SDXC420T - microSDHC

In stock
SDXC420T - microSDHC
Brand: Transcend

Utilizing top-quality 3D NAND Flash and rated to endure 3K P/E cycles, the memory cards combine the advantages of high performance and exceptional endurance, ideal for write-intensive applications such as medical devices, surveillance systems, and POS terminals.

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Compliant with UHS-I

Compliant with SD specification 5.1

Compliant with UHS-I Speed Class 10

Compliant with Application Performance Class 1 (A1)

Compliant with RoHS 2.0 standards

Endurance: 3K P/E cycles (Program/Erase cycles) guaranteed

Built-in ECC (Error Correction Code) functionality

This product is listed in Digital Signage, Industrial Automation, Gaming, Mining, Medical, Transport, Transcend


Dimensions 11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04")
Form Factor
  • microSD flash card


Flash Type
  • 3D NAND flash
  • 16 GB/
  • 32 GB/
  • 64 GB/
  • 128 GB/
  • 256 GB

Operating Environment

Operating Voltage
  • 2.7V ~ 3.6V
Drop Test
  • 1.5m free fall
Operating Temperature
  • Standard
    -25°C (-13°F) ~ 85°C (185°F)
Storage Temperature -40°C (-40°F) ~ 85°C (185°F)
Humidity 0% ~ 95%
  • Acceleration: 490 m/s² (standard holding time: 11 ms, semi-sine wave, velocity change: 3.44 m/s)
Vibration (Operating) 20 G (peak-to-peak), 20 Hz ~ 2,000 Hz (frequency)


Power Consumption (Max.) 0.5 watt(s)


Read Speed (Max.) 95 MB/s
Write Speed (Max.) 40 MB/s
Terabytes Written (Max.) 640 TBW
  • Speed may vary due to host hardware, software, usage, and storage capacity.


  • CE/
  • FCC
  • Three-year Limited Warranty
Warranty Policy
  • Please check for more information about the Transcend Warranty Policy.
  • Due to the complexity and variety of industrial applications, Transcend cannot guarantee 100% compatibility with all platforms and under all scenarios. For special applications and environments, it is strongly suggested that you contact Transcend beforehand for clarification.