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• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
!Note
C50E.pdf
sales representatives or product engineers before ordering.
• 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 ordering0. 7.2.22
• This PDF 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.
1
BLM21P Series
0.5±0.2
■ Features
The chip ferrite beads BLM series is designed to
function nearly as a resistor at noise frequencies,
which greatly reduces the possibility of resonance and
leaves signal wave forms undistorted.
BLM series is effective in circuits without stable
ground lines because BLM series does not need a
connection to ground.
2.0±0.2
1.25±0.2
EIA CODE : 0805
The nickel barrier structure of the external
electrodes provides excellent solder heat resistance.
BLM_P series can be used in high current circuits due
to its low DC resistance.
(in mm)
Impedance
Operating
Temperature Range
(°C)
Rated Current
(mA)
DC Resistance (max.)
(ohm)
Part Number
(at 100MHz/20°C)
(ohm)
BLM21PG220SH1
BLM21PG300SH1
BLM21PG600SH1
BLM21PG221SH1
BLM21PG331SH1
22 ±25%
30 (Typ.)
60 ±25%
220 ±25%
330 ±25%
6000
3000
3000
2000
1500
0.01
0.015
0.025
0.050
0.09
-55 to +125
-55 to +125
-55 to +125
-55 to +125
-55 to +125
At rated current higher than 1500mA, derating is required.
Please refer to p.29, "Derating of Rated Current".
■ Equivalent Circuit
■ Impedance - Frequency (Typical)
600
450
300
BLM21PG331SH1
BLM21PG221SH1
BLM21PG600SH1
BLM21PG300SH1
BLM21PG220SH1
(Resistance element becomes dominant
at high frequencies.)
150
0
1
10
100
Frequency (MHz)
1000
■ Impedance - Frequency Characteristics
BLM21PG220SH1
BLM21PG300SH1
40
60
30
45
30
Z
Z
R
20
R
X
10
X
15
0
0
1
10
100
Frequency (MHz)
1000
1
10
100
Frequency (MHz)
1000
Continued on the following page.
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