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Transcend 2 GB MicroSD Micro SD Card

Eaton 2 GB Industrial MicroSD SD Card

WAGO 2 GB Industrial MicroSD SD Card

InnoDisk 2 GB Industrial MicroSDHC Micro SD Card, Class 6 UHS-I, U1


SD cards, or Secure Digital cards, are removable, compact memory cards designed for data storage in portable devices like digital cameras and smartphones. Many PCs and laptops feature built-in SD card slot, or you can easily purchase an adapter to use them. The smallest member of the SD card family is the Micro SD card (often called microSD), ideal for compact devices such as smartphones and action cameras. Enhance your device's storage capacity and enjoy seamless data transfer with SD cards, the perfect solution for your storage needs in Australia.

With proper usage and storage, SD cards can last between 10 to 15 years, depending on the brand, frequency of use, and environmental factors. However, like all flash memory devices, they have a limited number of write and erase cycles, which can impact longevity over time.

## **SD Card Sizes**

SD cards come in three different physical sizes: Standard SD, Mini SD, and Micro SD. The size you choose depends on which device you plan to use it in. Each SD memory card has a capacity measured in GB (gigabytes) or MB (megabytes), which determines how much data can be stored. Larger capacities generally cost more, so selecting an SD memory card that aligns with your storage needs is the most cost-effective approach. 

### **Standard SD Card**

The Standard SD card is the largest in physical size, measuring 32mm × 24mm × 2.1mm. It is commonly used in digital cameras, DSLRs, camcorders, and some laptops. Most standard SD cards are compatible with SDHC (High Capacity) and SDXC (Extended Capacity) formats, allowing for greater storage capabilities. While they are too large for smartphones and tablets, they offer high-speed data transfer rates, making them ideal for professional photography and video recording.

### **Mini SD Card**

The Mini SD card, measuring 21.5mm × 20mm × 1.4mm, was originally designed for early-generation mobile phones and small electronic devices. While not as widely used today, mini SD cards can still be found in older mobile devices, handheld gaming consoles, and certain industrial applications. They can be used in standard SD slots with an adapter, providing backward compatibility.

### **Micro SD Card**

The Micro SD card is the smallest form factor, measuring 15mm × 11mm × 1mm, and is widely used in smartphones, tablets, action cameras, drones, and portable gaming consoles. Due to its compact size and high capacity, microSD cards are ideal for expanding mobile storage. Many micro SD cards come with adapters, allowing them to function as standard SD cards in compatible devices.

## **Why Would You Need an SD Card?**

Most modern devices come with built-in storage but it’s easy to reach their capacity, especially with high-resolution media files. This is where SD cards come in handy — they provide additional storage, allowing you to store more photos, videos, and music without worrying about deleting important files.

For [single-board computers (SBCs)](https://au.rs-online.com/web/c/raspberry-pi-arduino-development-tools/) like the Raspberry Pi, SD cards are essential, as they serve as the primary storage for the operating system. If you're looking for Raspberry Pi micro SD cards preloaded with NOOBS, visit our sister site, OKdo, for a full range of Raspberry Pi and SBC solutions.

## **What is SDUC/SDXC/SDHC?**

SD cards come in different formats based on their storage capacity and compatibility with devices. Understanding the differences between SDUC, SDXC, and SDHC can help you choose the right card for your needs.

- **SDHC Memory Cards:** Reliable for Full HD video recording. Great for digital cameras, dash cams, security cameras, and portable media players.
- **SDXC Memory Cards:** Ideal for capturing 4K video. Class 10 SDXC memory cards handle large data with ease, keeping footage clear. Perfect for camcorders, DSLR cameras, action cameras, gaming consoles, and laptops needing extra storage.
- **SDUC Memory Cards:** Designed for next-gen ultra-high storage needs. Supports massive data handling, making it best for 8K video production, professional video editing, high-end gaming, and industrial storage applications.

