10
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1
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 :
．SMTDR31 2.2 ~ 27.0uH 1.2 ~ 0.36A ．Rated DC Current: It is either the inductance is 10%
．SMTDR32 1.0 ~ 330uH 2.2 ~ 0.09A lower than its initial value in D.C. saturation characteristics
．SMTDR43 1.0 ~ 68uH 2.56 ~ 0.37A or temperature raise becomes △T=40℃ (Ta=20℃),
．SMTDR52 1.2 ~ 220uH 4.2 ~ 0.15A whichever is lower.
．SMTDR53 1.0 ~ 150uH 4.5 ~ 0.43A ．Operating temperature : -30 ℃ to 105 ℃.
．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 : Agilent 4284A or Agilent 4285A LCR meter. ．DC/DC converters,etc.
DCR tested by Milli-ohm meter.
．Electrical specifications at 25℃.
UNSHIELDED SMT POWER INDUCTORS
SMTDR 31/32/43/52/53/54/73/75/104/105 TYPE
10
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2
Inductance Test DCR Rated DC
Part No. Freq. OHM Current
L (uH) (@ 0.1V) Max. (A) Max.
SMTDR31-2R2M 2.2 100 KHz 0.24 1.20
SMTDR31-3R3M 3.3 100 KHz 0.27 1.08
SMTDR31-4R7M 4.7 100 KHz 0.30 1.00
SMTDR31-6R8M 6.8 100 KHz 0.47 0.80
SMTDR31-8R2M 8.2 100 KHz 0.52 0.76
SMTDR31-100M 10.0 100 KHz 0.55 0.70
SMTDR31-120M 12.0 100 KHz 0.75 0.60
SMTDR31-150M 15.0 100 KHz 0.91 0.50
SMTDR31-220M 22.0 100 KHz 1.20 0.40
SMTDR31-270M 27.0 100 KHz 1.50 0.36
UNSHIELDED SMT POWER INDUCTORS
SMTDR31 TYPE
10
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3
Part No.
L
DC resistance (OHM) Max. Rated DC current (Amp) Max.
(uH) 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 1.04
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 0.56
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 2.80 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
391 390 6.00
3.70
0.16
0.260
471 470 6.70
4.90
0.15
0.200
Measuring Frequency :
1.0~8.2uH @ 7.96MHz 0.25V; 10~82uH @ 2.52MHz 0.25V; 100~470uH @ 1kHz 0.25V
Tolerance of Inductance :
SMTDR32 1.0~18uH (M) ± 20%; 22~330uH (K) ± 10%. SMTDR43 1.0~27uH (M) ± 20%; 33~68uH (K) ± 10%.
SM
TDR52 1.2~18uH (M) ± 20%; 22~470uH (K) ± 10%. SMTDR53 1.0~18uH (M) ± 20%; 22~470uH (K) ±10%.
SMTDR54 10~27uH (M) ± 20%; 33~220uH (K) ± 10%.
UNSHIELDED SMT POWER INDUCTORS
SMTDR 32/43/52/53/54 TYPE
10
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4
Part No.
L
DC resistance (OHM) Max. Rated DC current (Amp) Max.
(μH) 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 :
10~82uH @ 2.52MHz 0.25V; 100~330uH @ 1kHz 0.25V
Tolerance of Inductance :
SMTDR73 10~470uH (K) ± 10%;
56~330uH (K) ± 10%.
SMTDR75 10~470uH (K) ± 10%.
SMTDR104 10~47uH (M) ± 20%; 56~560uH (K) ± 10%.
SMTDR105 10~39uH (M) ± 20%;
47~820uH (K) ± 10%.
UNSHIELDED SMT POWER INDUCTORS
SMTDR 73/75/104/105 TYPE
10
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5
Shape and size: (Dimensions are in mm)
Features: Ordering information:
．Silver plated type, low cost design. SMT DR137 – 471 K
．High power, high saturation inductors. (1) (2) (3) (4)
．Ideal inductors for DC-DC conversion. (1) Type: Surface Mounting Type.
．Available on tape and reel for auto surface mounting. (2) Style: DR Core :OD=13.0mm, HT=7.0mm.
