Datasheet

!Note
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please review our product specifications or consult the approval sheet for product specifications before ordering.
C31E.pdf
Mar.28,2011
Chip Ferrite BeadChip EMIFILr
Chip Common Mode Choke Coil
Block Type EMIFILr
Signal Lines Type
72
For digital I/F. Reduce the distortion of waveform created by resonance.
BLM21RSeries (0805 Size)
BLM Series Signal Lines Type Chip Ferrite Bead
■ Dimensions ■ Equivalent Circuit
■ Packaging
■ Impedance-Frequency Characteristics (Main Items)
■ Rated Value (p: packaging code)
■ Impedance-Frequency Characteristics
BLM21RK121SN1 BLM21RK221SN1 BLM21RK471SN1
Continued on the following page.
Refer to pages from p.91 to p.94 for mounting information.
BLM21R
Code Packaging
Minimum
Quantity
D 180mm Reel Paper Tape 4000
J 330mm Reel Paper Tape 10000
B Bulk(Bag) 1000
Part Number
Impedance
(at 100MHz/20°C)
Rated Current
DC Resistance
Operating
Temperature Range
BLM21RK121SN1p 120ohm±25% 200mA 0.15ohm max. -55°C to +125°C
BLM21RK221SN1p 220ohm±25% 200mA 0.20ohm max. -55°C to +125°C
BLM21RK471SN1p 470ohm±25% 200mA 0.25ohm max. -55°C to +125°C
BLM21RK601SN1p 600ohm±25% 200mA 0.30ohm max. -55°C to +125°C
BLM21RK102SN1p 1000ohm±25% 200mA 0.50ohm max. -55°C to +125°C
Number of Circuits: 1
2.0±0.2
0.5±0.2
1.25±0.2
EIA CODE : 0805
0.85±0.2
(in mm)
: Electrode
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
200
150
100
50
0
Z
R
X
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
300
225
150
75
0
Z
R
X
1 10 100 1000 3000
Frequency (MHz)
Impedance (Ω)
600
450
300
150
0
X
Z
R
Impedance (Ω)
Frequency (MHz)
1 10 100 1000 3000
1200
900
600
300
0
BLM21RK601SN1
BLM21RK471SN1
BLM21RK121SN1
BLM21RK102SN1
BLM21RK221SN1
(Resistance element becomes dominant
at high frequencies.)