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Timing Devices FAQ

Timing Devices FAQ

Ceramic Resonators (CERALOCK)
Crystal Units

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Ceramic Resonators (CERALOCK)

Q Please explain the difference between automotive grade CERALOCK and consumer grade.
Q Is there a limit to input voltage and signal?
Q Please explain “the oscillation start up time” of CERALOCK.
Q Is it necessary to consider drive level for CERALOCK?
Q What are the meanings of the Marking?
Q Does CERALOCK have orientation?
Q Is there any problem if CERALOCK is mounted in opposite direction?
Q Why does frequency correlation occur when CERALOCK is mounted in opposite direction?

Q Please explain the role of each component of the oscillation circuit.
Q Is there anything I should consider when designing circuit trace pattern of oscillating circuit?
Q Which type of capacitor should be used as a loading capacitor in an oscillation circuit?
Q Please explain possible causes of abnormal oscillation, and appropriate countermeasures.
Q Please explain possible causes of oscillation stop, and appropriate countermeasures.
Q Please explain noise-suppressing measures.
Q Please explain the IC type that may frequently develop abnormal oscillation, and the cause of abnormal oscillation.
Q What is "Curie point"?
Q What is "spurious oscillation"?
Q Please explain abnormal oscillations other than spurious oscillation, and their check method.

Q Does CERALOCK have orientation?
Q Is there any problem if CERALOCK is mounted in opposite direction?
Q Why does frequency correlation occur when CERALOCK is mounted in opposite direction?
Q Is there a recommended re-flow condition about SMD type CERALOCK?
Q Is there a recommended flow condition about lead type CERALOCK?
Q Is there anything I should consider when designing circuit trace pattern of oscillating circuit?

Q Under what conditions should CERALOCK be stored?
Q Please explain expire date (Shelf life) of the products.
Q Is the baking processing necessary for SMD CERALOCK?

Q Are there any points to be aware of when using CERALOCK?
Q Are there any points to be awere of when we take CERALOCK off PCB for failuer analsys of CERALOCK?
Q Are there any points to be awere of in ultrasonic cleaning of CERALOCK?
Q Can a lead type CERALOCK be exposed to a liquid?
Q What are the risks when external stress is applied to a lead type CERALOCK?

Q Are they compliant with EU RoHS directive?
Q Are they compliant with REACH Regulation?

Q Application of Murata Timing Devices
Q Where is the country of origin ?

Crystal Units

Q What factor in a oscillation circuit will be a cause of module malfunction?
Q Please let me know a cause and measures for oscillation stop.
Q Please let me know a cause and measures for oscillation frequency difference.
Q If small oscillation amplitude will be a cause of trouble in oscillation circuit?
Q It seems that oscillation frequency drift by temperature is not normal. What is a cause?
Q Can I apply conformal coating or washing?

Q Can I apply conformal coating or washing?

Q Are they compliant with EU RoHS directive?
Q Are they compliant with REACH Regulation?

Q Application of Murata Timing Devices
Q Where is the country of origin ?

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