFS

C&K

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

0

KST243JLFG

KST243JLFG

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

956

PTS636 SK50 SMTR LFS

PTS636 SK50 SMTR LFS

C&K

TACT 6.0 X 3.5, 5.0 MM H, 250GF,

11647

ITS40FV2SR

ITS40FV2SR

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

207

KSJ0V211 60SH LFTR

KSJ0V211 60SH LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

ITS40FR1ST

ITS40FR1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

676

PTS840 PM SMTR LFS

PTS840 PM SMTR LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

2628

EDSSC0LFS

EDSSC0LFS

C&K

SWITCH TACTILE SPST-NO 0.1A 100V

400

NANOT 240 BP

NANOT 240 BP

C&K

SWITCH TACT PIP

7481

KMR231NG ULC LFS

KMR231NG ULC LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KSC741J LFS

KSC741J LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

44

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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