4GB 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 Stock No. 758-2556
Mfr. Part No.TS4GSDHC4
BrandTranscend
£8.40
Each
Units
SDHC 4 GB - Class 4 MLC - - -
RS Stock No. 758-2571
Mfr. Part No.TS4GSDHC10
BrandTranscend
£7.60
Each
Units
SDHC 4 GB - Class 10 MLC - - -
RS Stock No. 874-3900
Mfr. Part No.RP-SDPC04DE1
BrandPanasonic
£18.46
Each
Units
SD 4 GB - Class 4 MLC P - -
RS Stock No. 144-8089
Mfr. Part No.DS2A-04GI81W1B
BrandInnoDisk
£55.04
Each
Units
SD 4 GB Yes Class 10 SLC - -40 → +85°C -
RS Stock No. 173-9483
Mfr. Part No.TS4GCFX520I
BrandTranscend
£92.64
Each
Units
CFast 4 GB Yes - SLC - -40 → +85°C -
RS Stock No. 173-9497
Mfr. Part No.TS4GSDHC100I
BrandTranscend
£72.00
Each
Units
SD 4 GB Yes Class 10 SLC - -40 → +85°C -
RS Stock No. 180-5791
Mfr. Part No.INMSDH4G4V2
£6.37
Each
Units
MicroSDHC 4 GB - Class 4 - - 0 → +60°C -
RS Stock No. 146-5583
Mfr. Part No.AF4GUDI-WACXM
BrandATP
£51.07
Each
Units
MicroSDHC 4 GB Yes Class 10, UHS-1 U1 SLC - -40 → +85°C -
RS Stock No. 146-5576
Mfr. Part No.AF4GSD3A-WAAIX
BrandATP
£14.94
Each
Units
SDHC 4 GB Yes Class 10, UHS-1 U1 AMLC - -40 → +85°C -
RS Stock No. 146-5570
Mfr. Part No.AF4GSDI-WADXM
BrandATP
£53.93
Each
Units
SDHC 4 GB Yes Class 10, UHS-1 U1 SLC - -40 → +85°C -
RS Stock No. 180-5814
Mfr. Part No.INMSDH4G10-20V2
£6.39
Each
Units
MicroSDHC 4 GB - Class 10 - - 0 → +60°C -
New
RS Stock No. 187-1626
Mfr. Part No.TS4GSDC300S
BrandTranscend
£6.99
Each
Units
- 4 GB - Class 10 TLC - -25 → +85°C -
New
RS Stock No. 183-9397
Mfr. Part No.AF4GSD3A-WAAXX
BrandATP
£16.87
Each
Units
SDHC 4 GB Yes Class 10, UHS-1 U1 SLC S700Sc -25 → +85°C -
New
RS Stock No. 183-9390
Mfr. Part No.AF4GUD3A-WAAXX
BrandATP
£13.95
Each
Units
MicroSDHC 4 GB Yes Class 10, UHS-1 U1 SLC S700Sc -25 → +85°C -
RS Stock No. 180-5807
Mfr. Part No.INSDH4G10V1
£6.44
Each
Units
SDHC 4 GB - Class 10 - - 0 → +60°C 200x
RS Stock No. 180-5815
Mfr. Part No.INIMSD4GPSLC
£17.23
Each
Units
MicroSDHC 4 GB Yes UHS-1 SLC - -40 → +85°C -
New
RS Stock No. 183-9367
Mfr. Part No.DS2A-04GI81C1B
BrandInnoDisk
£45.62
Each
Units
SDHC 4 GB Yes Class 10 SLC - 0 → +70°C -