Companies listed here manufacture components, manufacturing equipment, or provide services used in the manufacture of disk drives.
3M (NYSE:MMM) (Materials)
Abrasive Technology (Diamond grinding tools)
Adaptec (NASDAQ:ADPT) (Controller chips, software)
ADE Technologoies (Non-contact gauges)
Adept Technology (NASDAQ:ADTK) (Clean room and automation systems)
Adhesives Research (Low-outgassing adhesive tapes)
Advanced Hardware Architectures (Semiconductors)
Advanced RISC Machines (Embedded microprocessors for servo control & other functions)
AKM Semiconductor (Mixed signal chips, optical drive controllers)
AMP (Tyco) (Connectors)
Analog Devices (NYSE:ADI) (Read channel and servo positioning chips)
Autocam (NASDAQ:ACAM) (Thin baseplates and machined components)
Avery Dennison (Low outgassing specialty adhesives)
Blue Sky Research (Optical drive components)
Cirrus Logic (NASDAQ:CRUS) (CD-ROM and rigid disk drive controllers)
Connector Resources Unlimited (CRU) (Storage subsystems plug-in bays and other components)
CTS Corporation (NYSE:CTS) (Hybrid components, interconnects)
Donaldson Company (Particulate filters for disk drives)
Dover Instrument (Manufacturing equipment)
Dow Chemical Company (NYSE:DOW) (Data storage materials, substrates, e-blocks)
Eco-Snow Systems (Cleaning process equipment)
Energy Conversion Devices (NASDAQ:ENER) (Phase change technology)
Engis Ltd. (Fine abrasives and slurries)
Evans Analytical Group (Materials and failure analysis)
Exar (NASDAQ:EXAR) (Semiconductors)
Flextronics (OEM manufacturing services)
Guzik Technical Enterprises (Test equipment)
HEI (Thick film microelectronics)
Hitachi America (Motor drivers, preamps, read channels, microcontrollers, ASICS)
Hutchinson Technology (Head suspensions)
IBM Microelectronics (Microcontrollers)
IDT (Clocks, ASICs, Fibre Channel transceivers)
Imation Corp. (NYSE:IMN) (Formerly 3M Data Storage and Imaging Company)
IMP (Semiconductors)
Infineon Technologies (Semiconductors for drives)
Innovex (NASDAQ:INVX) (Thin film lead wire assemblies, flex circuits)
Kanthal Palm Coast (Formerly HP Reid Co.) (Fine guage wire for heads and actuators)
KLA-Tencor (NASDAQ:KLAC) (Head and disk inspection & metrology equipment)
LeCroy (NASDAQ:LCRY) (Test instruments)
LSI Logic (NYSE:LSI) (Disk drive controller chips)
Loctite (NYSE:LOC) (Low outgassing adhesives and compounds)
Magnecomp Precision Technology (Head suspensions, etc.)
Magnetic Recording Solutions (Media test equipment)
Marvell Semiconductor (Disk drive read channels)
Molex (NASDAQ:MOLX) (Connectors)
National Semiconductor (NYSE:NSM) (Semiconductors)
Newport Corporation (Precision positioning and measuring equipment)
Nidec (Spindle motors)
NXP Semiconductors (Motor control, read channel chips)
Poco Graphite (Graphite sputtering targets)
QLogic (Controller chips)
Rogers Corporation (AMEX:ROG) (Flex circuits, elastomers, other)
Sankyo Seiki (FDD spindle and stepping motors, CD-ROM optical pickups)
Seagull Solutions (Air bearing and test spindles)
Sheldahl (NASDAQ:SHEL) (Flexible circuits)
Spectra-Physics Laser Data Systems (Laser-based machine tools: media texturing)
SpeedFam-IPEC (Disk processing equipment & supplies)
ST Microelectronics (Read channels, controllers, DSP, other)
Strasbaugh (Disk polishers)
Surface Technology Systems (TF head manufacturing equipment)
TDK (Media, ferrite materials, components)
Texas Instruments (Semiconductors)
Texwipe (Lube-buff & texture tapes, swabs, wipers)
Thomas West (Buff, wiping, polishing and texturing tapes)
Toray Marketing & Sales (America) (Optical storage media)
Trek, Inc (EOS/ESD Instrumentation)
Veeco (Etch & deposition process equipment, process metrology equipment)
Xyratex (Test equipment, contract manufacturing)
Zilog (NYSE:ZLG) (Microprocessors, controllers, DSP)
Zygo (NASDAQ:ZIGO) (Precision non-contact measuring equipment for disk heads, flying height, runout.