## **What is Speed Class?**

Speed class is a standard developed by the SD association. They include:

- **Speed Class (C2, C4, C6, C10):** These numbers represent minimum write speeds in MB/s. Class 10 (C10) is the most common for Full HD video recording and general storage needs.
- **UH Speed Class (UHS-I, UHS-3):** UHS-I (U1) supports at least 10MB/s write speed, while UHS-3 (U3) guarantees 30MB/s minimum write speed, perfect for 4K video recording and high-speed photography.
- **Video Speed Class (V6, V10, V30, V60, V90):** Designed for high-resolution video recording. V6 to V30 are great for Full HD and 4K videos, while V60 and V90 support 8K video recording in professional cameras, drones, and high-end camcorders.

For optimal performance, always match the speed class of your SD card to your device requirements to prevent lag, buffering, or slow data transfers.

## **Industrial Applications of SD Cards**

SD cards play a crucial role in various industrial applications where reliable data storage and high-speed performance are essential. Some key industrial uses include:

- **Automotive systems:** Used in dash cams, GPS navigation, and vehicle diagnostics for continuous data logging.
- **Medical equipment:** Securely stores patient records, imaging data, and real-time monitoring information in diagnostic devices.
- **Surveillance & security systems:** Enables high-definition video recording and playback for CCTV cameras and security systems.
- **Embedded systems & IoT devices:** Industrial SD cards provide durable storage for factory automation, smart meters, and edge computing devices.
- **Drones & robotics:** Ensures high-speed data capture and processing for AI-driven automation and aerial imaging.

## **Signs of a Corrupted SD Card**

A damaged or corrupted SD card can lead to data loss and device malfunction. Look out for these common warning signs:

- **Device fails to recognise the SD Card:** If your device does not detect the card, it may be corrupted or physically damaged.
- **Frequent read/write errors:** Error messages like “card cannot be read” or “file system error” indicate corruption.
- **Missing or inaccessible files:** If previously saved data disappears or is unreadable, the card may have bad sectors.
- **Slow performance:** A sudden drop in speed when transferring or accessing files may suggest damage.
- **File system corruption:** If prompted to format the SD card, it may have become corrupted due to improper ejection or power loss.

## **How to Choose the Right SD Memory Card**

When selecting an SD memory card, consider these key factors:

- **Storage capacity:** Choose from 16GB to 1TB, depending on your data needs.
- **Speed class & UHS rating:** Higher-speed cards (UHS-3, V30, V60, or V90) are ideal for high-resolution video recording and fast file transfers.
- **Device compatibility:** Ensure the card type (SDHC, SDXC, or SDUC) matches your device’s specifications.
- **Durability:** Opt for industrial-grade SD cards that are waterproof, shockproof, and temperature-resistant for extreme environments.
- **Brand & quality:** Choose trusted brands like [SanDisk](https://au.rs-online.com/web/b/sandisk/), [Kingston](https://au.rs-online.com/web/b/kingston/), and [InnoDisk](https://au.rs-online.com/web/b/innodisk/) for reliable performance and longevity.
- **Price & value:** Consider the cost of SD memory cards based on performance and durability for long-term savings.

## **Trusted Memory Card Supplier & Distributor in Australia**

[RS](https://au.rs-online.com/web/) is a leading supplier of SD memory cards in Australia, offering high-performance storage solutions for industrial and commercial applications. Whether you need an SD card for a Raspberry Pi, surveillance system, or industrial-grade equipment, RS provides affordable SD cards with competitive pricing across all storage capacities. 

Businesses and professionals can also buy SD cards in bulk, ensuring cost-effective solutions for large-scale projects. Find microSD, SDHC, and SDXC memory cards at various price points to fit your budget.

## **Buy SD Memory Cards Online from RS**

Shop for SD memory cards online at RS Australia and enjoy nationwide doorstep delivery. We offer fast shipping, ensuring quick order processing with delivery times of 2-5 business days for most locations.

Ordering from RS is simple — browse our online catalogue, add items to your cart, and check out securely. Whether you're looking for a single card or need to buy SD cards in bulk, our website provides detailed product specifications and competitive SD card pricing to help you make an informed choice. Visit our [Delivery Information](https://au.rs-online.com/web/content/support/all-articles/delivery) page for more details.



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