A Smart Media card is a flash memory card commonly used in portable devices such as digital cameras and mobile phones. Developed by Toshiba in 1995, it is less than one millimeter thick and has a capacity of 2 MB to 128 MB. It is designed to store data up to 10 years even when unpowered, and has approximately one million read/write cycles using 16 to 64 Mbit flash memory chips.
This type of Smart Media card is identical in form to the 3.3V format, except that it does not have a notched corner. It is commonly used in older Smart Media devices.
3.3V format
Sometimes marked 3V, this type of Smart Media card is used in newer Smart Media devices. It has a notched corner as a mechanical provision to prevent it from being damaged by devices that use 5V Smart Media cards only.
