Our "LFB30" series chip type LC EMI filter is an extremely efficient EMI filter made of a combination of both dielectric and magnetic materials. They have steep insertion loss characteristic,and high current rating (~1A) makes it well suited for reducing EMI noise on DC power lines.

■ Features

 Monolithic construction of dielectric and magnetic materials
 Steep insertion loss characteristics
 Removes noise over a wide range
 Easy to place since there is no polarity
 High current rating (~1A) makes it well suited for reducing EMI noise on DC power lines.

■ Applications

Noise reduction of DC power lines for computers, computer peripheral equipment, digital TV, cellular telephone, etc.

■ Part number system

■ Dimensions(mm)

■ Equivalent circuits



■ Part number list

Part number

Cut-off
frequency

Cut-off frequency
tolerance

Rated
voltage

Rated
current

Insulation
Resistance

Operating Temp.
range

LFB30-3A1E223M

22MHz

±20%

25V

1000mA

10MΩmin

-25°C+85°C

LFB30-3A1E473M

47MHz

LFB30-3A1E104M

100MHz


: "T" stands for taping package and "B" stands for bulk package.

Insertion loss (Reference)

■ Test circuit