Description
• 125°C maximum total temperature operation
• Low profile surface mount inductor
• 12.5mm x 12.5mm x 4.5mm shielded drum core
• Ferrite core material
• Inductance range from 0.47µH to 1000µH
• Current range from 24.4 Amps to 0.44 Amps
• Frequency range up to 1MHz
Applications
• Notebook power, LCD panels
• Computer, DVD players, and portable power devices
• DC-DC converters
• Buck, boost, forward, and resonant converters
• Noise filtering and filter chokes
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(range is application specific)
• Solder reflow temperature: +260°C max. for 10 seconds
maximum
Packaging
• Supplied in tape and reel packaging, 750 per reel
DR124 Series
Low Profile Power Inductors
Part Number Rated OCL (1) Irms(2) Isat (3) DCR DCR K-factor
Inductance µH±20% Amperes Amperes m
ΩΩ
@20°C m
ΩΩ
@20°C (4)
(µH) (Typical) (Maximum)
DR124-R47-R 0.47 0.42 16.0 24.40 2.2 2.7 17.51
DR124-1R0-R 1.0 0.83 13.9 18.00 3.00 3.6 12.50
DR124-1R5-R 1.5 1.37 11.1 14.00 4.75 5.7 9.73
DR124-2R2-R 2.2 2.04 9.1 11.45 5.92 7.1 7.96
DR124-3R9-R 3.9 3.80 7.0 8.40 12.50 15.0 5.84
DR124-4R7-R 4.7 4.88 6.5 7.65 13.50 16.2 5.15
DR124-6R8-R 6.8 6.10 5.6 6.47 18.06 21.7 4.61
DR124-8R2-R 8.2 7.45 5.2 6.22 21.67 26.0 4.17
DR124-100-R 10 8.94 4.5 5.80 23.33 28.0 3.81
DR124-120-R 12 11.5 4.1 4.96 31.67 38.0 3.50
DR124-150-R 15 14.2 3.6 4.62 37.30 44.8 3.02
DR124-180-R 18 16.2 3.4 4.32 46.97 56.4 2.82
DR124-220-R 22 20.7 3.2 3.83 53.99 64.8 2.50
DR124-270-R 27 25.7 2.8 3.44 66.67 80.0 2.24
DR124-330-R 33 31.2 2.6 3.12 80.83 97.0 2.04
DR124-390-R 39 37.3 2.3 2.85 110.00 132.0 1.86
DR124-470-R 47 44.0 2.2 2.63 124.66 149.6 1.72
DR124-560-R 56 54.9 2.0 2.35 144.32 173.2 1.54
DR124-680-R 68 67.1 1.8 2.13 183.33 220.0 1.39
DR124-820-R 82 80.5 1.7 1.94 212.72 255.3 1.27
DR124-101-R 100 95.1 1.5 1.79 256.67 308.0 1.17
DR124-121-R 120 111 1.3 1.65 311.18 373.4 1.08
DR124-151-R 150 146 1.3 1.44 371.02 445.2 0.94
DR124-181-R 180 179 1.1 1.30 501.66 602.0 0.87
DR124-221-R 220 216 1.0 1.15 558.00 669.6 0.77
DR124-271-R 270 256 0.88 1.09 725.00 870.0 0.71
DR124-331-R 330 327 0.83 0.92 825.00 990.0 0.63
DR124-471-R 470 460 0.68 0.74 1242.50 1491.0 0.53
DR124-681-R 680 669 0.56 0.65 1845.83 2215.0 0.45
DR124-821-R 820 825 0.53 0.62 2109.17 2351.0 0.40
DR124-102-R 1000 998 0.44 0.53 2898.00 3477.00 0.37
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V, 0.0Adc.
(2) Irms: DC current for an approximate ³T of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 125°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 25% rolloff (@25°C)
(4) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L*³I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
³I (Peak to peak ripple current in Amps).
(5) Part Number Definition: DR124-xxx-R
DR124 = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
