CM309E4000000BHNT

Series:	CM309E
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	4MHz
Frequency Stability:	±100ppm
Frequency Tolerance:	±50ppm
Load Capacitance:	30pF
ESR (Equivalent Series Resistance):	150 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SOJ, 9.60mm pitch
Size / Dimension:	0.461" L x 0.157" W (11.70mm x 4.00mm)
Height - Seated (Max):	0.146" (3.70mm)

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• Introduction

CM309E4000000BHNT is a type of quartz crystal or ceramic resonator which is commonly used in consumer electronics, telecommunications and automotive industries. This type of crystal is most commonly used in crystals oscillators, amplitude control filters and voltage references. This crystal is also an excellent choice for high frequency applications as it offers low jitter and low aging characteristics.

• Application Field

The CM309E4000000BHNT crystal can be used in many types of applications such as mobile phones, set-top boxes, DSL modems, bluetooth devices, Wi-Fi routers, satellite navigation systems and automotive navigation systems. Moreover, it is well-suited for use in analog and digital frequency synthesizer. This crystal can also be used in radio frequency communication equipment.

• Working Principle

The CM309E4000000BHNT is a quartz resonator or ceramic resonator which is a type of oscillator. It works on the principle of resonance, where a device resonates or vibrates at a specific frequency when supplied with an electrical current. It works by generating clocking signals with a frequency accuracy of around +/-50 ppm. A quartz resonator consists of two thin plates of quartz crystal which has been cut and polished to a high accuracy. When an alternating electrical current is supplied to them, they vibrate and generate a specific frequency. The frequency generated depends on the specific optical and acoustic properties of the quartz crystal being used. The CM309E4000000BHNT crystal provides excellent frequency stability over temperature as it is made from high quality quartz materials. Additionally, its temperature coefficient is typically in the range of +/-100-150ppm.

• Advantages And Disadvantages

The main advantage of using the CM309E4000000BHNT crystal is that it provides very accurate frequency stability and low jitter characteristics. Its frequency accuracy and temperature coefficient make it well-suited for applications such as mobile phones, wireless communications and satellite navigation systems. Additionally, its small size makes it ideal for use in small space applications. However, its analog characteristics are not as good as more expensive alternatives such as temperature compensating filters and voltage references. Additionally, aging can cause its frequency accuracy to degrade over time.

• Conclusion

In conclusion, the CM309E4000000BHNT crystal is a highly accurate and reliable crystal. It is suitable for use in a variety of applications where high frequency stability and low jitter characteristics are required. Its small size makes it ideal for use in space-constrained applications. Although it does have some downsides such as aging, it is still an excellent choice for many applications.

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