Micro SD

A micro SD is basically a memory card. This removable flash card is used in electronic equipment like mobile phones, cameras, portable media players, etc. Numerous SD cards are available of different companies like Samsung, SanDisk, transcend, etc. The storage capacity varies from two gigabytes to thirty two gigabytes. The sizes of SD cards generally vary according to their use. For example, the smallest available micro SD card is used in a mobile phone. The dimensions of this mobile phone SD card are about a quarter of the standard sizes of SD cards. One advantage of micro SD cards is that they can be used with devices supporting mini-SD, memory stick duo, USB and SD cards. All one needs is an adapter, but it is not compatible universally. The SD memory card can also be used with devices meant for the TransFlash memory card. Both the SD mobile memory card and the TransFlash are essentially the same. The format of the mobile SD was developed by SanDisk and was initially known as the T-flash which later became TransFlash. Eventually when it was taken over by the SD card Association it was renamed as the micro SD.  Both of them are almost the same but the micro SD card supports SDIO mode which enables or allows non-memory cards such as GPS, Bluetooth, etc. to work.  In today’s generation, the micro SD card is becoming increasingly popular as it occupies the least space and is an effective way of storing data in mobiles, cameras, mp4 players, etc.

The card’s speed is measured by its data transfer rate. Data transfer rate means how fast data can be written to or copied from the memory card. This transfer rate or speed is an important factor. If the speed is below a certain limit then the device will not perform up to the marks in applications like video recording where a sustained write throughput is required. Previously the speed of the SD cards were calculated by “x” rating of the original CD-ROM drive. Nowadays the transfer rate is measured by Speed Class Rating.

The Speed Class Rating gives the minimum speed at which data can be written to or read from the card. The newer generation of SD cards has improved speeds with increased bus rate. Whatever maybe the bus rate, the card can indicate that it is busy in some read or write function until it is complete. The different speed classes of today’s micro SD cards are 2 MB/s, 4 MB/s, 6 MB/s and 10 MB/s. Generally the lower speed classes are sufficient for MPEG-2 and MPEG-4 recording while for a full HD video recording higher speed classes are required. In today’s world the micro SD card finds a wide range of application due to its minimum space requirement and light weight. Almost all electronic gadgets are now using micro SD which has proved to be an effective way of storing and transferring data. Micro SD cards are the ultimate product in memory storage.

MicroSD cards FAQ – Frequently asked questions

What is a microSD?
MicroSD is axactly the same memory card as TransFlash. MicroSD is completely compatible with and has the same dimensions as TransFlash memory card. MicroSD has been introduced by the SD Card Association as their new form factor memory card. MicroSD is the world’s smallest memory card and is designed specifically for the new generation mobile phones, which will need large storage capacities for multimedia applications, such as digital music, digital photo, video, videogames, organizers, MMS and email.

Where and how do I use my microSD?
You will be able to use a microSD memory card in any mobile phone having a microSD or TransFlash slot. When the micro SD memory card is inserted into a SD adapter, which is included when purchasing a microSD, it converts into a regular Secure Digital memory card. Then it can be used and exchange data with any device compatible with the Secure Digital standard.

Who introduced the microSD memory card?

MicroSD, formerly known as TransFlash or T-Flash, was introduced by SD Card Association in the mid of 2005. TransFlash was introduced by SanDisk in 2004.

How fast is my microSD memory card?
The microSD is having the same performance regarding transfer speed as the miniSD memory card. The normal transfer speed is 12x or 1.8 MB/sec. High read and write speed enables data to be stored and read more quickly.

How much data can my microSD hold?
MicroSD is currently available from 32 MB to 128 GB storage capacity. SanDisk expects to introduce a 1 TB microSD card by the end of the year and a 2TB microSD in 2013. For your reference a 128 MB TransFlash memory card can store 30 MP3 songs or 148 digital photos taken with a 2 megapixel camera, and 16GB card suits professional photographer needs: more than 500 photos in high quality RAW format without compression.

The dimensions of microSD memory card?
As mentioned in the beginning microSD is the smallest memory card in the market. It is also the smallest card in the Secure Digital family after the SD memory card and miniSD. The dimensions are: 11mm x 15mm x 1mm, which is approximately the size of a thumbnail.

The future of microSD:
SD Card Association strategy is to make microSD a “De Facto” standard for mobile phones.

What about the price of microSD memory card?
The microSD is more expensive than regular SD memory card. Still it is one of the most price worthy memory card on the market, regarding size and transfer speeds. The best prices can always be found by searching on the internet. We recommend you to check prices continuously since they change from day to day.