1202F-005

EMI/RFI Filters (LC, RC Networks) are widely used in electronic devices, such in this case the 1202F-005. This device was designed to deal with unwanted noise emission and electromagnetic interference in different applications. It works as a suppression system, with different components working in different ways in order to eliminate radio-frequency signals.

The 1202F-005 is a low cost wide-band inductor-capacitor (LC) filter. This type of filter is mainly used for low-output radio-frequency (RF) signal applications, up to about 10 MHz. The components that make this filter work are two inductors connected in series to a capacitor, placed between the input and output pins of the device. The capacitors are polarized and must be connected with the proper polarity or the device may not work. In this filter, the inductors and capacitor provide impedance which acts as a filter, attenuating the higher frequencies to reduce noise.

The components of the 1202F-005 provide the inductance that is necessary in order to maintain a low, wide-band resonance. This is one of the main characteristics of the device, as it allows the filter to eliminate noise signals from a wide range of frequencies. In order to ensure that the device works properly, it is important to connect the capacitors in the correct polarity, to avoid any potential damage from over current or heat due to incorrect connections.

Apart from the LC filter, the 1202F-005 also allows the use of a resistor-capacitor (RC) network. This type of filter is used when dealing with higher frequencies, operating up to 80 MHz. The RC filter consists of a resistor and a capacitor, which are connected in series. When used together, they provide some attenuation or noise reduction. The resistor provides an electrical load to the input signal and the capacitor, which acts like an open circuit at higher frequencies, maintains the resonance at lower frequencies, reducing the amount of noise. As with the LC filter, it is important to correctly connect the components in the filter in order to ensure proper operation.

In conclusion, the 1202F-005 is a low-cost wide-band filter designed to reduce noise emitted in different applications. It is composed of an LC filter, mainly used for low-output RF applications up to 10 MHz, and an RC filter, suitable for up to 80 MHz. It is important to correctly connect the components according to the manufacturer’s instructions in order to keep the device working properly.