BLM18EG121SN1-D Murata, BLM18EG121SN1-D Datasheet - Page 5

• Manufacturer Part Number: BLM18EG121SN1-D
• Description: CHIP FERRITE BEAD, 0603, 2A
• Manufacturer: Murata
• Series: BLM18EGr

Specifications of BLM18EG121SN1-D

• Impedance: 120ohm
• Dc Resistance Max: 0.04ohm
• Dc Current Rating: 2A
• Ferrite Mounting: SMD
• Ferrite Case Style: 0603
• No. Of Pins: 2
• Frequency Range: 100MHz To 1GHz

oAdvantages to Use Common Mode Choke Coils
!Note
1. Great Effect for Common Mode Noise
2. Possible to Suppress Noise with Less Affect of Ultra High Speed Signal
3. Less Magnetic Saturation by Current
Differential mode inductors work as a half
impedance for common mode noise.
Common Mode Choke Coils are effective for
common mode noise.
Common Mode Choke Coils can suppress Noise with less affect of Signal,
even if the frequency range of Signal and Noise are same, because of they
separate each conductive mode of current.
Common Mode Choke Coils are effective for noise suppression of DC
power lines, due to their less magnetic saturation at high power current,
that comes from their construction of cancelling magnetic flux of
differential mode current at each coils.
• 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.
(Differential mode)
Signal spectrum
(Common mode)
Noise spectrum
Frequency
Used differential mode
inductor
Used Common Mode
Choke Coil
Stray
capacitance
Noise source
N
Ex) 2pcs of differential mode inductor
Selection Guide for Noise Suppression Filter
Selection Guide for Noise Suppression Filter
Reference ground surface
~
Frequency
Frequency
Z
Z
Signal is attenuated
with Noise suppression
Noise is suppressed
without less affect of
Signal
Stray
capacitance
3
Mar.28,2011
C31E.pdf