B85321A2105A750

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Introduction

B85321A2105A750 is a feed-through capacitors device. It is a three-terminal electrical component designed to pass an AC signal and capacitively block a DC signal. It passes through the AC signal between two inner terminals and capacitively blocks the DC signal source from reaching the outer terminal of the feed-through capacitor. Feed-through capacitors are employed in a number of unique field applications such as electrostatic discharge (ESD) protection, power line filtering, signal line coupling, dual-voltage systems, and high-voltage standoffs.

Application Field of B85321A2105A750

The major application fields of B85321A2105A750 are ESD Protection and Power Line Filtering.

ESD Protection

The ability of a B85321A2105A750 to pass an AC signal while blocking a DC signal makes it ideal for use in ESD protection applications. Feed through capacitors can be used in various ESD protection circuits to prevent electrostatic discharge (ESD) from damaging sensitive electronic devices. The B85321A2105A750 is designed with precise high-voltage assemblies, and it has an excellent low-frequency performance. It can provide highly reliable protection in less than 1 nanosecond, making it suitable for sensitive electronic devices subjected to ESD voltage.

Power Line Filtering

Another application for the B85321A2105A750 is for power line filtering. It is used between the power line and common mode chokes to block the noise and switching transients on the power line while passing the AC signal. The feed-through capacitor helps reduce noise emitted from the source, as well as block high frequency noise that may be present on the power line.

Working Principle

The B85321A2105A750 feed-through capacitor device is designed with a three-terminal construction. It is composed of a cylindrical outer casing and two internal terminals connected to the center terminal. The capacitance value is determined by the scale of the internal capacitor. The AC signal to be transferred between two inner terminals passes through the capacitors without any loss. The DC signal source is blocked at the outer terminal of the feed-through capacitor. The feed-through capacitors function by combining the capacitance of two oppositely polarized dielectric elements. The AC signal to be passed is connected between the two inner terminals of the capacitor. This signal creates an electric field on each side of the insulating barrier which results in current leakage. Since the two electric fields act to oppose each other, they cancel out and the signal passes through the capacitor without any loss. The DC signal source is connected at the outer terminal of the capacitor, which results in an electric field in one direction only on the other side of the insulation barrier. This electric field is not canceled out by the electric field from the AC signal, so the DC signal is blocked and prevented from reaching the inner terminals of the feed-through capacitor.

Conclusion

In conclusion, the B85321A2105A750 is a feed-through capacitors device that is specially designed to pass an AC signal and block the DC signal source. It has applications in ESD protection, power line filtering and other unique fields. The working principle of the B85321A2105A750 is based on combining the capacitance of two oppositely polarized dielectric elements. The AC signal passes through the capacitor without any loss while the DC signal is blocked.

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