DR Series
High Power Density, High Efficiency, Shielded Inductors
• Magnetic shielding
• Secure mounting
• Ferrite core material
Applications
• Computer, DVD players, and portable power devices
• LCD panels
• 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 max.
Packaging
• Supplied in tape and reel packaging, 1350 (DR73), 1100 (DR74),
600 (DR125), and 350 (DR127) per reel
OCL
(1)
+/-20%
(µH)
0.306
0.992
1.482
2.070
3.540
4.422
6.480
8.930
10.30
15.01
22.65
34.41
48.62
68.91
80.37
101.4
150.9
223.3
325.5
465.8
676.5
821.7
995.0
Irms
(2)
Amps
6.21
5.28
4.67
4.15
3.31
3.09
2.55
2.19
2.08
1.83
1.62
1.31
1.08
0.89
0.86
0.73
0.58
0.52
0.42
0.35
0.29
0.27
0.26
Isat
(3)
Amps
Peak
14.4
7.97
6.52
5.52
4.22
3.78
3.12
2.66
2.47
2.05
1.67
1.35
1.14
0.96
0.89
0.79
0.65
0.53
0.44
0.37
0.31
0.28
0.25
DCR
(4)
Ω
(Ω)
Typ.
0.0073
0.0102
0.0130
0.0165
0.0259
0.0297
0.0435
0.0592
0.0656
0.0844
0.107
0.166
0.241
0.358
0.384
0.527
0.851
1.05
1.59
2.36
3.47
3.93
4.34
Volt-µSec
(5)
Typ.
1.98
3.56
4.36
5.15
6.73
7.52
9.11
10.7
11.5
13.9
17.0
21.0
24.9
29.7
32.1
36.0
44.0
53.5
64.5
77.2
93.1
103
113
Description
• 125°C maximum total operating temperature
• Four sizes of shielded drum core inductors
• Inductance range from 0.33µH to 1000µH
• Current range up to 56 amps peak
Part Number
DR73-R33-R
DR73-1R0-R
DR73-1R5-R
DR73-2R2-R
DR73-3R3-R
DR73-4R7-R
DR73-6R8-R
DR73-8R2-R
DR73-100-R
DR73-150-R
DR73-220-R
DR73-330-R
DR73-470-R
DR73-680-R
DR73-820-R
DR73-101-R
DR73-151-R
DR73-221-R
DR73-331-R
DR73-471-R
DR73-681-R
DR73-821-R
DR73-102-R
Rated
Inductance
(µH)
0.33
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
(5) Applied Volt-Time product (V-µS) across the inductor. This value represent the applied V-µS
at 100kHz necessary to generate a core loss equal to 10% of the total losses for 40°C
temperature rise.
6) Part number definition: DRxxx-yyy-R
DRxxx = product code and size,
-yyy = inductance value in µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
1207
BU-SB07327
Page 1 of 6
Data Sheet 4315
Part Number
DR74-R33-R
DR74-1R0-R
DR74-1R5-R
DR74-2R2-R
DR74-3R3-R
DR74-4R7-R
DR74-6R8-R
DR74-8R2-R
DR74-100-R
DR74-150-R
DR74-220-R
DR74-330-R
DR74-470-R
DR74-680-R
DR74-820-R
DR74-101-R
DR74-151-R
DR74-221-R
DR74-331-R
DR74-471-R
DR74-681-R
DR74-821-R
DR74-102-R
DR125-R47-R
DR125-1R0-R
DR125-1R5-R
DR125-2R2-R
DR125-3R3-R
DR125-4R7-R
DR125-6R8-R
DR125-8R2-R
DR125-100-R
DR125-150-R
DR125-180-R
DR125-220-R
DR125-330-R
DR125-470-R
DR125-560-R
DR125-680-R
DR125-820-R
DR125-101-R
DR125-151-R
DR125-221-R
DR125-331-R
DR125-471-R
DR125-681-R
DR125-821-R
DR125-102-R
DR125-472-R
DR125-124-R
Rated
Inductance
(µH)
0.33
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
0.47
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
18.0
22.0
33.0
47.0
56.0
