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Low-Profile SMT Tact Button 4.5 For Wearable Devices

Model No.HX TS3645ZJ

In stock, shipped directly

Advantages:

  • Size: Approx. 6.0 × 3.5 mm (L × W); height options 1.7–2.5 mm
  • Circuit: SPST momentary (normally open), short travel
  • Travel/feel: 0.25–0.35 mm travel; operating force 160/220/300 gf options
  • Electrical rating: 12 VDC, 50 mA
  • Contact resistance: ≤100 mΩ (initial)
  • Insulation resistance: ≥100 MΩ at 100 VDC

Product Specification
Product Description
Application Field
Why Choose Us

Product Description

The Low-Profile SMT Tact Button 4.5 is designed for compact electronic applications where space optimization and precise tactile feedback are essential. With an ultra-thin structure and a 4.5mm size format, this surface-mount tactile switch is ideal for modern wearable devices that require lightweight and low-profile components.

Engineered for SMT (Surface Mount Technology) assembly, the switch supports automated high-speed production lines, improving manufacturing efficiency and placement accuracy. Its compact footprint allows integration into smartwatches, fitness trackers, medical wearables, and portable consumer electronics without increasing overall device thickness.

The tactile mechanism provides clear, responsive feedback with consistent actuation force, ensuring accurate user input in small-form-factor devices. High-quality stainless steel dome contacts enhance durability and maintain stable electrical performance over extended usage cycles. The sealed structure helps reduce dust intrusion, supporting reliable operation in daily wearable environments.

Key Features:

  • Ultra-low profile 4.5mm compact design

  • SMT compatible for automated assembly

  • Crisp and consistent tactile feedback

  • Long electrical and mechanical lifespan

  • Suitable for compact wearable electronics

With optimized contact design and precise structural tolerance control, the Low-Profile SMT Tact Button 4.5 delivers dependable signal transmission and long mechanical life. It supports multiple actuation force options to match different product design requirements, allowing manufacturers to fine-tune user experience.

Application Field

The Low-Profile SMT Tact Button 4.5 is designed for compact electronic devices that require precise tactile response and minimal installation height. It is widely used in the following application fields:

Wearable Devices

Applied in smartwatches, fitness trackers, health monitoring bands, and other body-worn electronics where ultra-thin components and reliable input control are essential.

Medical Portable Equipment

Integrated into portable diagnostic tools, patient monitoring devices, and handheld medical instruments that require stable and accurate switching performance.

Consumer Electronics

Used in wireless earbuds, Bluetooth controllers, mini remote controls, and compact smart accessories requiring space-saving SMT components.

IoT & Smart Devices

Suitable for smart home controllers, compact sensors, and connected modules where lightweight and low-profile design is critical.

Industrial Miniature Control Modules

Installed in small industrial control boards, handheld terminals, and embedded systems demanding durable SMT tactile input solutions.

Its low-profile structure, reliable contact performance, and SMT compatibility make it ideal for high-density PCB layouts and modern compact electronic designs.

Why Choose Us

Precision Manufacturing & Stable Quality

We implement strict quality control throughout production. Each Low-Profile SMT Tact Button 4.5 undergoes electrical testing and life-cycle verification to ensure consistent performance in compact wearable devices.

Ultra-Thin Design Expertise

Our engineering team specializes in low-profile switch structures. We optimize height tolerance, actuation force consistency, and contact stability to meet demanding wearable product requirements.

Reliable SMT Production Compatibility

The switch is designed for high-speed automated SMT assembly. Accurate dimensions and stable solderability improve placement efficiency and reduce production defects.

Flexible Customization Support

We provide multiple actuation force options, height variations, and packaging solutions. Custom specifications are available to match different PCB layouts and device designs.

Strong Supply Capacity & Technical Support

With stable production capability and fast response service, we support OEM and bulk orders. Our technical team offers application guidance and quick assistance for project development.

Choosing us means dependable quality, compact design expertise, and long-term cooperation for advanced wearable device components.