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Tactile Switch 3X4X2.5mm 4 Pins SMD

SKU: UDS5C3QHCW
★★★★ ★ ★
4.3 (148 reviews)
The 3×4×2.5mm 4-Pin SMD Tactile Switch is a compact and reliable momentary push-button switch designed for modern electronic devices with limited PCB space. Featuring a small footprint and low-profile design, this switch provides responsive tactile feedback while ensuring dependable operation in a wide range of applications. Operating in a normally open (NO) configuration, the switch completes the circuit only when...
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The 3×4×2.5mm 4-Pin SMD Tactile Switch is a compact and reliable momentary push-button switch designed for modern electronic devices with limited PCB space. Featuring a small footprint and low-profile design, this switch provides responsive tactile feedback while ensuring dependable operation in a wide range of applications.

Operating in a normally open (NO) configuration, the switch completes the circuit only when pressed and returns to its open state when released. Its 4-pin surface-mount design offers excellent PCB stability and compatibility with automated SMT assembly processes, making it ideal for consumer electronics, IoT devices, remote controls, wearable technology, and embedded systems.

Key Features

  • Compact 3×4mm footprint with 2.5mm low-profile height
  • 4-pin SMD design for enhanced PCB stability
  • Momentary ON (Normally Open) operation
  • Crisp tactile feedback for reliable user input
  • Suitable for automated SMT assembly processes
  • Ideal for compact and high-density PCB layouts
  • Durable construction with long operational life
  • Compatible with consumer electronics, IoT, and embedded applications

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Switch Type: Tactile Switch (Momentary)
Operation Mode: Normally Open (NO)
Dimensions: 3mm × 4mm × 2.5mm
Mounting Type: Surface Mount Device (SMD)
Number of Pins: 4
Operating Voltage: 12V DC (typical)
Operating Current: 50mA max
Contact Resistance: ≤ 100 mΩ
Insulation Resistance: ≥ 100 MΩ
Actuation Force: 160gf – 260gf (typical)
Travel Distance: Approximately 0.15mm – 0.25mm
Mechanical Life: Up to 100,000 cycles
Operating Temperature: -20°C to +70°C
Contact Material: Metal alloy
Housing Material: High-temperature thermoplastic
Color: Silver/Black (varies by manufacturer)

Additional Resources

Tactile Switch.PDF

FAQ

1. What is a 3×4×2.5mm 4-Pin SMD Tactile Switch used for?

It is used as a momentary input switch in compact electronic devices such as remote controls, IoT modules, wearable electronics, consumer gadgets, and embedded systems.

2. How does the 3×4×2.5mm tactile switch operate?

It operates on a normally open (NO) mechanism, completing the circuit only when the button is pressed and returning to the open state when released.

3. Why does this switch have 4 pins?

The 4-pin design provides improved mechanical stability on the PCB and ensures reliable electrical connections during operation.

4. Is this switch suitable for automated SMT assembly?

Yes, its surface-mount (SMD) design is fully compatible with automated pick-and-place and reflow soldering processes used in modern electronics manufacturing.

5. Can this switch be used in Arduino and custom PCB projects?

Yes, it is commonly used in custom PCB designs for Arduino, ESP32, STM32, and other microcontroller-based projects where a compact tactile input switch is required.

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