Technical Data
DS4311
Effective
September
2017
Supersedes
April
2014
DRQ
Dual winding, high
power density, shielded drum core
power inductors
Applications
•
•
•
•
•
•
•
•
•
Desktop and servers
DVD and media players
Portable and handheld devices
LCD panels
As a transformer: SEPIC, flyback
As an inductor: buck, boost, coupled inductor
DC-DC Converters
VRM inductor for CPU and DDR power
supplies
Input and output filter chokes
Product features
•
Environmental data
•
•
•
•
•
•
•
•
•
•
Dual winding inductors that can be used as
either a single inductor, or in coupled
inductor/transformer applications
(1:1 turns ratio)
Four sizes of shielded drum core inductors
Windings can be connected in series or
parallel, offering a broad range of inductance
and current ratings
Peak current ratings from 0.13 A to 56 A
RMS current ratings from 0.128 A to 17.9 A
Inductance ratings from 0.33 µH to 4.02 mH
200 Vac Isolation between windings
Ferrite core material
Storage temperature range (component):
-40 °C to +125 °C
Operating temperature range: -40 °C to +125 °C
(ambient plus self-temperature rise)
Solder reflow temperature:
J-STD-020 (latest revision) compliant
HALOGEN
Pb
HF
FREE
Technical Data
DS4311
Effective
September
2017
DRQ
Dual winding, high power density, shielded drum core power inductors
Product specifications
Parallel Ratings
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
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
I
rms
(A)
2
Series Ratings
4
Part Number
DRQ73-R33-R
DRQ73-1R0-R
DRQ73-1R5-R
DRQ73-2R2-R
DRQ73-3R3-R
DRQ73-4R7-R
DRQ73-6R8-R
DRQ73-8R2-R
DRQ73-100-R
DRQ73-150-R
DRQ73-220-R
DRQ73-330-R
DRQ73-470-R
DRQ73-680-R
DRQ73-820-R
DRQ73-101-R
DRQ73-151-R
DRQ73-221-R
DRQ73-331-R
DRQ73-471-R
DRQ73-681-R
DRQ73-821-R
DRQ73-102-R
I
sat3
(A)
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
Ω
typ.
Volt
µ-sec
5
OCL
1
±20%
(µH)
1.224
3.968
5.928
8.280
14.16
17.69
25.92
35.72
41.20
60.04
90.60
137.6
194.5
275.6
321.5
405.6
603.6
893.2
1302
1863
2706
3287
3980
I
(A)
2
rms
I
sat3
(A)
Peak
7.18
3.99
3.26
2.76
2.11
1.89
1.56
1.33
1.24
1.03
0.83
0.68
0.57
0.48
0.44
0.39
0.32
0.27
0.22
0.18
0.15
0.14
0.13
DCR
Ω
4
typ.
0.0296
0.0411
0.0527
0.0669
0.1035
0.1188
0.1742
0.2368
0.2623
0.339
0.429
0.665
0.965
1.43
1.54
2.11
3.41
4.20
6.36
9.44
13.88
15.72
17.36
Volt
5
µ-sec
3.96
7.12
8.72
10.3
13.5
15.0
18.2
21.4
23.0
27.8
34.0
42.0
49.8
59.4
64.2
72.0
88.0
107
129
154
186
206
226
6.19
5.25
4.64
4.11
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
0.0074
0.0103
0.0132
0.0167
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
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
3.10
2.63
2.32
2.06
1.66
1.55
1.28
1.10
1.04
0.916
0.811
0.653
0.542
0.444
0.430
0.367
0.289
0.260
0.211
0.173
0.143
0.134
0.128
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2. RMS current for an approximate DT of 40 °C without core loss.
It is recommended that the temperature of the part not exceed +125 °C.
3. Peak current for approximately 30% roll-off at +20 °C
4. DCR limits @ +20 °C
5. Applied Volt-Time product (V-µs) across the inductor. This value represents
the applied V-µs at 100 kHz necessary to generate a core loss equal to 10%
of the total losses for a 40 °C temperature rise.
