For close to 30 years , OPT HELLAS, has developed an extensive line of CUSTOM DESIGNED Frequency Control Products for use in various electronic markets such as Military, Avionics, Commercial, Wireless, and Instrumentation. Established in 1980, our main facility is located outside of metro Athens- Greece, next to the new Athens International Airport. For more information please email us at
What we offer
OPT Hellas SA offers a complete line of custom designed Quality Frequency
Control Products with the Cost and Delivery benefits of standard type:

- Monolithic Crystal Filters
- Crystal Filters
- Crystal Units
- LC Filters
- Cavity Filters
- Duplexers and Diplexers
- Coil Assemblies.


Flexibilty: Our CAE based design methods and automated testing allow for rapid prototyping and delivery of sample orders per customer specifications.

ISO 9001 Certification
OPT Hellas has been ISO9001 certified since 1998 for the design and manufacturing of telecommunication filters.
For quick access to our product catalogs, please click on the following links: Crystal Filters, LC Filters, Duplexers, Cavity Filters, Preselector Filters.