Tactile Switches

Image Part Number Description / PDF Quantity Rfq
PTS 647 SN70 SMTR2 LFS

PTS 647 SN70 SMTR2 LFS

C&K

TACT 4.5 X 4.5, 7.0 MM H, 1.0N,

74456

KSR223GNCLFG

KSR223GNCLFG

C&K

SWITCH TACTILE SPST-NC 0.01A 32V

0

KT11B0SM34LFS

KT11B0SM34LFS

C&K

SWITCH TACTILE SPST-NO 1VA 32V

2514

KSC931J LFS

KSC931J LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

53104

PTS636 SKG25J SMTR LFS

PTS636 SKG25J SMTR LFS

C&K

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

4173

KSA0M511 LFTR

KSA0M511 LFTR

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

2596

PTS635SL43 LFS

PTS635SL43 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

5984

PTS526 SKG15 SMTR2 LFS

PTS526 SKG15 SMTR2 LFS

C&K

TACT 5.2 X 5.2, 1.5 MM H, 260GF,

13876

ITS40FV3SR

ITS40FV3SR

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

527

PTS815 SJK 250 SMTR LFS

PTS815 SJK 250 SMTR LFS

C&K

TACT 4.2 X 3.2, 2.5 MM H, 250GF,

6838

ITS40FR2ST

ITS40FR2ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

597

KXT 311 LHS

KXT 311 LHS

C&K

SWITCH TACTILE SPST-NO 0.02A 15V

3760

KSC521G ROHS

KSC521G ROHS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

0

KT11B1JM35LFG

KT11B1JM35LFG

C&K

SWITCH TACTILE SPST-NO 1VA 32V

496

KSA0M332LFT

KSA0M332LFT

C&K

SWITCH TACTILE SPST-NO 0.01A 32V

1256

ILS TC250 10

ILS TC250 10

C&K

TOP ACTUATED ILLUMINATED TACT,25

1000

PTS636 SM50 LFS

PTS636 SM50 LFS

C&K

TACT 6.0 X 3.5, 5.0 MM H, 180GF,

2858

ITS23FR1ST

ITS23FR1ST

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

358

KSR252G LFS

KSR252G LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 32V

228

PTS645SM50SMTR92 LFS

PTS645SM50SMTR92 LFS

C&K

SWITCH TACTILE SPST-NO 0.05A 12V

12875

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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