PSM1-402Z-02B

Current:	2A
Height:	0.118" (3.00mm)
Size / Dimension:	0.315" L x 0.118" W (8.00mm x 3.00mm)
Package / Case:	3-PSM
Mounting Type:	Surface Mount
Voltage - Rated:	--
Applications:	Data Lines for Mobile Devices
Operating Temperature:	-55°C ~ 125°C
ESD Protection:	No
Values:	C = 4000pF
Series:	PSM
Resistance - Channel (Ohms):	--
Attenuation Value:	--
Center / Cutoff Frequency:	--
Number of Channels:	1
Technology:	LC (Pi)
Filter Order:	3rd
Type:	Low Pass
Part Status:	Discontinued at Digi-Key
Packaging:	Bulk

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EMI/RFI Filters (LC, RC Networks)

Electromagnetic interference (EMI) and radio-frequency interference (RFI) filters are components that reduce the level of radio waves that interfere with electronic devices. The PSM1-402Z-02B is an example of a high performance, shielded filter that is designed to meet the stringent needs of the military, aerospace, medical and industrial electronics markets.

Application Field

The PSM1-402Z-02B typically finds use in high power applications such as industrial motors, military aircraft, medical equipment and high voltage switching systems. These applications require a device able to reduce the level of experienced interference and protect sensitive electronic components from damage.The filter is specifically designed for use in applications where the operating environment is challenging, as it is capable of operating in extreme temperatures and corrosive environments. Additionally, the filter design offers an extremely high insertion loss, thereby reducing the unwanted radio-activity associated with the supply line.

Working Principle

The working principle of the PSM1-402Z-02B is fairly straightforward. The filter is composed of a combination of various elements, including capacitors, ferrites and inductors. Each element is combined into a network that acts to filter out unwanted radio waves.The ferrite core is the primary element, as it acts to absorb and reduce the amount of EMI/RFI present in the supply line. This is achieved using a combination of both inductive and capacitive elements. The inductive elements absorb the radio waves, while the capacitive elements act to store and release electrons, thus dampening the waveform.The shielded enclosure further reduces the amount of EMI/RFI present, by preventing external interference from entering the circuit. The combination of elements means that the filter reaches a superior shielding effectiveness, often reaching up to 100dB.The filter has several advantages. It is lightweight, meaning that it can be installed into applications where space is at a premium. Additionally, it is highly reliable, as it is able to operate in a range of harsh environments.

Conclusion

The PSM1-402Z-02B is a high performance, shielded filter designed for use in applications where radio-frequency and electromagnetic interference is a problem. The filter is capable of operating in extreme temperatures and is lightweight and reliable. Its combination of inductive, capacitive and ferrite core elements allow for a superior shielding effectiveness, making it an ideal choice for applications that require superior filtering.

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