SURFACE MOUNT EMI FILTERS
CHIP FERRITE BEADS
BLM
P Series
The BLMP Series ferrite beads offer high frequency noise
suppression with the capability of handling large currents for
DC power line applications.
FEATURES
I
Suitable high frequency noise suppression over wide
frequency range
I
Current rating up to 6 AMPS
I
Small package size – EIA STD 0603/0805/1206 and 1806
I
Nickel barrier terminations provide excellent solder
heat resistance
I
Low DCR
APPLICATIONS
I
High current DC power lines
I
Circuits where a stable ground is unavailable
PART NUMBERING SYSTEM
BLM
CHIP FERRITE SERIES
21
P
POWER
P: Power
220
SG
PT
CHARACTERISTICS
PACKAGING
PB: Bulk
PT: Tape 7” Reel
PT1: 13” Reel
SIZE
11: 1.6 x 0.8mm
21: 2.0 x 1.25mm
31: 3.2 x 1.6mm
41: 4.5 x 1.6mm
IMPEDANCE CODE
at 100MHz
300: 30 ohms
750: 75 ohms
SPECIFICATIONS
Dimensions: mm
0.8 ± 0.15
Part Number
BLM11P300S
BLM11P600S
BLM21P220SG
Impedance
(Ohms)
Typ. at 100MHz
30
60
22
30
60
220
330
33
50
120
390
600
60
75
80
180
470
1000
Rated Current
(mA)
1000
500
6000*
3000*
2000*
1500*
6000*
3000*
2000*
1500*
6000*
3000*
1000*
3000*
2000*
1500*
DCR
(Ohms max.)
0.06
0.10
Operating
Temperature
Range
0603
0.4 ± 0.2
1.6 ± 0.15
0.8 ± 0.15
0805
0.5 ± 0.2
0.85 ± 0.2
2.0 ± 0.2
1.25 ± 0.2
BLM21P300S
BLM21P600SG
BLM21P221SG
BLM21P331SG
BLM31P330SG
0.025
0.05
0.09
0.025
0.05
0.09
0.01
0.025
0.10
0.025
0.015
0.09
*See Derating Curve.
1206
0.7 ± 0.3
1.6 ± 0.2
BLM31P500S
BLM31P121SG
BLM31P391SG
BLM31P601SG
BLM41P600S
BLM41P750S
BLM41P800S
BLM41P181SG
BLM41P471SG
BLM41P102SG
–55°C
~
+125°C*
1.1 ± 0.2
3.2 ± 0.2
1806
0.7 ± 0.3
1.6 ± 0.2
4.5 ± 0.2
1.6 ± 0.2
Available as standard through authorized Murata Electronics Distributors.
DERATING CURVE
6
Rated Current (A)
5
4
3
2
1.5
1
0
BLM21P220SG
BLM31P330SG
BLM41P600S
BLM21P300S
BLM21P600SG
BLM31P500S
BLM31P121SG
BLM41P750S
BLM41P181SG
BLM31P391SG
BLM21P221SG
BLM31P601SG
BLM41P800S
85
125
Operating Temperature (°C)
172
CG01-J
MCU
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