6

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/

6

Noise Suppression Products/EMI Suppression Filters > EMIFIL

r (Inductor type) > Chip Ferrite Bead

2011.11.2

oThis data sheet is applied for CHIP FERRITE BEAD used for General Electronics equipment for your design.

Continued from the preceding page.

c Impedance-Frequency Characteristics

BLM21BB221SN1

1

10

100

1000

3000

Frequency (MHz)

800

200

400

600

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BB331SN1

1

10

100

1000

3000

Frequency (MHz)

1200

900

600

300

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BB471SN1

1

10

100

1000

3000

Frequency (MHz)

2000

1500

1000

500

0

R

X

Z

c !Caution/Notice

!Caution (Rating)

Do not use products beyond the rated current as

this may create excessive heat and deteriorate

the insulation resistance.

Notice

Solderability of Tin plating termination chip might be

deteriorated when low temperature soldering profile

where peak solder temperature is below the Tin melting

point is used. Please confirm the solderability of Tin

plating termination chip before use.