Chip Coils

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O05E.pdf
08.9.2
Chip Coils for Choke Monolithic Type
LQM21F_80 Series (0805 Size)
■ Features
1. Low DC resistance is realized.
LQM21F_80 series reduces about 50% DC resistance
in comparison with LQM21F_70 series.
2. Small size in 2.0x1.25mm and large rated current
of 120mA (4.7 micro H).
3. Magnetically shielded structure
4. Applicable soldering methods are both flow
soldering and reflow soldering.
■ Dimensions
0.5±0.3
2.0±0.2
1.25±0.2
1.25±0.2
Electrode
■ Applications
Choke circuits in DC power line of compact mobile
equipment such as mobile phones, DSC, DVC.
(in mm)
■ Rated Value (p: packaging code)
Part Number Inductance Test Frequency Rated Current DC Resistance Self Resonance Frequency (min.)
LQM21FN4R7M80p 4.7µH±20% 1MHz 120mA 0.18ohm±30% 25MHz
LQM21FN100M80p 10µH±20% 1MHz 100mA 0.30ohm±30% 15MHz
Operating Temperature Range: -55°C to +125°C
■ Impedance - Frequency Characteristics
■ Inductance - Current Characteristics
10000
10µH
100
Impedance (Ω)
1000
100
4.7µH
Inductance (µH)
10
1
10µH
4.7µH
10
10
1
1 10 100 1000
Frequency (MHz)
0.1
1 10 100 1000
DC Current (mA)
83