68.0
82.0
100
150
220
330
470
680
820
1000
4700
120000
OCL
(1)
+/-20%
(µH)
0.294
0.952
1.422
1.986
3.396
5.182
7.344
8.566
9.882
16.09
21.73
33.01
49.64
69.67
80.95
101.6
150.0
227.0
335.6
465.3
671.2
812.7
1009
0.456
0.894
1.478
2.208
3.084
5.274
6.588
8.048
9.654
15.35
17.70
22.36
33.74
47.47
55.24
67.91
86.89
102.7
151.1
216.8
332.6
473.1
679.8
828.0
1008
4720
120630
Irms
(2)
Amps
6.26
5.39
4.94
4.76
3.94
3.34
2.60
2.53
2.41
2.11
1.75
1.41
1.15
1.03
0.91
0.86
0.69
0.56
0.45
0.40
0.33
0.31
0.27
17.6
15.0
13.8
10.9
9.26
7.18
6.64
5.54
5.35
4.27
3.81
3.70
3.28
2.71
2.31
2.22
2.05
1.78
1.48
1.19
1.06
0.87
0.70
0.60
0.57
0.268
0.060
Isat
(3)
Amps
Peak
18.4
10.2
8.35
7.06
5.40
4.37
3.67
3.40
3.17
2.48
2.13
1.73
1.41
1.19
1.11
0.99
0.81
0.66
0.54
0.46
0.38
0.35
0.31
33.0
23.6
18.3
15.0
12.7
9.71
8.68
7.86
7.17
5.69
5.32
4.71
3.84
3.24
3.00
2.70
2.39
2.20
1.81
1.51
1.22
1.02
0.85
0.77
0.70
0.32
0.069
DCR
(4)
Ω
(Ω)
Typ.
0.0074
0.0099
0.0118
0.0126
0.0183
0.0254
0.0418
0.0441
0.0489
0.0637
0.0925
0.143
0.216
0.265
0.345
0.383
0.591
0.907
1.41
1.74
2.58
2.93
3.89
0.0018
0.0024
0.0029
0.0045
0.0063
0.0105
0.0123
0.0176
0.0189
0.0298
0.0377
0.0396
0.0505
0.0740
0.102
0.101
0.128
0.170
0.248
0.384
0.482
0.718
1.10
1.49
1.69
7.53
150
Volt-µSec
(5)
Typ.
1.71
3.08
3.76
4.45
5.81
7.18
8.55
9.23
9.92
12.7
14.7
18.1
22.2
26.3
28.4
31.8
38.6
47.5
57.8
68.1
81.7
89.9
100
3.17
4.43
5.70
6.97
8.23
10.8
12.0
13.3
14.6
18.4
19.6
22.2
27.2
32.3
34.8
38.6
43.7
47.5
57.6
69.0
85.5
102
122
135
149
322.4
1521
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
(5) Applied Volt-Time product (V-µS) across the inductor. This value represent the applied V-µS
at 100kHz necessary to generate a core loss equal to 10% of the total losses for 40°C
temperature rise.
6) Part number definition: DRxxx-yyy-R
DRxxx = product code and size,
-yyy = inductance value in µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
1207
BU-SB07327
Page 2 of 6
Data Sheet 4315
Part Number
DR127-R47-R
DR127-1R0-R
DR127-1R5-R
DR127-2R2-R
DR127-3R3-R
DR127-4R7-R
DR127-6R8-R
DR127-8R2-R
DR127-100-R
DR127-150-R
DR127-220-R
DR127-330-R
DR127-470-R
DR127-680-R
DR127-820-R
DR127-101-R
DR127-151-R
DR127-221-R
DR127-331-R
DR127-471-R
DR127-681-R
DR127-821-R
DR127-102-R
Rated
Inductance
(µH)
0.47
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
OCL
(1)
+/-20%
(µH)
0.419
0.821
1.357
2.027
2.831
4.841
7.387
8.861
10.47
14.09
22.93
33.92
47.05
66.48
79.75
99.31
144.9
221.5
323.6
467.1
676.7
818.1
1005
Irms
(2)
Amps
17.9
15.5
13.5
12.5
10.5
8.25
7.34
6.32
6.04
5.03
4.00
3.23
2.95
2.44
2.09
1.96
1.59
1.29
1.04
0.85
0.76
0.65
0.61
Isat
(3)
Amps
Peak
56.0
40.0
31.1
25.5
21.5
16.5
13.3
12.2
11.2
9.66
7.57
6.22
5.28
4.44
4.06
3.64
3.01
2.43
2.01
1.68
1.39
1.27
1.14
DCR
(4)
Ω
(Ω)
Typ.
