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Green PCB microSD breakout board with push-push socket, activity LED, and loose .1in header pins

Adafruit

Adafruit MicroSD Card Breakout Board+ 150mA LED .1in header

SKU CH-SY2Q-R2TDV

MicroSD breakout board with onboard 5V to 3V regulator, level shifting, activity LED, and .1in header for breadboard use

  • Card typeMicroSD
  • Assembled and tested for immediate use
  • Onboard regulator supplies 150mA for power-hungry cards
  • Proper level shifting chip enables faster read and write access
  • Activity LED shows when card is being read or written
  • Push-push socket with .1in header for easy breadboard mounting

Adafruit MicroSD Breakout Board+ 150mA LED

This assembled and tested breakout board provides a MicroSD card socket with a built-in 5 V to 3 V regulator supplying 150 mA for power-hungry cards. A dedicated level-shifting chip enables reliable operation on both 3 V and 5 V logic systems. An onboard LED indicates read and write activity. A .1 in header is included unattached for breadboard or wired connections.

Makers adding removable storage to 3 V

The board suits hobbyists and developers who need a ready-to-use MicroSD interface with proper level shifting and visual activity feedback. It works with Arduino using pins 10 through 13 and the standard SD library for FAT and FAT32 cards. Builders requiring a bare connector without regulation, level shifting or an activity LED should look at simpler adapter boards.

Push-push socket with card overhang for easy removal

The MicroSD socket places the card slightly over the PCB edge so it can be inserted and ejected without tools. This mechanical detail decides whether the board fits your enclosure or mounting plan.

Highlights

  • Assembled and tested for immediate use
  • Onboard regulator supplies 150mA for power-hungry cards
  • Proper level shifting chip enables faster read and write access
  • Activity LED shows when card is being read or written
  • Push-push socket with .1in header for easy breadboard mounting

Specifications

Card typeMicroSD

Questions about this item

Does the onboard regulator stay cool while supplying the full 150mA to a power-hungry card all day?

The 5V-to-3V regulator is rated for 150mA continuous output, and the board uses a proper level-shifting chip rather than resistors, so heat remains low during sustained read and write cycles.

What pins and voltage rail must my microcontroller already provide to use this breakout?

You need a 5V supply, ground, and four digital pins — for example CLK on 13, DO on 12, DI on 11 and CS on 10 — which the Arduino SD library expects.

Will the 3V level shifting work reliably with a classic 5V Arduino Uno I already own?

Yes, the built-in level-shifting chip translates signals cleanly between 5V and 3V logic, so the board works directly with 5V Arduinos as well as 3V systems.

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