2x3x0.6mm Ultra-Thin SMD Tactile Membrane Switch Push Button

Specifications

• Switch Type: Tactile Push Button Switch
  
• Mounting Type: Surface Mount Device (SMD / SMT)
  
• Actuation Direction: Top-Actuated (Membrane Button)
  
• Circuit / Contact Form: Single Pole Single Throw - Normally Open (SPST-NO)
  
• Dimensions (L × W × H): 3.0mm × 2.0mm × 0.6mm [Estimated]
  
• Contact Rating: 50mA @ 12V DC Max
  
• Contact Resistance: 100mΩ Max
  
• Insulation Resistance: 100MΩ Min @ 100V DC
  
• Dielectric Withstanding Voltage: 250V AC for 1 minute
  
• Operating Force: 160gf ± 50gf
  
• Travel / Stroke: 0.15mm ± 0.05mm
  
• Operating Life: 50,000 to 100,000 cycles
  
• Terminal Pitch / Configuration: 2-Pin SMD Solder Pads
  
• Operating Temperature: -20°C to +70°C
  
• Sealing / Protection: Top Membrane Film Sealed (Dust & Flux Resistant)
  
• Compatible Platforms: Wearables, Smart Cards, Hearing Aids, Compact IoT Hardware

Project Evolution

Unlock New Capabilities

• Past Projects (Prerequisites)
  If you've already experimented with standard 6x6mm through-hole tactile buttons or larger 4x4mm SMD switches on prototyping boards, you understand basic digital input sensing, pull-up resistors, and switch debounce routines. Transitioning to this ultra-thin 2x3x0.6mm SMD tactile membrane switch is the next step for moving beyond bulky development boards into sleek, ultra-miniature hardware designs where every tenth of a millimeter counts.
• Feature Upgrade (What This Unlocks)
  This 2x3x0.6mm tactile switch unlocks ultra-low-profile top actuation inside razor-thin enclosures. Featuring an overall height of just 0.6mm, integrated sealed membrane dome, and compact surface-mount solder leads, it enables push-button interfaces in smart cards, ultra-thin wearable bands, miniature Bluetooth earbud cases, and hearing aid remotes where standard tactile buttons simply cannot fit.

Effort Level & Minimum Hardware

Effort Level: Intermediate / Advanced

Minimum hardware to get started:

• Custom PCB with Precision SMD Solder Pads — required because the microscopic 2.0×3.0mm footprint and 0.6mm height cannot be plugged into standard 2.54mm pitch breadboards or perfboards.
  
• Fine-Tip Temperature-Controlled Soldering Station or Reflow Hot Air Station — required to solder the microscopic terminal leads cleanly without overheating and melting the delicate top membrane seal.
  
• Microcontroller Development Board (Arduino Uno, ESP32, or RP2040) — required to supply the digital logic voltage and detect button state transitions in your firmware.

Virtual Technician & Pinout Guide

⚠️ Safety Warnings:

• Soldering Thermal Limits: Do not exceed 260°C for more than 5 seconds during hand soldering or reflow; excessive heat will melt the ultra-thin yellow polyimide membrane seal and ruin the internal metal dome contact.
  
• Membrane Seal Protection: Never puncture, scratch, or peel the top yellow protective membrane film; this seal keeps flux, moisture, and dust out of the micro-contact cavity.
  
• Floating Input Prevention: Always configure the microcontroller GPIO pin with an internal pull-up resistor (or place an external 10kΩ pull-up resistor); a floating input will pick up electrical noise and trigger false presses.

Package Includes: 

1× 2x3x0.6mm Ultra-Thin SMD Tactile Membrane Switch Push Button

Frequently Asked Questions

1. Can this 2x3x0.6mm ultra-thin tactile switch be used directly on a solderless breadboard?
   No, it features sub-miniature edge solder pads designed exclusively for surface-mount printed circuit boards; it requires a custom PCB or a dedicated SMD-to-DIP breakout adapter board.
2. Is this momentary tactile switch compatible with 3.3V and 5V microcontrollers like Arduino and ESP32?
   Yes, it functions as a passive dry-contact SPST momentary switch that interfaces seamlessly with 1.8V, 3.3V, and 5V logic inputs using internal microcontroller pull-up resistors.
3. Can this switch fit inside ultra-thin wearables, hearing aids, and smart card devices?
   Yes, with an ultra-low profile of only 0.6mm and a compact 2×3mm footprint, it is specifically engineered for extremely constrained enclosures where standard push buttons cannot fit.
4. What is the maximum operating voltage and current rating for this tactile switch?
   The switch is rated for a maximum of 12V DC at 50mA, making it suitable for low-power digital signals, logic level sensing, and microcontroller GPIO inputs.
5. Can I use this micro tactile switch to directly switch high-current DC loads or motors?
   No, attempting to switch inductive loads or currents exceeding 50mA will burn or pit the internal membrane contact; use the switch to trigger a MOSFET, transistor, or relay instead.
6. How do I connect this 2-pin tactile switch to an Arduino or ESP32 GPIO pin? Connect one terminal pad to a digital GPIO pin configured with INPUT_PULLUP in software, and connect the second terminal pad directly to circuit ground (GND).
7. Does this tactile membrane switch have polarity requirements during soldering?
   No, as a standard SPST-NO dry-contact momentary mechanical switch, either terminal can be connected to the GPIO line or ground interchangeably.
8. Do I need any dedicated third-party library to read this switch in Arduino IDE?
   No, you can read it directly using digitalRead(), though using software debounce routines or libraries like Bounce2 is recommended to eliminate contact chatter.
9. What debounce delay should I set in firmware for this membrane tactile switch?
   A standard software debounce delay of 10ms to 20ms in your microcontroller loop reliably filters mechanical bounce upon pressing and releasing.
10. Why is my microcontroller registering random ghost button clicks when nobody touches the switch?
    This occurs if the GPIO pin is left floating without a defined logic level; ensure the microcontroller's internal pull-up resistor is enabled in code or wire an external 10kΩ pull-up resistor.
11. Why did the switch lose its tactile snap feedback after hand soldering? Excessive soldering heat above 260°C or iron contact lasting longer than 5 seconds melts the internal plastic cavity and damages the dome; always use quick, light soldering iron contact.
12. Why does the switch feel mushy or fail to register presses reliably?
    This typically occurs if liquid flux, solvent, or cleaning chemicals seeped underneath the protective yellow membrane; never puncture or peel the top film seal.
13. Are these sub-miniature membrane switches quality tested and batch inspected at Probots?
    Yes, every batch undergoes visual QC inspection at Probots in Bangalore to verify terminal coplanarity, intact yellow polyimide membrane seals, and crisp tactile response.
14. Can OEMs and electronics manufacturing facilities order these switches in tape-and-reel quantities?
    Yes, Probots supports bulk supply and fast dispatch across India for IoT hardware startups, medical device developers, and manufacturing OEMs.
15. Does Probots stock SMD soldering tools, fine tweezers, and soldering flux for assembling this switch?
    Yes, we carry no-clean SMD flux pens, precision ESD tweezers, fine 0.3mm solder wire, and temperature-controlled rework stations in our Bangalore warehouse.