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A flash memory format introduced in 1994 by SanDisk. At approximately 36x43x3mm, CompactFlash (CF) cards are much larger than the SD Cards used in most cameras; however, they are still used in digital SLRs, and many photographers find the larger size harder to misplace. CompactFlash supports both 3.3v and 5v circuits and can hold up to 512GB as of 2015.

Data transfer speeds are designated as multiples of the first CD-ROM rate of 150 KB/sec. For example, 1,000x = 150 MB/sec. See CD-ROM drives.

CF Cards Use the PC Card Interface
Type I CF cards are 3.3mm thick and commonly used for camera storage. Type II cards are 5mm thick and were previously used for miniature hard drives, modems and Ethernet. On earlier laptops, adapters enabled the 50-pin Type II CF card to plug into the 68-pin PC Card slot. See Microdrive and PC Card.

CompactFlash Module
CompactFlash modules are still used in digital SLR cameras with capacities up to 512GB. For form factor comparisons, see memory card.
References in periodicals archive ?
SanDisk Corporation, a global leader in flash memory storage solutions, today announced the availability of the 256GB SanDisk Extreme Pro CompactFlashA memory card, the world s first high-capacity, high-performance CompactFlash card with the latest Video Performance Guarantee (VPG-65) specification.
SanDisk Corporation (NASDAQ:SNDK), a provider of flash memory cards, has launched its new high-capacity CompactFlash card, the company announced yesterday.
The SanDisk Extreme Pro CompactFlash card raises the bar for professional-grade memory cards.
The SST55LC100 CompactFlash Card Controller from Silicon Storage Technologies (SST) recognizes the control, address, and data signals on the CompactFlash bus and translates them into memory accesses to the standard NAND-type flash media.
Linksys has launched the Wireless-G CompactFlash Card (WCF54G), the latest addition to the current Wireless-G line.
last week announced its 320MB Type II CompactFlash card, the highest capacity available in this form factor.
6-megapixel DC265 digital camera, a SanDisk-produced 64MB CompactFlash card carrying the Kodak Picture Card label, a comprehensive collection of interactive imaging software for both Macintosh and Windows platforms, a Kaidan custom panoramic tripod head and an interactive imaging software script.
Testing of the Ultra Performance 30X CompactFlash Card indicates that it achieves a read speed of up to 4.
TELECOMWORLDWIRE-18 April 2002-New Brain Boxes CompactFlash card has full support for Microsoft Windows CE '.
Worldwide Computer Products News-18 April 2002-New Brain Boxes CompactFlash card has full support for Microsoft Windows CE '.
Dane-Elec has introduced a CompactFlash card with 512Mb of memory power.
The CFast work group was formed in July 2007 to develop the CFast specification for a CompactFlash card with a SATA (Serial ATA) interface.