0.00195
0.00313
0.00341
0.00402
0.00567
0.00917
0.0116
0.0157
0.0172
0.0247
0.0391
0.0600
0.0719
0.105
0.143
0.163
0.247
0.376
0.574
0.861
1.08
1.47
1.66
Volt-µSec
(5)
Typ.
3.50
4.90
6.30
7.70
9.10
11.9
14.7
16.1
17.5
20.3
25.9
31.5
37.1
44.1
48.3
53.9
65.1
80.5
97.3
117
141
155
172
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
(5) Applied Volt-Time product (V-µS) across the inductor. This value represent the applied V-µS
at 100kHz necessary to generate a core loss equal to 10% of the total losses for 40°C
temperature rise.
6) Part number definition: DRxxx-yyy-R
DRxxx = product code and size,
-yyy = inductance value in µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
1207
BU-SB07327
Page 3 of 6
Data Sheet 4315
Dimensions - mm
DR73 Series
BOTTOM VIEW
6.0
FRONT VIEW
7.6 Max
TOP VIEW
RECOMMENDED PAD LAYOUT
2.50
SCHEMATIC
1
2.0
7.6
Max
3.55
Max
DR73
###
3.25
2
8.50
1.13
DR74 Series
BOTTOM VIEW
FRONT VIEW
7.6
Max
2.0
7.6
Max
TOP VIEW
RECOMMENDED PAD LAYOUT
2.50
SCHEMATIC
1
4.35
Max
DR74
###
3.25
2
8.50
1.13
DR125 Series
BOTTOM VIEW
FRONT VIEW
TOP VIEW
RECOMMENDED PAD LAYOUT
2.05
Typ.
SCHEMATIC
13.80
1
4.90
2
Typ
1
12.50
Max
6.00
Max
12.50
Max
1
DR125-###
wwllyy R
2
5.50
2
10
3.85
DR127 Series
BOTTOM VIEW
FRONT VIEW
TOP VIEW
RECOMMENDED PAD LAYOUT
2.05
Typ.
SCHEMATIC
13.80
4.90
2
Typ
1
12.50
Max
8.00
Max
12.50
Max
1
DR127-###
wwllyy R
5.50
2
1
3.85
2
10
Dimensions in millimeters.
### = Inductance value per family chart
wwllyy = (date code) R = revision level
1207
BU-SB07327
Page 4 of 6
Data Sheet 4315
Packaging Information
DR73 Series
Supplied in tape and reel packaging,
1350 parts per reel, 13" diameter reel.
Ø1.50 +0.1/-0.0
12.00
2.00
±0.1
4.00
Ø1.50 Min.
A
1.75±0.10
1
7.50±0.1
DR73
xxy
Bo
16.00
±0.3
2
ACTUAL SIZE
DR73
Ko
Ao=7.90mm
Bo=7.90mm
Ko=3.80mm
Ao
A
User direction of feed
SECTION A-A
DR74 Series
Supplied in tape and reel packaging,
1100 parts per reel, 13" diameter reel.
2.00
±0.1
4.00
Ø1.50 +0.1/-0.0
12.00
Ø1.50 Min.
A
1.75±0.10
1
7.50±0.1
DR74
xxy
Bo
16.00
±0.3
ACTUAL SIZE
DR74
2
Ko
Ao
Ao=7.90mm
Bo=7.90mm
Ko=4.70mm
A
User direction of feed
SECTION A-A
DR125 Series
Supplied in tape and reel packaging,
600 parts per reel, 13" diameter reel.
1.5 dia
+0.1/-0.0
2.0
4.0
1.5 dia
min
A
1.7
1
11.5
DR125-###
wwllyy R
B0
24.0
+/-0.3
2
ACTUAL SIZE
DR125
16.00
Ao=13.0mm
Bo=13.0mm
Ko=6.30mm
K0
A0
A
SECTION A-A
User direction of feed
DR127 Series
Supplied in tape and reel packaging,
350 parts per reel, 13" diameter reel.
1.5 dia
+0.1/-0.0
2.0
4.0
1.5 dia
min
A
1.7
1
11.5
DR127-###
wwllyy R
B0
24.0
+/-0.3
ACTUAL SIZE
DR127
Ao=13.0mm
Bo=13.0mm
Ko=8.30mm
Dimensions are in millimeters.
2
A0
K0
20.00
A
SECTION A-A
User direction of feed
1207
BU-SB07327
Page 5 of 6
Data Sheet 4315
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