BLM18SG121TN1D Murata, BLM18SG121TN1D Datasheet - Page 153

• Manufacturer Part Number: BLM18SG121TN1D
• Description: EMI/RFI Suppressors & Ferrites 0603 120 OHMS
• Manufacturer: Murata

Specifications of BLM18SG121TN1D

• Shielding: Unshielded
• Test Frequency: 100 MHz
• Product: Chip Ferrite Beads
• Impedance: 120 Ohms
• Tolerance: 25 %
• Maximum Dc Current: 3000 mAmps
• Maximum Dc Resistance: 0.025 Ohms
• Operating Temperature Range: - 55 C to + 125 C
• Package / Case: 0603 (1608 metric)
• Termination Style: SMD/SMT
• Dc Resistance Max: 0.025ohm
• Dc Current Rating: 3A
• Ferrite Mounting: SMD
• Ferrite Case Style: 0603 / 1608
• Operating Temperature Min: -55°C
• Resistance: 0.025ohm
• Rohs Compliant: Yes
• Operating Temperature Max: +125°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Suppression
!Note
Video signal generator
Example
Noise
Test Example of HDMI1.3
Waveform Transmission
Skew Improve Effect of Common Mode Choke Coil
Noise Suppression of Common Mode Choke Coil in HDMI Line
~Using ESD protection device 0.05pF~
Example of Skew Improvement by Common Mode Choke Coil
(Test using pulse generator waveform)
Device under test / Transmitter : game machine Receiver : projector
Cable / HDMI categoly2 3m cable
Test resolution / 1080p Deep color 12bit (Data 1.11GHz) DVD play mode
Waveform is equivalent to 1000Mbps signal
Waveform with intentionally made skew (skew: 100ps)
Signal frequency :
• 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.
60
55
50
45
40
35
30
25
20
1000
common mode choke coil ESD protection device 0.05pF
1500
DLP/DLW Series
CLOCK
DATA
2000
1.11GHz (Deep color 12bit)
2500
Frequency (MHz)
3000
Without filter
DLW21SN900HQ2
3500
4000
4500
Skew is improved by common mode choke coil
5000
Each of common mode choke coil can keep waveform, satisfy the specification.
Cut-off Frequency
Transition Time
ESD protection device only
Judge
60
55
50
45
40
35
30
25
20
Specification satisfied
1000
DLW21SN900HQ2
Rise time: 83.4ps
Fall time: 77.4ps
Wound Type
Over 10GHz
1500
2000
(Cut-off frequency is most low in the table below)
2500
DLP11SA900HL2
Specification satisfied
Frequency (MHz)
Rise time: 90.4ps
Fall time: 85.5ps
Around 6GHz
Film Type
3000
Film Type DLP11SN900HL2
Without filter
DLP11SA900HL2
3500
Mechanism of Skew Improvement
This electromotive force works to
decrease the delay of waveform
magnetic flux on a ferrite core
Waveform rises (or falls)
Current change generates
generated on another line
4000
Electromotive force is
DLP2ADN900HL4
Specification satisfied
Rise time: 100ps
Fall time: 97.4ps
Film Type Array
Around 4GHz
4500
Specification
satisfied
5000
151
Mar.28,2011
C31E.pdf