Shape and Size : (Dimensions are in mm)
Features : Ordering Information :
．Silver Plated Type, Low cost design. SMT DR105 - 331
K
．High power, High saturation inductors. (1) (2) (3) (4)
．Ideal inductors for DC-DC conversion. (1)Type : Surface Mountable Type .
．Available on tape and reel for auto surface (2)Style : DR Core : OD=10mm, HT=5.4mm.
mounting. (3)Inductance : 331 for 330 uH.
(4)Inductance tolerance :
"M": ±20%; "L": ±15%; "K": ±10%
Inductance and rated current ranges : Characteristics :
．SMTDR32 1.0 ~ 330uH 2.2 ~ 0.12A ．Rated DC current : obtained when the inductance is
．SMTDR43 1.0 ~ 68uH 2.56 ~ 0.37A 90% more than its initial value and temperature
．SMTDR52 1.2 ~ 470uH 3.5 ~ 0.16A rise ⊿t =40℃ lower.
．SMTDR53 1.0 ~ 470uH 4.5 ~ 0.20A ．Operating temperature : -20 ℃ to 80 ℃.
．SMTDR54 10 ~ 220uH 1.44 ~ 0.35A
．SMTDR73 10 ~ 330uH 1.44 ~ 0.28A Applications :
．SMTDR75 10 ~ 470uH 2.30 ~ 0.34A ．Power supply for VTRs.
．SMTDR104 10 ~ 560uH 2.38 ~ 0.32A ．LCD televisions.
．SMTDR105 10 ~ 820uH 2.60 ~ 0.24A ．Notebook PCs.
Test equipments : ．Portable communication equipment.
L : HP4284A or HP4285A LCR meter. ．DC/DC converters,etc.
DCR tested by Milli-ohm meter.
．Electrical specifications at 25℃.
SMT POWER INDUCTORS
SMTDR 32/ 43/ 52/ 53/ 54/ 73/ 75/ 104/ 105 TYPE
6.1
DR32 DR43 DR52 DR53 DR54 DR32 DR43 DR52 DR53 DR54
1R0 1.0 0.045 0.0487 0.03 2.20 2.56 4.50
1R2 1.2 0.050 0.050 0.03 2.10 4.20 4.20
1R4 1.4 0.0562 2.52
1R5 1.5 0.055 0.060 0.03 1.70 4.00 4.10
1R8 1.8 0.070 0.0637 0.065 0.03 1.65 1.95 3.70 3.70
2R2 2.2 0.085 0.0712 0.07 0.03 1.60 1.75 3.50 3.50
2R7 2.7 0.100 0.0787 0.08 0.04 1.40 1.58 3.20 3.20
3R3 3.3 0.120 0.0862 0.10 0.05 1.04 1.44 2.70 2.80
3R9 3.9 0.125 0.0937 0.12 0.06 1.00 1.33 2.40 2.60
4R7 4.7 0.135 0.1087 0.14 0.07 1.00 1.15 2.00 2.50
5R6 5.6 0.145 0.1257 0.15 0.08 0.95 0.99 1.80 2.40
6R8 6.8 0.20 0.1312 0.16 0.09 0.95 0.95 1.50 2.20
8R2 8.2 0.25 0.1462 0.17 0.10 0.92 0.84 1.40 2.00
100 10.0 0.32 0.182 0.20 0.13 0.10 0.90 1.05 1.30 1.80 1.44
120 12.0 0.35 0.210 0.23 0.16 0.12 0.85 0.97 1.10 1.75 1.40
150 15.0 0.46 0.235 0.25 0.19 0.14 0.75 0.85 1.05 1.70 1.30
180 18 0.52 0.338 0.30 0.21 0.15 0.70 0.74 1.00 1.60 1.23
220 22 0.65 0.378 0.35 0.28 0.18 0.60 0.68 0.90 1.50 1.11
270 27 0.75 0.522 0.40 0.32 0.20 0.55 0.62 0.85 1.40 0.97
330 33 0.92 0.540 0.50 0.38 0.23 0.50 0.56 0.75 1.10 0.88
390 39 1.12 0.587 0.55 0.42 0.32 0.48 0.52 0.70 1.00 0.80
470 47 1.27 0.844 0.65 0.52 0.37 0.45 0.44 0.60 0.90 0.72
560 56 1.50 0.937 0.75 0.50 0.42 0.30 0.42 0.55 0.85 0.68
680 68 2.00 1.117 0.95 0.68 0.46 0.26 0.37 0.50 0.80 0.61
820 82 2.15 1.20 0.82 0.60 0.23 0.45 0.65 0.58
101 100 2.85 1.40 1.10 0.70 0.20 0.40 0.60 0.52
121 120 3.40 1.75 1.20 0.93 0.18 0.35 0.58 0.48
151 150 4.20 2.00 1.50 1.10 0.16 0.25 0.43 0.40
181 180 4.50 2.60 1.80 1.38 0.15 0.22 0.41 0.38
221 220 5.70 3.00 2.00 1.57 0.14 0.20 0.38 0.35
271 270 8.50 3.70 2.90 0.10 0.18 0.35
331 330 9.50 4.30 3.30 0.09 0.17 0.28
391 6.00 3.70 0.16 0.260
471 6.70 4.90 0.15 0.200
Measuring Frequency :
Tolerance of Inductance :
SMTDR32 1.0~18uH (M) ± 20%; 22~330uH (K) ± 10%. SMTDR43 1.0~27uH (M) ± 20%; 33~68uH (K) ± 10%.
