BLM18BA220SH1D Murata, BLM18BA220SH1D Datasheet - Page 45

• Manufacturer Part Number: BLM18BA220SH1D
• Description: EMI/RFI Suppressors & Ferrites 0603 22ohms HiSpeed Signal Line Tape
• Manufacturer: Murata
• Series: BLM Br

Specifications of BLM18BA220SH1D

• Shielding: Unshielded
• Test Frequency: 100 MHz
• Product: Chip Ferrite Beads
• Impedance: 22 Ohms
• Tolerance: 25 %
• Maximum Dc Current: 500 mAmps
• Maximum Dc Resistance: 0.35 Ohms
• Operating Temperature Range: - 55 C to + 125 C
• Package / Case: 0603 (1608 metric)
• Termination Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

!Note
10. Expressing EMI Suppression Filter Effects
!Note
44
Noise Suppression Principles by DC EMIFILr
EMI Suppression Filter effects are expressed in terms of
the insertion loss measured in the circuit, normally
specified in MIL-STD 220A. As shown in the 50
impedance circuit in the Figure at right, insertion loss is
represented by the logarithmic ratio of the circuit output
voltage with and without a filter in the circuit, which is
multiplied by 20 and expressed in dB.
Therefore, an insertion loss of 20dB indicates an output
voltage ratio (B/C) of 1/10, and an insertion loss of 40dB
indicates an output voltage ratio (B/C) of 1/100.
Continued from the preceding page.
• 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 approve our product specifications or transact the approval sheet for product specifications before ordering.
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.
[Measuring Circuit of Insertion Loss]
(a)
(b)
Measuring Circuit of Insertion Loss
Insertion Loss = 20 log B (dB)
A(V)
A(V)
50
50
Suppression
Filter
EMI
C
B(V)
C(V)
C50E.pdf 05.1.28
50
50