The first microSD for temperatures -40 to 85˚C is the Apacer BiCS5


The 112-layer BiCS5 NAND flash memory from Kioxia is the foundation of Apacer’s new CH120-MSD series. A new series is increasingly taking the place of the well-liked 64-layer CH110-MSD series. (three minutes of reading)

MIROSLAV PISKOR SOS electronic Product Specialist More articles from the author.

The most recent details on Apacer microSD memory cards for industry, based on BiCS 3D NAND FLASH technology, as well as a brief summary of its dynamic development through time, were prepared by M. Piskor, product specialist from SOS electronic.

CH120-MSD series

The first BiCS5 memory-based solution for the 40 to 85 °C temperature range was introduced by Apacer in March 2022.

For about the same price as the CH110-MSD series, the CH120-MSD series delivers the similar features: SDHC (SDXC), C10, UHS-I U3, V30, SPI Mode, and SMART. It satisfies the criteria of the A1 performance class (500 IOPS write, 1500 IOPS read, and sustained write 10MB/s), despite not being mentioned in the datasheet.

Table below summarizes performance and other parameters (pdf).

An overview of BiCS 3D NAND FLASH history

The acronym BiCS, which stands for “bit column stacked,” denotes 3D NAND technology. BiCS’s first design was never put into mass production. The 48-layer second-generation chips were utilized in memory cards and cellphones and had a small foothold in the SSD industry.

What 3D NAND Flash memory has the best market share?

In the first quarter of 2022, 85% of 3D NAND flash memories with more than 92 layers and only 12% with 64 or 72 layers were produced, and the transition to 112 or more layers is about to continue, according to DRAMeXchange figures.

If you have any questions concerning Apacer products, feel free to contact the SOS electronic sales representative in your area or send them an email at [email protected]


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