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Feed Through Capacitors

2499-003-X5W0-502PLF application field and working principle

A Feed Through Capacitor, also known as an FTTC, is used to reduce radio frequency interference (RFI) from high-frequency radio waves, and to protect sensitive electric circuits. It is an effective method of reducing interference between radio transmitters and receivers. The 2499-003-X5W0-502PLF capacitors are high-frequency capacitors with a low internal impedance that is easy to install and is widely used in various fields.

Application Field

Because the FTTCs have a low internal impedance, they can effectively reduce the interference generated by high-frequency radio waves. Therefore, they are widely used in radio communication in the air defense and military field, such as radar systems and in professional audio sound systems. They can also be used in various fields, such as the medical field, communication systems and industrial controllers, to reduce RFI and eliminate crosstalk between cables.

Working Principle

The basic principle of the FTTC is to use a capacitor to separate the high frequency current from the low frequency current. When passing through a capacitor, the high frequency current is partially blocked, and the low frequency current passes without resistance. The capacitor of the 2499 Series has a capacitance range between 227pF and 390pF, which can effectively block the high frequency current in the signal and prevent RFI generated by the signal, thus improving the signal-to-noise (SNR) ratio.

The impedance of the capacitor is also very important, since it determines how much current can be blocked. The impedance of the 2499 Series capacitor is very low, which is only about 0.1Ω, which is the best impedance for blocking high frequency current. In addition, this series of capacitors are equipped with a special flame-retardant material for its insulation, which can effectively prevent short circuits caused by RFI.

Conclusion

In conclusion, the FTTCs are high frequency capacitors with a low internal impedance that can effectively reduce RFI and eliminate crosstalk between cables. The 2499-003-X5W0-502PLF capacitors are used in various fields including the air defense and military field, the medical field, and the industrial controllers. They are equipped with a special flame-retardant material for insulation and have an impedance of about 0.1Ω, which make them one of the best choices for blocking high frequency current.

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