SMTDR54 10~27uH (M) ± 20%; 33~220uH (K) ± 10%.
DC resistance (Ohm) Max
SMT POWER INDUCTORS
SMTDR 32 / 43 / 52 / 53 / 54 TYPE
SMTDR52 1.2~18uH (M) ± 20%; 22~470uH (K) ± 10%. SMTDR53 1.0~18uH (M) ± 20%; 22~470uH (K) ± 10%.
Part No. L
(µH)
1.0~8.2uH @ 7.96MHz 0.25V; 10~82uH @ 2.52MHz 0.25V; 100~470uH @ 1kHz 0.25V
Rated DC current (Amp) Max
6.2
DR73 DR75 DR104 DR105 DR73 DR75 DR104 DR105
100 10 0.0803 0.07 0.053 0.06 1.44 2.30 2.38 2.60
120 12 0.0897 0.08 0.061 0.07 1.39 2.00 2.13 2.45
150 15 0.104 0.09 0.070 0.08 1.24 1.80 1.87 2.27
180 18 0.111 0.10 0.081 0.09 1.12 1.60 1.73 2.15
220 22 0.129 0.11 0.088 0.10 1.07 1.50 1.60 1.95
270 27 0.153 0.12 0.100 0.11 0.94 1.30 1.44 1.76
330 33 0.170 0.13 0.120 0.12 0.85 1.20 1.26 1.50
390 39 0.217 0.16 0.151 0.14 0.74 1.10 1.20 1.37
470 47 0.252 0.18 0.170 0.17 0.68 1.10 1.10 1.28
560 56 0.282 0.24 0.199 0.19 0.64 0.94 1.01 1.17
680 68 0.332 0.28 0.223 0.22 0.59 0.85 0.91 1.11
820 82 0.406 0.37 0.252 0.25 0.54 0.78 0.85 1.00
101 100 0.481 0.43 0.344 0.35 0.51 0.72 0.74 0.97
121 120 0.536 0.47 0.396 0.40 0.49 0.66 0.69 0.89
151 150 0.755 0.64 0.544 0.47 0.40 0.58 0.61 0.78
181 180 1.022 0.71 0.621 0.63 0.36 0.51 0.56 0.72
221 220 1.200 0.96 0.721 0.73 0.31 0.49 0.53 0.66
271 270 1.306 1.11 0.949 0.97 0.29 0.42 0.45 0.57
331 330 1.495 1.26 1.100 1.15 0.28 0.40 0.42 0.52
391 390 1.77 1.245 1.30 0.36 0.38 0.48
471 470 1.96 1.526 1.48 0.34 0.35 0.42
561 560 1.904 1.90 0.32 0.33
681 680 2.25 0.28
821 820 2.55 0.24
Measuring Frequency :
Tolerance of Inductance :
SMTDR73 10~470uH (K) ± 10%; 56~330uH (K) ± 10%.
SMTDR104 10~47uH (M) ± 20%; 56~560uH (K) ± 10%.
SMTDR105 10~39uH (M) ± 20%; 47~820uH (K) ± 10%.
SMTDR75 10~470uH (K) ± 10%.
Part No. L
(µH)
SMT POWER INDUCTORS
SMTDR 73/ 75 / 104 / 105 TYPE
10~82uH @ 2.52MHz 0.25V; 100~330uH @ 1kHz 0.25V
DC resistance (Ohm) Max Rated DC current (Amp) Max
6.3
