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SanDisk Ultra 256GB microSDXC card red and grey finish

SanDisk

SanDisk 256GB Ultra A1 microSDXC UHS-I Class 10 memory card

SKU CH-MDYJ-CH0TA

256GB microSDXC card with UHS-I Class 10 read speeds up to 100MB/s and A1 rating for faster app loading on Android devices

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classClass 10
  • Max read speedup to 100 MB/s
  • Product typeMicroSDXC

Card type MicroSD

Capacity 256GB

Series Ultra (98MB/s +)

  • Load apps faster with A1-rated performance for smoother smartphone use
  • Transfer files quickly at up to 100 MB/s read speed
  • Store large media libraries with 256 GB capacity
  • Record Full HD video reliably with Class 10 speed rating
  • Move up to 1200 photos in a minute with fast transfer speeds

Capacity and use case

The SanDisk Ultra microSDXC card provides 256 GB of storage for Android smartphones and tablets. It records Full HD video and stores large photo libraries without running out of space. The A1 rating helps apps launch faster on mobile devices.

Speed class and transfer benefit

Class 10 and UHS-I ratings guarantee a minimum sequential write speed for smooth Full HD capture. Read speeds reach up to 100 MB/s, letting you offload up to 1200 photos in a minute. Faster transfers reduce waiting time when moving files to a computer.

Installation notes

Insert the card into the device's microSD slot until it clicks; most phones and tablets recognise it instantly. If the device formats the card as internal storage, it cannot be read elsewhere without reformatting. Handle the small form factor carefully to avoid bending the contacts.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $61.99
Pricier than about 58% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $242.15 per TB
Cheaper than about 72% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineUltra
Model nameSDSQUAR-256G
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classClass 10
Max read speedup to 100 MB/s
Storage
Memory card formatMicroSD

Other versions of this model

5 more in the same range

Questions about this item

How many write cycles can the 256 GB Ultra A1 microSDXC card sustain before cells wear out?

SanDisk does not publish a TBW or cycle rating for this Ultra A1 card, so a precise endurance figure is not available.

What is the minimum sustained write speed the Class 10 rating guarantees during long recordings?

Class 10 certifies a minimum sequential write speed of 10 MB/s, which is the floor for continuous Full HD capture.

Does the card run hot or draw extra power when transferring at the 100 MB/s read peak all day?

The microSDXC UHS-I interface limits bus power to a few hundred milliwatts, so the card stays cool and draws minimal current even at peak read throughput.

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