Secure Digital (SD, SDHC, SDXC, SDUC) |  From top to bottom: SD, miniSD, microSD | | Media type | Memory card |
|---|
| Capacity | - SD: Up to 2 GB
- SDHC: over 2 GB to 32 GB
- SDXC: over 32 GB to 2 TB
- SDUC: over 2 TB to 128 TB
|
|---|
| Block size | Variable |
|---|
| Read mechanism | - Standard: 12.5 MB/s
- High-speed: 25 MB/s
- UHS-I: 50 MB/s or 104 MB/s
- UHS-II: 156 MB/s full-duplex, or 312 MB/s half-duplex
- UHS-III: 312 MB/s full-duplex, or 624 MB/s full-duplex
- Express: ≥ 985 MB/s full-duplex
|
|---|
| Write mechanism | Variable |
|---|
| Standard | SD Standard |
|---|
| Developed by | SD Association |
|---|
| Dimensions | - Standard:
- 32.0×24.0×2.1 mm (1.260×0.945×0.083 in)
1,612.8 mm3 (0.09842 in3) - Mini:
- 21.5×20.0×1.4 mm (0.846×0.787×0.055 in)
602 mm3 (0.0367 in3) - Micro:
- 15.0×11.0×1.0 mm (0.591×0.433×0.039 in)
165 mm3 (0.0101 in3)
|
|---|
| Weight | - Standard: ~2 g
- Mini: ~800 mg
- Micro: ~250 mg
|
|---|
| Usage | Portable devices, such as digital cameras and mobile phones (including most smartphones) |
|---|
| Extended from | MultiMediaCard |
|---|
| Released | August 1999 |
|---|
|
Secure Digital (SD, SDHC, SDXC, SDUC) |  From top to bottom: SD, miniSD, microSD | | Media type | Memory card |
|---|
| Capacity | - SD: Up to 2 GB
- SDHC: over 2 GB to 32 GB
- SDXC: over 32 GB to 2 TB
- SDUC: over 2 TB to 128 TB
|
|---|
| Block size | Variable |
|---|
| Read mechanism | - Standard: 12.5 MB/s
- High-speed: 25 MB/s
- UHS-I: 50 MB/s or 104 MB/s
- UHS-II: 156 MB/s full-duplex, or 312 MB/s half-duplex
- UHS-III: 312 MB/s full-duplex, or 624 MB/s full-duplex
- Express: ≥ 985 MB/s full-duplex
|
|---|
| Write mechanism | Variable |
|---|
| Standard | SD Standard |
|---|
| Developed by | SD Association |
|---|
| Dimensions | - Standard:
- 32.0×24.0×2.1 mm (1.260×0.945×0.083 in)
1,612.8 mm3 (0.09842 in3) - Mini:
- 21.5×20.0×1.4 mm (0.846×0.787×0.055 in)
602 mm3 (0.0367 in3) - Micro:
- 15.0×11.0×1.0 mm (0.591×0.433×0.039 in)
165 mm3 (0.0101 in3)
|
|---|
| Weight | - Standard: ~2 g
- Mini: ~800 mg
- Micro: ~250 mg
|
|---|
| Usage | Portable devices, such as digital cameras and mobile phones (including most smartphones) |
|---|
| Extended from | MultiMediaCard |
|---|
| Released | August 1999 |
|---|
|