Editing SD card (section)

{{Short description|Type of memory storage for portable devices}}
{{Redirect|SDHC|the gene|SDHC (gene)}}
{{See also|Comparison of memory cards}}
{{For|the earlier form|MultiMediaCard}}
{{use dmy dates|date=October 2024}}
{{Infobox storage medium
| name = Secure Digital (SD)
| logo = [[File:SD-Logo.svg|frameless|upright=0.5|class=skin-invert]]
| image = SD Cards.svg
| caption = From top to bottom: SD, miniSD, microSD
| type = [[Memory card]]
| capacity = {{ubli
 | '''SD''': Up to {{Nowrap|2 GB}}
 | '''SDHC''': Up to {{Nowrap|32 GB}}
 | '''SDXC''': Up to {{Nowrap|2 TB}}
 | '''SDUC''': Up to {{Nowrap|128 TB}}
 }}
| blocksize = Variable
| read = {{ubli
 | '''Default''': 12.5&nbsp;MB/s
 | '''High-speed''': 25&nbsp;MB/s
 | '''UHS-I''': 52&nbsp;MB/s (SDR50, DDR50) or 104&nbsp;MB/s (SDR104)
 | '''UHS-II''': 156&nbsp;MB/s full-duplex or 312&nbsp;MB/s half-duplex
 | '''UHS-III''': 312&nbsp;MB/s full-duplex or 624&nbsp;MB/s half-duplex
 | '''Express''': Up to 3,940&nbsp;MB/s
 }}
| owner = [[SD Association]]
| dimensions = {{Unbulleted list
  | '''Standard''':
  | {{cvt|32|*|24|*|2.1|mm}}
  | {{cvt|1612.8|mm3}}
  | '''Mini''':
  | {{cvt|21.5|*|20|*|1.4|mm}}
  | {{cvt|602|mm3}}
  | '''Micro''':
  | {{cvt|15|*|11|*|1|mm}}
  | {{cvt|165|mm3}}
  }}
| weight = {{Unbulleted list
 | '''Standard''': {{Nowrap|~2 [[Gram|g]]}}
 | '''Mini''': {{Nowrap|~0.8 g}}
 | '''Micro''': {{Nowrap|~0.25 g}}
 }}
| extended from = [[MultiMediaCard]]
| extended to = 
| released = August 1999
| discontinued = 
}}

'''Secure Digital (SD)''' is a [[proprietary hardware|proprietary]], [[non-volatile memory|non-volatile]], [[flash memory]] card format developed by the [[SD Association]] (SDA). Owing to their compact size, SD cards have been widely adopted in a variety of portable consumer electronics, including [[digital camera]]s, [[camcorder]]s, [[video game console]]s, [[mobile phone]]s, [[action camera]]s, and [[Unmanned aerial vehicle|camera drones]].<ref name="FB" /><ref name="AD" />

The SD format was introduced in August 1999 by [[SanDisk]], [[Panasonic]] (then known as Matsushita), and [[Kioxia]] (then part of [[Toshiba]]). It was designed as a successor to the [[MultiMediaCard]] (MMC) format, introducing several improvements aimed at enhancing usability, durability, and performance, which contributed to its rapid emergence as an industry standard.

To manage the licensing and intellectual property rights related to the format, the three companies established SD-3C, LLC. In January 2000, they also founded the SDA, a non-profit organization dedicated to developing and promoting SD card standards.<ref name="SD Association">{{cite web |date=2015-03-30 |title=Matsushita Electric, SanDisk and Toshiba to Form SD Association to Promote Next Generation SD Memory Card |url=https://www.toshiba.co.jp/about/press/2000_01/pr0602.htm |url-status=live |archive-url=https://web.archive.org/web/20190101010324/https://www.toshiba.co.jp/about/press/2000_01/pr0602.htm |archive-date=2019-01-01 |access-date=2016-02-23 |publisher=Toshiba}}</ref> As of 2023, the SDA includes approximately 1,000 member companies. The SDA uses a suite of SD-3C-owned trademarked logos to enforce compliance with official specifications and to indicate product compatibility.<ref>{{cite web |date=2010-06-22 |title=Using SD Memory Cards is Easy |url=https://www.youtube.com/watch?v=wX6NwBa1csY |archive-url=https://ghostarchive.org/varchive/youtube/20211029/wX6NwBa1csY |archive-date=2021-10-29 |access-date=2014-01-02 |publisher=SD Association}}{{cbignore}}</ref>