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• This catalog 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.

On-Board Type (DC) EMI Suppression Filters (EMIFILr)

Chip Ferrite Beads BLM03/BLM15/BLM18/BLM21/BLM31/BLM41 Series

s Features (BLM_A Series)

The chip ferrite bead BLM series comprises ferrite

beads in the shape of a chip. This ferrite bead

generates a high impedance which at high frequency

mainly consists of a resistance element. The BLM

series is effective in circuits without stable ground

lines because the BLM series does not need a

connection to ground.

The nickel barrier structure of the external

electrodes provides excellent solder heat resistance.

BLM_A series generates an impedance from the

relatively low frequencies. Therefore BLM_A series is

effective in noise suppression in a wide frequency

range (30MHz - several hundred MHz).

The small size of BLM03 series (0.6x0.3mm) is

suitable for noise suppression in small equipment such

as PA modules for cellular phones.

s Equivalent Circuit

(Resistance element becomes dominant

at high frequencies.)

BLM03A Series (0201 Size)

(in mm)

0.6

±0.03

0.3

±0.03

0.15

±0.05

: electrode

Part Number

Impedance

(at 100MHz/20

°C)

(ohm)

Rated Current

(mA)

DC Resistance (max.)

(ohm)

Operating

Temperature Range

(

°C)

BLM03AG100SN1

10 (Typ.)

500

0.1

-55 to +125

BLM03AG700SN1

70 (Typ.)

200

0.5

-55 to +125

BLM03AG121SN1

120

±25%

200

0.8

-55 to +125

BLM03AG241SN1

240

±25%

100

1.0

-55 to +125

Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.

This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.

!Note

C31E12.pdf 04.8.30