SMTDR SERIES
Power Inductor–SMT Type
UNSHIELDED SMT POWER INDUCTORS
Applications :
．Power
supply for VTRs.
．LCD
televisions.
．Notebook
PCs.
．Portable
communication equipment.
．DC/DC
converters,etc.
Shape and Dimensions (Dimensions are in mm) :
Item
SMTDR31
SMTDR32
SMTDR43
SMTDR52
SMTDR53
SMTDR54
SMTDR73
SMTDR75
SMTDR104
SMTDR105
SMTDR107
A
3.5±0.3
3.5±0.3
4.5±0.3
5.8±0.3
5.8±0.3
5.8±0.3
7.8±0.3
7.8±0.3
10.0±0.3
10.0±0.3
10.0±0.3
B
3.0±0.3
3.0±0.3
4.0±0.3
5.2±0.3
5.2±0.3
5.2±0.3
7.0±0.3
7.0±0.3
9.0±0.3
9.0±0.3
9.0±0.3
C
1.1±0.3
2.0±0.3
3.2±0.3
2.5±0.3
3.0±0.3
4.5±0.35
3.5±0.5
5.0±0.5
4.0±0.5
5.4±0.4
7.5 Max.
Item
SMTDR31
SMTDR32
SMTDR43
SMTDR52
SMTDR53
SMTDR54
SMTDR73
SMTDR75
SMTDR104
SMTDR105
SMTDR107
H
3.5
3.5
4.5
5.5
5.5
5.5
7.5
7.5
9.5
9.5
9.5
I
1.6
1.6
1.75
2.15
2.15
2.15
3.0
3.0
3.75
3.75
3.75
J
0.8
0.8
1.5
1.7
1.7
1.7
2.0
2.0
2.5
2.5
2.5
Features :
．Silver
Plated Type, Low cost
designed
.
．High
power, High saturation inductors.
．Ideal
inductors for DC-DC conversion.
．Available
on tape and reel for auto surface
mounting.
Product identification :
SMT
(1)
DR105
(2)
-
331
(3)
K
(4)
(1)Type :
Surface Mountable Type
.
(2)Style :
DR
Core :
OD=10mm, HT=5.4mm.
(3)Inductance :
331
for
330
uH.
(4)Inductance tolerance : "M": ±20%; "L": ±15%; "K": ±10%
Characteristics :
．Rated
Current: It is either the inductance is 10%
lower than its initial value in DC. saturation
characteristics or temperature raise becomes
△T=40℃
(Ta=20℃), whichever is lower.
．Operating
temperature : -30℃ to 105℃.
Test equipments :
．Inductance
measured at 0Adc on HP 4284A LCR
meter or equivalent.
．DCR
measured on
or equivalent.
Chroma 16502 micro-ohmmeter
．Electrical
specifications at 25℃.
3L
3L Electronic Corp.
Electronic Corp.
Lasting.
Leaning. Leading
Lasting.
Leaning. Leading
9.1
9.1
Web : http://www.3lcoil.com
Web :
http://www.3lcoil.com
SMTDR31 series
Part No.
SMTDR31-2R2M
SMTDR31-3R3M
SMTDR31-4R7M
SMTDR31-6R8M
SMTDR31-8R2M
SMTDR31-100M
SMTDR31-120M
SMTDR31-150M
SMTDR31-220M
SMTDR31-270M
Inductance
L
(uH)
2.2
3.3
4.7
6.8
8.2
10.0
12.0
15.0
22.0
27.0
Test
Freq.
(0.1V)
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
100 KHz
DCR
(Ω)
Max.
0.24
0.27
0.30
0.47
0.52
0.55
0.75
0.91
1.20
1.50
Rated
Current
(A) Max.
1.20
1.08
1.00
0.80
0.76
0.70
0.60
0.50
0.40
0.36
SMTDR series
Part No.
1R0
1R2
1R4
1R5
1R8
2R2
2R7
3R3
3R9
4R7
5R6
6R8
8R2
100
120
150
180
220
270
330
390
470
560
680
820
101
121
151
181
221
L
(uH)
1.0
1.2
1.4
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
DR32
0.045
0.050
DC resistance
(Ω)
Max.
