Small and Effective Crystal Filters for High-Performance RF Design Applications

ECS Inc. offers a wide selection of monolithic crystal filters (MCFs) in both through hole and surface mount design (SMD) packages. These packages feature a broad range of center frequencies, including 10.7 MHz, 21.4 MHz, 45.0 MHz, 70.0 MHz and 90.0 MHz.

Choosing an MCF for Your Application

The monolithic quartz crystal filter offers the stability of a quartz timing device ideal for intermediate frequency filtering. The monolithic crystal design is both cost-effective and space-saving, which is ideal for today’s wireless and telecommunications applications. Through hole filters come in a variety of sizes, which are application-dependent, and ECS Inc. surface mount filters come in industry-standard set sizes. Both have their benefits, and the type of circuit board you build will dictate the type you’ll need.

Learn more about monolithic crystal filters by reviewing this technical guide.

Monolithic Crystal Filters (MCFs) was last modified: October 3rd, 2022 by iFocus Marketing
Support DocsPackage SizeFrequencyOperating
Support Docs
7.00mm x 5.00mm45 MHz-30°C ~ 80°C
Support Docs
3.80mm x 3.80mm45 MHz-30°C ~ 80°C
MCFMCF Datasheet
Support Docs
7.30mm x 2.50mm,
11.10mm x 4.70mm
10.7 MHz,
21.4 MHz,
45 MHz,
55 MHz,
70 MHz,
90 MHz
-20°C ~ 70°C
ECS-96SMF MCF 21.4 MHzECS-96SMF MCF 21.4 MHz Datasheet
Support Docs
7.00mm x 5.00mm21.4 MHz-30°C ~ 80°C
Support Docs
7.00mm x 5.00mm21.4 MHz ~ 109.65 MHz-30°C ~ 80°C
ECS-96SMF MCF 45 MHzECS-96SMF MCF 45 MHz Datasheet
Support Docs
7.00mm x 5.00mm45 MHz-30°C ~ 80°C

The Best Monolithic Crystal Filters from the Industry Leader in Passive Components

When you purchase electronic components, like MCFs, from ECS Inc., you’ll receive a highly reliable product with long-term stability and proven effectiveness for your applications.

For the last 40 years, ECS Inc. has been the go-to source for electronic components like filters, resonators, quartz oscillators and other timing solutions. Dedicated to quality and durability, customers trust ECS Inc. to always deliver exceptional products that fit project requirements. This, combined with a team of expert engineers, makes ECS Inc. your most trustworthy source of components.

Electronic Component Solutions to Fit Your Design

Get in touch with a sales representative if you need more information about ECS Inc. MCF filters, or have questions about a specific requirement in your design. Contact the ECS engineering team at for assistance with products, board respins and any additional questions. Browse the ECS Inc. extensive online resource library to learn more about any component.

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