Tactile Switch 4.5×4.5mm Side Three-Pin

Tactile switch with 4.5x4.5mm compact footprint and side-actuated three-pin configuration, designed for edge-mount PCB applications. Ideal for consumer electronics, handheld devices, and space-constrained enclosures requiring reliable right-angle switching performance with robust mechanical grounding.

Product Overview

This tactile switch features a compact 4.5x4.5mm body size and a right-angle side-actuation design with a three-pin terminal layout. Designed for edge mounting on printed circuit boards, the integrated third pin acts as a mechanical anchor and grounding support to absorb horizontal pressing force, preventing pad lifting and joint fatigue. Built with a high-precision metal dome mechanism, it delivers crisp acoustic feedback, low contact resistance, and exceptional durability across wide operating temperatures.

Key Specifications

• Product Type: Tactile Switch

• Size: 4.5 × 4.5mm

• Actuation Direction: Side-Operated / Right-Angle

• Terminal Layout: 3-Pin (2 Circuit Terminals + 1 Support/Ground Pin)

• Mounting Type: SMD (Surface Mount) / DIP (Through-Hole) (optional)

• Operation Type: Momentary (Off-Mom)

• Contact Material: Stainless Steel Dome / Copper Alloy Terminals

• Contact Plating: Silver Plated / Gold Plated (optional)

• Insulator Material: High-Temperature Thermoplastic (UL 94V-0, LCP/PA6T)

• Rated Current: 50mA

• Rated Voltage: 12V DC

• Contact Resistance: ≤ 100mΩ (initial)

• Insulation Resistance: ≥ 100MΩ (at 100V / 250V DC)

• Dielectric Strength: 250V AC for 1 minute

• Operating Force: 160 ± 50 gf / 250 ± 50 gf (optional)

• Travel Distance: 0.25 ± 0.1mm

• Operating Temperature: -20°C to +70°C (Extended -40°C to +85°C optional)

• Durability: 100,000 Cycles (standard) / 300,000 Cycles (optional)

• Packaging: Tape & Reel / Bag (optional)

Features

• 4.5x4.5mm compact footprint for high-density, space-saving board layouts

• Right-angle side-actuation specifically engineered for edge-mounted user controls

• Three-pin structural design provides superior shear-stress resistance and PCB retention

• Sharp, audible tactile click ensuring positive user confirmation

• Reflow and wave-solder compatible high-temperature housing

• RoHS and REACH compliant

Applications

• Consumer electronics (audio players, digital cameras, smart wearables)

• Handheld devices and portable diagnostic equipment

• Smart home interfaces and IoT edge modules

• Computer peripherals, gaming controllers, and mouse side buttons

• Telecom hardware, routers, and reset switches

• Industrial control modules and power/function switches

Customization Options

• Stem height / total length customization (e.g., 3.8mm, 4.3mm, 5.0mm, 7.0mm)

• Operating force options (160gf / 250gf / customized)

• Contact plating options (Silver / Gold)

• Terminal style selection (SMT with positioning peg / Through-hole DIP)

• High-durability cycle life extensions (up to 300,000–500,000 cycles)

• Tape & Reel automated SMT packaging or bulk packaging

• OEM / ODM support