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Ohara's GD-FHT are finely polished glass disks used in the testing of
magnetic recording heads for Hard Disk Drives. We supply two types of
disks, Conventional and Lower Microwaviness (Wa). The Conventional disks are well suited
for fly height testing above 0.2 u-inch, while the Lower Wa disks are
targeting lower fly height values. GD-FHT disks have better electrical
properties than conventional disks and will provide better ESD
protection. These disks have excellent mechanical strength and can
significantly improve your production yields.
Advantages
- Conventional GD-FHT disks for > 0.2 u-inch
- Lower Microwaviness (Wa) GD-FHT disks for < 0.2 u-inch
- Better ESD protection than BK7
- More scratch resistant than BK7
- Extremely smooth super polished surfaces
- Enables ultra low fly height testing
- All form factors available
- Re-Polishing service available
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