DR43 DR52 DR53
0.0487
0.050
0.0562
0.060
0.0637
0.0712
0.0787
0.0862
0.0937
0.1087
0.1257
0.1312
0.1462
0.182
0.210
0.235
0.338
0.378
0.522
0.540
0.587
0.844
0.937
1.117
0.065
0.07
0.08
0.10
0.12
0.14
0.15
0.16
0.17
0.20
0.23
0.25
0.30
0.35
0.40
0.50
0.55
0.65
0.75
0.95
1.20
1.40
1.75
2.00
2.60
3.00
0.03
0.03
0.03
0.03
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.13
0.16
0.19
0.21
0.28
0.32
0.38
0.42
0.52
0.56
0.68
0.82
1.10
1.20
1.50
1.80
2.00
DR54
Rated current (Amp) Max.
DR32 DR43 DR52 DR53 DR54
2.20
2.10
2.52
1.70
1.65
1.60
1.40
1.04
1.00
1.00
0.95
0.95
0.92
1.95
1.75
1.58
1.44
1.33
1.15
0.99
0.95
0.84
1.04
0.97
0.85
0.74
0.68
0.62
0.56
0.52
0.44
0.42
0.37
4.00
3.70
3.50
3.20
2.70
2.40
2.00
1.80
1.50
1.40
1.30
1.10
1.05
1.00
0.90
0.85
0.75
0.70
0.60
0.55
0.50
0.45
0.40
0.35
0.25
0.22
0.20
4.10
3.70
3.50
3.20
2.80
2.60
2.50
2.40
2.20
2.00
1.80
1.75
1.70
1.60
1.50
1.40
1.10
1.00
0.90
0.85
0.80
0.65
0.60
0.58
0.43
0.41
0.38
1.44
1.40
1.30
1.23
1.11
0.97
0.88
0.80
0.72
0.68
0.61
0.58
0.52
0.48
0.40
0.38
0.35
2.56
4.20
4.50
4.20
0.055
0.070
0.085
0.100
0.120
0.125
0.135
0.145
0.20
0.25
0.32
0.35
0.46
0.52
0.65
0.75
0.92
1.12
1.27
1.50
2.00
2.15
2.80
3.40
4.20
4.50
5.70
0.10
0.12
0.14
0.15
0.18
0.20
0.23
0.32
0.37
0.42
0.46
0.60
0.70
0.93
1.10
1.38
1.57
0.90
0.85
0.75
0.70
0.60
0.55
0.50
0.48
0.45
0.30
0.26
0.23
0.20
0.18
0.16
0.15
0.14
Lasting. Leaning. Leading
Lasting. Leaning. Leading
3L Electronic Corp.
3L Electronic Corp.
9.2
9.2
Web : http://www.3lcoil.com
Web :
http://www.3lcoil.com
Power Inductor–SMT Type
SMTDR series
Power Inductor–SMT Type
Part No.
271
331
391
471
L
(uH)
270
330
390
470
DR32
8.50
9.50
DC resistance
(Ω)
Max.
DR43 DR52 DR53
3.70
4.30
6.00
6.70
2.90
3.30
3.70
4.90
DR54
Rated current (Amp) Max.
DR32 DR43 DR52 DR53
DR54
0.10
0.09
0.18
0.17
0.16
0.15
0.35
0.28
0.26
0.20
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%.
SMTDR52 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%.
SMTDR series
Part No.
(
100
120
150
180
220
270
330
390
470
560
680
820
101
121
151
181
221
271
331
391
471
561
681
821
10~82uH
SMTDR73
SMTDR75
SMTDR104
SMTDR105
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
@ 2.52MHz 0.25V; 100~330uH @ 1kHz 0.25V
10~470uH (K) ± 10%;
10~470uH (K) ± 10%.
10~47uH (M) ± 20%;
10~39uH (M) ± 20%;
56~560uH (K) ± 10%.
47~820uH (K) ± 10%.
56~330uH (K) ±10%.
