SD Cards

SD cards, short for secure digital cards, are compact memory cards commonly used for storage in portable devices.


What does an SD card do?


Like most portable devices, a memory card allows you to carry your files and media with you. They are removable cards which store data from a device such as a digital camera or smartphone. Some PCs and laptops come with an SD card slot too, or you can purchase a card adapter separately. The compact nature of the card makes it easy to integrate into portable devices.


What size are SD cards?


SD cards come in three different physical sizes, standard, mini and micro. The size you choose depends on which device you plan to use and what card it can be used with.


Each SD memory card will have a capacity size too, given in GB or MB. This refers to the amount of data that can be stored on the card. Larger capacities will be more expensive so it is best to choose an SD memory card that meets your storage needs.


Why would you need an SD card?


Most devices today come with built-in memory storage to a certain capacity. However, it is very easy to use their internal memory up, and that is where SD cards are useful. They add-on to your personal device that can greatly boost the amount of media you can store at one time. You will not have to worry about having to delete important photos from your camera, or music from your smartphone. You can keep adding more to your library.


What is SDUC/SDXC/SDHC?


  • SDUC stands for Secure Digital Ultra Capacity. This supports memory cards up to 128TB.

  • SDXC stands for Secure Digital eXtended Capacity. SDXC cards support up to 2TB.

  • SDHC stands for Secure Digital High Capacity. SDHC card refers to SD cards which have a higher storage capacity, usually over 4GB.

What is Speed Class?


Speed class is a standard developed by the SD association. Speed Class, UH Speed Class and Video Speed Class are given to indicate the minimum writing speed of a memory card. They include:


  • Speed Class - 2, 4, 6, 10

  • UH Speed Class - UHS-I, UHS-3

  • Video Speed Class - V6, V10, V30, V60, V90

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Description Price Card Format Capacity Industrial Speed Class Rating Nand Type Series Temperature Range X Speed Rating
RS庫存編號 758-2571
製造零件編號TS4GSDHC10
BrandTranscend
HK$105.05
單位
SDHC 4 GB - Class 10 MLC - - -
RS庫存編號 144-8086
製造零件編號DS2A-512I81W1B
BrandInnoDisk
HK$251.04
單位
SD 512 MB Yes Class 6 SLC - -40 → +85°C -
RS庫存編號 914-5082
製造零件編號LSD32GCBEU633
BrandLexar
HK$200.46
單位
SDHC 32 GB - Class 10 SLC 633x - -
RS庫存編號 758-2552
製造零件編號TS2GSDC
BrandTranscend
HK$98.77
單位
SD 2 GB - Class 1 MLC - - -
RS庫存編號 750-4798
製造零件編號43963
BrandVerbatim
HK$94.82
單位
SDHC 32 GB - Class 10 - - - -
RS庫存編號 758-2556
製造零件編號TS4GSDHC4
BrandTranscend
HK$91.79
單位
SDHC 4 GB - Class 4 MLC - - -
RS庫存編號 874-3881
製造零件編號RP-SDFC08DE1
BrandPanasonic
HK$1,517.48
單位
SDHC 8 GB Yes Class 10 SLC FX -40 → +85°C -
RS庫存編號 874-3893
製造零件編號RP-SDF02GDE1
BrandPanasonic
HK$457.36
單位
SD 2 GB Yes Class 10 SLC FX -40 → +85°C -
RS庫存編號 874-3900
製造零件編號RP-SDPC04DE1
BrandPanasonic
HK$215.42
單位
SD 4 GB - Class 4 MLC P - -
RS庫存編號 124-9629
製造零件編號TS64GSDU3
BrandTranscend
HK$508.28
單位
SDXC 64 GB - Class 10, UHS-1 U3 MLC - -25 → +85°C -
RS庫存編號 183-9365
製造零件編號DS2A-01GI81C1B
BrandInnoDisk
HK$294.83
單位
SD 1 GB Yes Class 10 SLC - 0 → +70°C -
RS庫存編號 144-8085
製造零件編號DS2A-256I81W1B
BrandInnoDisk
HK$244.14
單位
SD 256 MB Yes Class 6 SLC - -40 → +85°C -
RS庫存編號 189-7899
製造零件編號LSD128B667
BrandLexar
HK$434.72
單位
SDXC 128 GB - Class 10, UHS I (U3) - - +0 → +70°C -
RS庫存編號 183-9366
製造零件編號DS2A-02GI81C1B
BrandInnoDisk
HK$476.67
單位
SD 2 GB Yes Class 10 SLC - 0 → +70°C -
RS庫存編號 173-9491
製造零件編號TS128MSD100I
BrandTranscend
HK$233.45
單位
SD 128 MB Yes Class 10 SLC - -40 → +85°C -
RS庫存編號 914-5095
製造零件編號LSD128CBEU633
BrandLexar
HK$390.45
單位
SDXC 128 GB - Class 10, UHS-1 U3 SLC 633x - -
RS庫存編號 183-9362
製造零件編號DS2A-128I81C1B
BrandInnoDisk
HK$191.27
單位
SD 128 MB Yes Class 6 SLC - 0 → +70°C -
RS庫存編號 124-9631
製造零件編號TS256GSDU3
BrandTranscend
HK$2,214.33
單位
SDXC 256 GB - Class 10, UHS-1 U3 MLC - -25 → +85°C -
RS庫存編號 146-5567
製造零件編號AF512SDI-ZADXM
BrandATP
HK$170.81
單位
SD 512 MB Yes Class 6 SLC - -40 → +85°C -
RS庫存編號 123-9680
製造零件編號44026
BrandVerbatim
HK$495.40
單位
SDXC 256 GB No Class 10, UHS-1 U1 - Premium - -