1. Hamamatsu Photonics
  2. Harris
  3. Hewlett-Packard
  4. Hitachi
  5. HMP (-> Mosaic Semiconductor)
  6. Holtek Semiconductor
  7. Honeywell
  8. Hualon Microelectronics Corporation (HMC)
  9. Hytec Microsystems
  10. Hyundai
  11. IBM Microelectronics
  12. IC Ensemble
  13. IC Works
  14. iC-Haus
  15. I-Cube
  16. IDT
  17. IMP
  18. Impala Linear
  19. Infineon Technologies
  20. Information Storage Devices (ISD)
  21. Innovative Semiconductors
  22. Integrated Circuit Systems (ICS)
  23. Integrated Silicon Solution (ISSI)
  24. Integrated Technology Express (ITE)
  25. Integrated Telecom Express (ITeX)
  26. Intel
  27. InterFET
  28. International Rectifier
  29. Intersil (-> Harris)
  30. Isocom Components
  31. Isocom Lli
  32. Itran Communications
  33. ITT Itermetall (-> Micronas Intermetall)
  34. IXYS
  35. JMAR Semiconductor
  36. Kawasaki LSI
  37. KDI Triangle
  38. Kingbright LED
  39. Knox Semiconductor
  40. Kopin
  41. Korea Electronics (KEC)
  42. Krypton Isolation