L
)
DC resistance
(Ω)
Max.
DR73
DR75
DR104
DR105
0.0803
0.0897
0.104
0.111
0.129
0.153
0.170
0.217
0.252
0.282
0.332
0.406
0.481
0.536
0.755
1.022
1.200
1.306
1.495
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.16
0.18
0.24
0.28
0.37
0.43
0.47
0.64
0.71
0.96
1.11
1.26
1.77
1.96
0.053
0.061
0.070
0.081
0.088
0.100
0.120
0.151
0.170
0.199
0.223
0.252
0.344
0.396
0.544
0.621
0.721
0.949
1.100
1.245
1.526
1.904
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.14
0.17
0.19
0.22
0.25
0.35
0.40
0.47
0.63
0.73
0.97
1.15
1.30
1.48
1.90
2.25
2.55
Rated current (Amp) Max.
DR73
DR75
DR104
1.44
1.39
1.24
1.12
1.07
0.94
0.85
0.74
0.68
0.64
0.59
0.54
0.51
0.49
0.40
0.36
0.31
0.29
0.28
2.30
2.00
1.80
1.60
1.50
1.30
1.20
1.10
1.10
0.94
0.85
0.78
0.72
0.66
0.58
0.51
0.49
0.42
0.40
0.36
0.34
2.38
2.13
1.87
1.73
1.60
1.44
1.26
1.20
1.10
1.01
0.91
0.85
0.74
0.69
0.61
0.56
0.53
0.45
0.42
0.38
0.35
0.32
DR105
2.60
2.45
2.27
2.15
1.95
1.76
1.50
1.37
1.28
1.17
1.11
1.00
0.97
0.89
0.78
0.72
0.66
0.57
0.52
0.48
0.42
0.33
0.28
0.24
Measuring Frequency :
Tolerance of Inductance :
Lasting. Leaning. Leading
Lasting. Leaning. Leading
3L
3L Electronic Corp.
Electronic Corp.
9.3
9.3
Web : http://www.3lcoil.com
Web :
http://www.3lcoil.com
SMTDR 107 series
Part No.
SMTDR107-100M
SMTDR107-120M
SMTDR107-150M
SMTDR107-180M
SMTDR107-220M
SMTDR107-270M
SMTDR107-330M
SMTDR107-390M
SMTDR107-470M
SMTDR107-560M
SMTDR107-680M
SMTDR107-820M
SMTDR107-101K
SMTDR107-121K
SMTDR107-151K
SMTDR107-181K
SMTDR107-221K
SMTDR107-271K
SMTDR107-331K
SMTDR107-391K
SMTDR107-561K
SMTDR107-681K
SMTDR107-821K
Inductance
L
(uH)
10.0
12.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
56.0
68.0
82.0
100.0
120.0
150.0
180.0
220.0
270.0
330.0
390.0
560.0
680.0
820.0
Test
Freq.
(0.25V)
2.52MHz
2.52MHz
2.52MHz
2.52MHz
2.52MHz
2.52 MHz
2.52MHz
2.52MHz
2.52MHz
2.52MHz
2.52 MHz
2.52MHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
1 KHz
DCR
( Ω)
Max.
34
37
46
52
66
78
89
116
124
153
185
207
272
299
381
431
549
621
815
906
1295
1662
1924
I sat
(A)
Max.
8.0
7.5
6.5
6.2
5.6
5.1
4.7
4.4
3.9
3.5
3.3
3.0
2.7
2.5
2.3
2.1
1.8
1.7
1.5
1.4
1.1
1.0
0.9
I rms
(A)
Max.
5.0
4.0
3.5
3.2
3.0
2.8
2.7
2.4
2.2
2.0
1.6
1.5
1.45
1.4
1.3
1.25
1.1
1.05
0.9
0.85
0.7
0.61
0.57
Lasting. Leaning. Leading
Lasting. Leaning. Leading
3L Electronic Corp.
3L Electronic Corp.
9.4
9.4
Web : http://www.3lcoil.com
Web :
http://www.3lcoil.com
Power Inductor–SMT Type
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