BLM18RK221SN1D Murata, BLM18RK221SN1D Datasheet - Page 112

• Manufacturer Part Number: BLM18RK221SN1D
• Description: EMI/RFI Suppressors & Ferrites 0603 220ohms Digital Interface Tape
• Manufacturer: Murata

Specifications of BLM18RK221SN1D

• Shielding: Unshielded
• Test Frequency: 100 MHz
• Product: Chip Ferrite Beads
• Impedance: 220 Ohms
• Tolerance: 25 %
• Maximum Dc Current: 200 mAmps
• Maximum Dc Resistance: 0.3 Ohms
• Operating Temperature Range: - 55 C to + 125 C
• Package / Case: 0603 (1608 metric)
• Termination Style: SMD/SMT
• Dc Resistance Max: 0.3ohm
• Dc Current Rating: 200mA
• Ferrite Mounting: SMD
• Ferrite Case Style: 0603 / 1608
• Operating Temperature Max: +125°C
• Operating Temperature Min: -55°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2
!Note
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
• 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.
sales representatives or product engineers before ordering.
!Effect of Noise Suppression by NFR21G
NFR21G is effective even if ground line is not stable enough
due to its distributed constant circuit structure.
With Stable Ground Line
With Poor Ground Line
!Note
110
EMI Suppression Effect
Noise Suppression Effect of NFR21G Series
Filter Mounting Condition
Standard Type Chip EMIFILr
(100pF)
Filter Mounting Condition
NFR21GD4701012
Filter Mounting Condition
Standard Type Chip EMIFILr
(100pF)
Filter Mounting Condition
NFR21GD4701012
Noise Level without Filter
Noise Level without Filter
• 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.
Type of Filter
Type of Filter
60
50
40
30
20
10
60
50
40
30
20
10
60
50
40
30
20
10
60
50
40
30
20
10
60
50
40
30
20
10
60
50
40
30
20
10
30
30
30
30
30
30
EMI Suppression Effect
EMI Suppression Effect
84
84
84
84
84
84
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
138
138
138
138
138
138
192
192
192
192
192
192
246
246
246
246
246
246
300
300
300
300
300
300
Testing Circuit
10MHz
HCU04
The standard type chip EMIFILr is effective on stable
ground lines.
NFR21G has some advantages to standard type
EMIFILr on stable ground lines.
The standard type EMIFILr loses efficiency on poor
ground lines.
NFR21G is effective even on poor ground lines because
of its distributed constant circuit structure and unique
system to limit rush current.
(connection ground pattern
Filter
Filter
with ground plane)
HC04
Thru-hole
Filter
Description
Description
Ground pattern
Ground pattern
Without ground plane
Signal line
Signal line
Signal Pattern
Whole surface (back side)
ground plane
15cm
HC00
C31E.pdf
08.9.1