(3) Inductance: 471for470uH.
(4) Inductance tolerance:
M: ± 20%; L: ±15%; K: ±10%
Inductance and rated current ranges: Characteristics:
．SMTDR137 1.5~1000uH 9.5~0.65A ．Saturation Rated Current (Isat): The current when the inductance
becomes 10% lower than its initial value. (Ta=20℃)
．Temperature Rise Current (Irms): The current when temperature
．
Test equipments: of coil increases up to Max. △T=40℃. (Ta=20℃)
L tested by HP4284A LCR meter @ 100KHz 0.1V. ．Operating temperature : -30 ℃ to 105 ℃.
DCR tested by Milli-ohm meter. Applications:
．Power supply for VTRs.
．LCD televisions.
．
Electrical specifications at 25℃. ．Notebook PCs.
．portable communication equipment.
．DC/DC converters, etc.
UNSHIELDED SMT POWER INDUCTORS
SMTDR137 TYPE
ITEM A C B H I J
SMTDR137
13.0±0.5 7.0±0.3
4.5 14.0 4.75 4.5
10
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6
Inductance Test DCR Rated DC Current
Part No. Freq. moHM (A) Max.
L (uH) (@ 0.1V) Max. Irms Isat
SMTDR137-1R5M 1.5 100 KHz 5.0 9.50 22.0
SMTDR137-2R2M 2.2 100 KHz 8.0 9.00 20.0
SMTDR137-2R7M 2.7 100 KHz 8.0 8.20 18.0
SMTDR137-3R3M 3.3 100 KHz 8.7 7.50 17.0
SMTDR137-4R7M 4.7 100 KHz 11.8 7.00 15.0
SMTDR137-5R6M 5.6 100 KHz 15.0 6.50 13.0
SMTDR137-6R8M 6.8 100 KHz 17.0 6.00 11.5
SMTDR137-8R2M 8.2 100 KHz 19.0 5.80 10.8
SMTDR137-100M 10.0 100 KHz 23.0 5.60 10.2
SMTDR137-120M 12.0 100 KHz 30.0 4.80 9.00
SMTDR137-150M 15.0 100 KHz 34.0 4.50 8.00
SMTDR137-180M 18.0 100 KHz 40.0 4.20 7.50
SMTDR137-220M 22.0 100 KHz 52.0 3.60 7.00
SMTDR137-270M 27.0 100 KHz 60.0 3.30 6.00
SMTDR137-330K 33.0 100 KHz 70.0 3.10 5.50
SMTDR137-390K 39.0 100 KHz 75.0 2.90 5.10
SMTDR137-470K 47.0 100 KHz 82.0 2.70 4.70
SMTDR137-560K 56.0 100 KHz 112.0 2.50 4.30
SMTDR137-680K 68.0 100 KHz 135.0 2.30 4.00
SMTDR137-820K 82.0 100 KHz 140.0 2.10 3.70
SMTDR137-101K 100.0 100 KHz 180.0 1.90 3.20
SMTDR137-121K 120.0 100 KHz 230.0 1.80 3.0
SMTDR137-151K 150.0 100 KHz 260.0 1.60 2.70
SMTDR137-181K 180.0 100 KHz 350.0 1.50 2.40
SMTDR137-221K 220.0 100 KHz 380.0 1.30 2.20
SMTDR137-271K 270.0 100 KHz 480.0 1.20 1.90
SMTDR137-331K 330.0 100 KHz 520.0 1.10 1.70
SMTDR137-391K 390.0 100 KHz 650.0 1.00 1.60
SMTDR137-471K 470.0 100 KHz 800.0 0.90 1.50
SMTDR137-561K 560.0 100 KHz 1100.0 0.85 1.30
SMTDR137-681K 680.0 100 KHz 1150.0 0.80 1.20
SMTDR137-821K 820.0 100 KHz 1600.0 0.75 1.10
SMTDR137-102K 1000.0 100 KHz 1700.0 0.65 1.00
UNSHIELDED SMT POWER INDUCTORS
SMTDR137 TYPE
