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Data Sheet

!Note:

1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it

may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.

2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product

specifications or transact the approval sheet for product specifications before ordering.

http://www.murata.com/

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Noise Suppression Products/EMI Suppression Filters > AC Line Filters > Hybrid Choke Coils

2012.7.5

Continued from the preceding page.

c Equivalent Circuit

Common Mode Inductor

Differential Mode Inductor

(1)

(2)

(3)

(4)

No polarity.

c Packaging

Code

Packaging

Minimum Quantity

M

Magazine

1800

B

Box

1200

c !Caution (Rating)

1. Rated Current

Operating current should not exceed the rated

value. Even if operating current is under the

rated value, adequate ventilation is required to

avoid excessive heat generated within the product

(choke coil) and from surrounding heat sources.

If exceeding these conditions, excessive heat may

cause fumes or permanent damage to the product.

Please ensure that product (choke coil) is

evaluated and confirmed against the specification

when it is mounted in your final assembled product.

-> Winding temperature should be less than

120 degree C.

*As for FKOB series winding temperature should be

less than 95 degree C.

Maximum allowable temperature at the surface of

coil (ambient temperature + winding temperature

rise) is in accordance with each safety standard

applicable to final assembled product.

When the temperature at winding exceeds maximum

allowable temperature of safety standard, the

rated current should be derated.

2. Inrush Current

Inrush current should not exceed 10 times rated

current within 1/4 cycle of 50/60Hz commercial

power line. Inrush current should be limited to a

minimum of 10 seconds after last inrush.

If these conditions are exceeded, excessive heat may

cause fumes or permanent damage to the component,

or at worst cause ignition.

c Notice (Soldering and Mounting)

Magnetic Flux Leakage

Choke coils generate small amounts of magnetic flux

leakage that may adversely affect equipment operation

according to component arrangement.

Testing should be completed on final assembly to

ensure equipment performance is not affected.

c Notice (Other)

Coil Humming Noise

Magnetic flux generated between coil and core or

between the choke coil windings creates repulsive

power between the coil windings. This repulsive

power causes the coil winding to vibrate and create

a humming noise. The amount of hum produced by the

coil is proportionate to the amount of harmonic

distortion generated by the operating current. This

does not influence the electrical performance of

the coils, but it should be considered and tested

in actual circuit application.