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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/

3

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

BLM21BD221SN1

1

10

100

1000

3000

Frequency (MHz)

480

80

160

240

320

400

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BD331SN1

1

10

100

1000

3000

Frequency (MHz)

800

600

400

200

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BD421SN1

1

10

100

1000

3000

Frequency (MHz)

800

200

400

600

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BD471SN1

1

10

100

1000

3000

Frequency (MHz)

900

150

300

450

600

750

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BD601SN1

1

10

100

1000

3000

Frequency (MHz)

1200

200

400

600

800

1000

0

R

X

Z

c Impedance-Frequency Characteristics

BLM21BD751SN1

1

10

100

1000

3000

Frequency (MHz)

1500

1200

900

300

600

0

R

X

Z

Continued on the following page.