¿Si Donaldson. I STANDARD BREATHER FILTRATION SOLUTIONS Disk Drive The Standard Breather Filter (SBF) is comprised of a filtration membrane and a pressure-sensitive adhesive ring for securing the filter to the drive. A diffusion channel can be incorporated within the adhesive layers. The SBF captures particulate contamination as air flows into the drive through the filtration membrane. The SBF is placed over a breather hole or a diffusion channel. While this filter can be located outside the disk drive, ideally, it is located inside the drive with a diffusion channel between the breather and the outside environment. The filter location should be in a low-pressure area of the drive so air can enter through the breather. Generally, the best location is on the cover as close as possible to the spindle. Airflow restriction into the drive is affected by the size of the filter, choice of filter materials, and the design of the diffusion channel. There is a trade-off between the airflow restriction and the amount of diffusion protection. PTFE Membrane

STANDARD BREATHER FILTER (SBF) PRODUCT GUIDELINES AND SPECIFICATIONS Silicone-free release liner available. Designed to pass the most stringent cleanliness specifications. Manufactured in a cleanroom environment. Contact Donaldson today for more information! Disk Drive Standard Breather Filter (07/10) © 2010 Donaldson Company. All Rights Reserved. Information in this document is subject to change without notice. Seoul, Korea Hong Kong