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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/

2

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 Derating of Rated Current

In operating temperature exceeding +85°C,

derating of current is necessary for

BLM21PG series.

Please apply the derating curve shown in

chart according to the operating

temperature.

Derating of Rated Current

Operating Temperature (°C)

85

0

125

0

1000

2000

3000

1500

6000

4000

3500

c Impedance-Frequency Characteristics (Main Items)

Frequency (MHz)

1

10

100

1000

3000

500

400

300

100

200

0

BLM21PG220SN1

BLM21PG300SN1

BLM21PG600SN1

BLM21PG221SN1

BLM21PG331SN1

BLM21PG121SN1

c Impedance-Frequency Characteristics

BLM21PG220SN1

1

10

100

1000

3000

Frequency (MHz)

30

20

10

0

Z

R

X

40

Continued on the following page.