Get In Touch

Online Support

The best way for MOSIS customers and the general public to contact MOSIS is by sending a message through the MOSIS Customer Support and Inquiry System. You can create a support account using your email to submit questions and requests.


  • Accounts Receivable:
  • Accounts Payable:
  • Purchase Orders:
  • Web Site Issues:

Mailing Address

MOSIS Integrated Circuit Fabrication Service
USC Information Sciences Institute
4676 Admiralty Way, 7th floor
Marina del Rey, CA 90292-6695


Customer Support:
If you have an urgent customer service or technical support
issue, you may contact our customer support line at +1-310-448-9400.
Representatives are available Monday through Friday (except holidays) from 8:30 am to 5:30 pm Pacific Time.

Purchase Orders:
Please direct purchase order questions to +1-310-448-8212