®
DR Series
High Power Density,
High Efficiency, Shielded Inductors
Description
• 125C maximum total temperature operation
• Four sizes of shielded drum core inductors
• Inductance range from 0.33uH to 1000uH
• Current range up to 56 Amps peak
• Magnetic shielding
• Secure mounting
• RoHS compliant (-R option)
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: -40C to +125C
• Operating ambient temperature range: -40C to +125C
(range is application specific)
• Infrared reflow temperature: +240C for 30 seconds max.
Part Number
DR73-R33
DR73-1R0
DR73-1R5
DR73-2R2
DR73-3R3
DR73-4R7
DR73-6R8
DR73-8R2
DR73-100
DR73-150
DR73-220
DR73-330
DR73-470
DR73-680
DR73-820
DR73-101
DR73-151
DR73-221
DR73-331
DR73-471
DR73-681
DR73-821
DR73-102
DR74-R33
DR74-1R0
DR74-1R5
DR74-2R2
DR74-3R3
DR74-4R7
DR74-6R8
DR74-8R2
DR74-100
DR74-150
DR74-220
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
0.33
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
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
0.294
0.952
1.422
1.986
3.396
5.182
7.344
8.566
9.882
16.09
21.73
Irms
(2)
Amperes
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
6.26
5.39
4.94
4.76
3.94
3.34
2.60
2.53
2.41
2.11
1.75
Packaging
• Supplied in tape and reel packaging, 1350 (DR73),
1100 (DR74), 600 (DR125), and 350 (DR127) per reel
Option Code
-R
Isat
(3)
Amperes
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
18.4
10.2
8.35
7.06
5.40
4.37
3.67
3.40
3.17
2.48
2.13
OPTION CODE
Description
RoHS compliant version
DCR
(4)
(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
0.0074
0.0099
0.0118
0.0126
0.0183
0.0254
0.0418
0.0441
0.0489
0.0637
0.0925
Volt-uSec
(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
1.71
3.08
3.76
4.45
5.81
7.18
8.55
9.23
9.92
12.7
14.7
(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.
®
DR Series
High Power Density,
High Efficiency, Shielded Inductors
Part Number
DR74-330
DR74-470
DR74-680
DR74-820
DR74-101
DR74-151
DR74-221
DR74-331
DR74-471
DR74-681
DR74-821
DR74-102
DR125-R47
DR125-1R0
DR125-1R5
DR125-2R2
DR125-3R3
DR125-4R7
DR125-6R8
DR125-8R2
DR125-100
DR125-150
DR125-220
DR125-330
DR125-470
DR125-680
DR125-820
DR125-101
DR125-151
DR125-221
DR125-331
DR125-471
DR125-681
DR125-821
DR125-102
DR125-124
DR127-R47
DR127-1R0
DR127-1R5
DR127-2R2
DR127-3R3
DR127-4R7
DR127-6R8
DR127-8R2
DR127-100
DR127-150
DR127-220
DR127-330
DR127-470
DR127-680
DR127-820
DR127-101
DR127-151
DR127-221
DR127-331
DR127-471
DR127-681
DR127-821
DR127-102
Rated
Inductance
(µH)
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
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
120000
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)
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
22.36
33.74
47.47
67.91
86.89
102.7
151.1
216.8
332.6
473.1
679.8
828.0
1008
120630
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)
Amperes
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
3.70
3.28
2.71
2.22
2.05
1.78
1.48
1.19
1.06
0.87
0.70
0.60
0.57
0.060
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)
Amperes
Peak
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
4.71
3.84
3.24
2.70
2.39
2.20
1.81
1.51
1.22
1.02
0.85
0.77
0.70
0.069
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)
Typ.
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
0.0396
0.0505
0.0740
0.101
0.128
0.170
0.248
0.384
0.482
0.718
1.10
1.49
1.69
150
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-uSec
(5)
Typ.
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
22.2
27.2
32.3
38.6
43.7
47.5
57.6
69.0
85.5
102
122
135
149
1521
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.
®
DR Series
High Power Density,
High Efficiency, Shielded Inductors
Mechanical Diagrams
DR73 Series
BOTTOM VIEW
6.0
FRONT VIEW
7.6 Max
TOP VIEW
RECOMMENDED PCB 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 PCB 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 PCB LAYOUT
2.05
Typ.
SCHEMATIC
13.80
1
4.90
1
Typ
2
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 PCB LAYOUT
2.05
Typ.
SCHEMATIC
13.80
4.90
Typ
1
2
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
®
DR Series
High Power Density,
High Efficiency, Shielded Inductors
Packaging Information
DR73 Series
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
Ao=7.90mm
Bo=7.90mm
Ko=3.80mm
Ko
Ao
A
User direction of feed
SECTION A-A
Parts packaged on 13" Diameter reel,
1,350 parts per reel.
DR74 Series
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
DR74
xxy
Bo
16.00
±0.3
ACTUAL SIZE
DR74
2
Ao=7.90mm
Bo=7.90mm
Ko=4.70mm
Ko
Ao
A
User direction of feed
SECTION A-A
Parts packaged on 13" Diameter reel,
1,100 parts per reel.
DR125 Series
4.0
1.5 dia
+0.1/-0.0
2.0
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
Parts packaged on 13" Diameter reel,
600 parts per reel.
DR127 Series
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
2
A0
K0
20.00
A
SECTION A-A
User direction of feed
Parts packaged on 13" Diameter reel,
350 parts per reel.
Dimensions are in millimeters.
®
DR Series
High Power Density,
High Efficiency, Shielded Inductors
Rolloff
OCL vs Isat DR73
100
90
80
70
80
100
OCL vs Isat DR74
OCL (%)
50
40
30
20
10
0
0
20
40
60
80
100
120
140
160
OCL (%)
60
60
40
20
0
0
20
40
60
80
100
120
140
160
180
% of Isat
% of Isat
OCL vs Isat DR125
100
90
80
70
100
90
80
70
OCL vs Isat DR127
OCL (%)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
OCL (%)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
% of Isat
% Idc sat
Core Loss
Irms DERATING WITH CORE LOSS
0
10
30
50
60
70
80
Hz
Hz
Hz
Hz
0K
20
0K
0K
50
K
90
92
94
95
96
97
98
99
10
20
30
40
60
80
100
200
300
400
600
800
1000
% of Applied Volt-µSecond
25
K
30
10
Hz
