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Tight tolerance ceramic resonators suit automotive apps

Posted: 15 Sep 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Murata? C series? CSTCR-G-C? CSTCE-G-C? CSTCE-V-C?

Ceramic resonators from Murata Electronics

Murata Electronics North America has released the newly redesigned C series (CSTCR-G-C, CSTCE-G-C and CSTCE-V-C) tight tolerance ceramic resonators for the automotive market. Suitable for Controller Area Network (CAN) bus or any automotive network bus that requires tight tolerance, these devices offer a smaller and less expensive option to quartz crystal resonators.

The compact C series resonators measure 4.5-by-2-by-1.2mm (CSTCR-G-C), 3.2-by-1.3-by-0.8mm (CSTCE-G-C) and 3.2-by-1.3 x1mm (CSTCE-V-C). These devices offer a frequency range of 4MHz to 20MHz and include improvements in temperature characteristics and initial tolerance capabilities.

The resonators offer an initial tolerance of 0.1 percent, temperature tolerance (-40C to 125C) of 0.13 percent and aging tolerance of 0.07 percent. The aging tolerance is based on 1,000hrs at 85C that simulates 10yrs of aging. In addition, the aging tolerance includes the frequency shift caused by two times Pb-free reflow soldering to meet the total tolerance required by the customer. The total tolerance (initial + temperature + aging) available is 0.3 percent or 3,000ppm.

Resonators are used in timing for CAN bus systems and are found in electronics modules such as airbag controls, engine controls and body controls.

The product sample prices per piece (3,000 a reel) are as follows:

  • CSTCR-G-C (4.00 to 7.99MHz) at 25 cents

  • CSTCE-G-C (8.00 to 13.99MHz) at 25 cents

  • CSTCE-V-C (14.00 to 20.00MHz) at 30 cents

Delivery is approximately 8 to 10 weeks.

- Gina Roos
eeProductCenter




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