FN402B-6.5-02

Series:	FN 402
Part Status:	Active
Filter Type:	Single Phase
Configuration:	Single Stage
Voltage - Rated DC:	--
Voltage - Rated AC:	250V
Current:	6.5A
Frequency - Operating:	DC ~ 400Hz
Applications:	General Purpose
Approvals:	CSA, ENEC, UR
Operating Temperature:	-25°C ~ 100°C
Mounting Type:	Through Hole
Termination Style:	PC Pins
Inductance:	1mH

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Power Line Filter Modules

Filters are important components used in power lines for reducing noise. Different types of filters are available for different applications. Among them, one of the most popular is the FN402B-6.5-02 power line filter module. This filter is suitable for the application of electrical noise suppression in switching power sources, electronic equipment, inverters, smart home appliances and industrial equipment. The FN402B-6.5-02 module has three stages - inductor, capacitor and varistor. The module’s inductor acts as a low-impedance path to ground for high frequency noise, while the capacitor prevents the flow of low-frequency noise. The varistor, meanwhile, is used for suppressing voltage transients and providing instantaneous current protection. Together, these three different components are able to filter out both high and low frequency noise. In terms of power ratings, the filter module has a rated current of 6.5A. It also has a rated voltage of 250V AC/DC and an insulation voltage of 3KV RMS. In addition, the filter module has a temperature range of -25°C to +85°C and a leakage current of 0.1mA. The filter module also has a creepage distance of 8mm with a minimum clearance of 4mm, a voltage coefficient of 10% maximum and capacitance values of 1.0μF and 0.47μF. In terms of working principle, the filter consists of three components – an inductor, a capacitor and a varistor. When a current passes through the filter, it experiences a split of current between the three components due to their different electrical properties. The inductor and capacitor form a low pass filter which passes frequencies below its cut-off frequency, whereas the varistor forms a high pass filter which passes only frequencies above its cut-off frequency. This helps to filter out high and low frequency noises from the power line.To ensure proper performance of the filter module, certain conditions must be met. The filter module should be mounted in a horizontal position with the component side up and the opening away from the power source or output. The world’s leading manufacturers also advise users to use an insulating plate with a thickness of over 1.0mm and minimum creepage distance of 8mm to reduce the risk of electric shocks. The filter module should also be installed away from heat sources, moisture and mechanical vibrators. In summary, FN402B-6.5-02 power line filter module is an effective noise suppression solution for switching power sources, electronic equipment, inverters, smart home appliances and industrial equipment. It provides a high rated current of 6.5A, along with a temperature range of -25°C to +85°C and rated voltage of 250V AC/DC. The three components of this filter module – an inductor, a capacitor and a varistor – help to filter out both high and low frequencies from the power line. The filter module should be mounted horizontally, away from heat sources, moisture and mechanical vibrators for proper performance of the filter.

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