Compact Flash Cards

Compact Flash cards (CF) are a type of removable flash memory card format first introduced by SanDisk in 1994. Known for their mechanical robustness, stable electrical interface, and high data integrity, they are widely used in professional portable electronics, ranging from high-end DSLR cameras to industrial controllers and embedded systems. As integrated memory in many devices is often insufficient for high-resolution media capture or continuous data logging, CompactFlash cards provide reliable storage expansion for demanding applications.

RS Singapore supplies a range of CompactFlash-based solutions aligned with evolving technology standards, including traditional CompactFlash (CF), CFast, and CFexpress Type B cards, subject to host device compatibility.

Types of Compact Flash Cards

When selecting a CompactFlash (CF) card, it is important to consider both its physical form factor and its supported interface standards to ensure compatibility with the host device. RS carries an extensive inventory of CompactFlash cards, categorised by physical type and data transfer capability, to help you find the perfect match for your equipment.

By Physical Type

• Type I CompactFlash Cards: This is the most common physical format for Compact Flash cards, measuring 3.3mm in thickness. They are widely used in digital cameras and industrial equipment and are compatible with both Type I and Type II CompactFlash slots.
• Type II CompactFlash Cards: Slightly thicker at 5mm, Type II cards were originally designed to support Microdrives or additional internal components. While less common today, they require a Type II-compatible slot that also accepts Type I cards.

By UDMA Rating

CompactFlash cards that support Ultra Direct Memory Access (UDMA) operate under defined transfer modes ranging from UDMA 0 to UDMA 7. Higher UDMA modes enable increased maximum transfer speeds and lower latency, improving performance during sustained read and write operations.

For instance, a UDMA 7 card can reach speeds of up to 167 MB/s, whereas a UDMA 0 card is limited to approximately 16.7 MB/s. Actual performance depends on both the card and the host device’s controller. Selecting an appropriate UDMA rating is essential for applications that require fast, consistent data transfer, such as continuous image capture or high-throughput industrial recording.

Applications of Compact Flash Cards

The durability of the Compact Flash format makes it the preferred choice for sectors where data loss is not an option and environmental conditions are demanding. These include:

• Photography & Videography: Professional photographers and videographers rely on CF cards to handle large RAW files and high-definition video streams without lag. Their rigid form factor also provides greater resistance to mechanical damage during field use.
• Factory Automation: In the realm of robotics and PLC systems, an industrial Compact Flash card is often used to store OS images and critical configuration data. Unlike standard consumer cards, these are built to withstand the constant vibrations and electrical interference found on a manufacturing floor.
• Automotive Industries: Modern vehicle diagnostic systems and infotainment units utilise industrial-grade Compact Flash for stable data storage across wide operating temperature ranges, meeting automotive thermal and reliability requirements.
• Medical Devices: From portable ultrasound machines to patient monitoring systems, high-integrity Compact Flash cards store vital diagnostic information. Their reliability ensures that critical medical data remains uncorrupted during high-stakes procedures.
• Data Backup & Archiving: Due to their lack of moving parts and resistance to magnetic fields, these cards are excellent for long-term data archiving. Businesses use them as a reliable medium to back up essential system logs and financial records.

How to Choose the Right CompactFlash Card

Choosing the right CompactFlash card depends on matching performance, durability, and compatibility requirements with your application. The following factors help ensure reliable operation in both commercial and industrial environments.

• Host Device Compatibility: Always verify the supported CompactFlash type, interface standard, and UDMA mode in the host device’s datasheet. Ensuring electrical and physical compatibility prevents performance bottlenecks and avoids installation issues.
• Write Endurance and Performance: Applications involving frequent data writes, continuous logging, or sustained recording benefit from CompactFlash cards rated for high program/erase cycles and consistent write speeds, as it reduces the risk of premature failure.
• Operating Environment: Consider the temperature range, vibration resistance, and humidity tolerance of the CompactFlash, particularly for use in industrial automation, transportation, or outdoor systems where environmental stress can impact data integrity.
• Product Lifecycle and Availability: For long-term or mission-critical projects, selecting CompactFlash cards with stable production lifecycles helps minimise requalification efforts and ensures continuity during maintenance, expansion, or system upgrades.

Trusted Compact Flash Cards Supplier in Singapore

RS Singapore is your trusted supplier and distributor of professional-grade Compact Flash cards, MicroSD and SD cards, offering an extensive selection from leading brands such as InnoDisk, Transcend, and Siemens at competitive prices. We also offer accessories, such as protective storage cases, to safeguard your high-value memory from physical impact and environmental hazards.

Shopping at RS is designed for efficiency: simply browse our user-friendly website, filter by capacity or speed rating, and add your chosen CF card to your cart. We provide reliable, fast delivery across Singapore for all orders. For comprehensive details on our shipping and lead times, please refer to our dedicated Delivery page.