6. Turns Ratio (1:3):(2-4) 1:1
7. Part number definition: DRQxxx-yyy-
- DRQxxx = product code and size,
- yyy = inductance value in µH,
- R = decimal point. If no R is present, third character = # of zeros
- “-R” suffix = RoHS complian
2
www.eaton.com/electronics
DRQ
Dual winding, high power density, shielded drum core power inductors
Technical Data
DS4311
Effective
September
2017
Product specifications
Parallel Ratings
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
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
I
rms
(A)
2
Series Ratings
4
Part Number
DRQ74-R33-R
DRQ74-1R0-R
DRQ74-1R5-R
DRQ74-2R2-R
DRQ74-3R3-R
DRQ74-4R7-R
DRQ74-6R8-R
DRQ74-8R2-R
DRQ74-100-R
DRQ74-150-R
DRQ74-220-R
DRQ74-330-R
DRQ74-470-R
DRQ74-680-R
DRQ74-820-R
DRQ74-101-R
DRQ74-151-R
DRQ74-221-R
DRQ74-331-R
DRQ74-471-R
DRQ74-681-R
DRQ74-821-R
DRQ74-102-R
I
sat3
(A)
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
DCR
Ω
Typ.
Volt
µ-sec
5
OCL
1
±20%
(µH)
1.176
3.808
5.688
7.944
13.58
20.73
29.38
34.26
39.53
64.36
86.92
132.0
198.6
278.7
323.8
406.4
600.0
908.0
1342
1861
2685
3251
4036
I
rms
(A)
2
I
sat3
(A)
Peak
9.18
5.10
4.17
3.53
2.70
2.19
1.84
1.70
1.58
1.24
1.07
0.87
0.71
0.60
0.55
0.49
0.41
0.33
0.27
0.23
0.19
0.17
0.16
DCR
Ω
4
Typ.
0.0295
0.0400
0.0461
0.0521
0.0732
0.102
0.167
0.177
0.196
0.255
0.371
0.574
0.865
1.06
1.38
1.53
2.37
3.63
5.66
6.97
10.3
11.7
15.6
Volt
5
µ-sec
3.42
6.16
7.52
8.9
11.6
14.4
17.1
18.5
19.8
25.4
29.4
36.2
44.4
52.6
56.8
63.6
77.2
95
116
136
163
180
200
6.20
5.33
4.96
4.66
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
0.0074
0.0100
0.0115
0.0130
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
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
3.10
2.66
2.48
2.33
1.97
1.67
1.30
1.27
1.20
1.05
0.874
0.702
0.573
0.517
0.453
0.430
0.346
0.279
0.224
0.202
0.166
0.156
0.135
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2. RMS current for an approximate DT of 40 °C without core loss.
It is recommended that the temperature of the part not exceed +125 °C.
3. Peak current for approximately 30% roll-off at +20 °C
4. DCR limits @ +20 °C
5. Applied Volt-Time product (V-µs) across the inductor. This value represents
the applied V-µs at 100 kHz necessary to generate a core loss equal to 10%
of the total losses for a 40 °C temperature rise.
6. Turns Ratio (1:3):(2-4) 1:1
7. Part number definition: DRQxxx-yyy-
- DRQxxx = product code and size,
- yyy = inductance value in µH,
- R = decimal point. If no R is present, third character = # of zeros
- “-R” suffix = RoHS complian
www.eaton.com/electronics
3
Technical Data
DS4311
Effective
September
2017
DRQ
Dual winding, high power density, shielded drum core power inductors
Product specifications
Rated
Inductance
Part Number
DRQ125-R47-R
DRQ125-1R0-R
DRQ125-1R5-R
DRQ125-2R2-R
DRQ125-3R3-R
DRQ125-4R7-R
DRQ125-6R8-R
DRQ125-8R2-R
DRQ125-100-R
DRQ125-150-R
DRQ125-220-R
DRQ125-330-R
DRQ125-470-R
DRQ125-680-R
DRQ125-820-R
DRQ125-101-R
DRQ125-151-R
DRQ125-221-R
DRQ125-331-R
DRQ125-471-R
DRQ125-681-R
DRQ125-821-R
DRQ125-102-R
(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
Parallel Ratings
OCL
1
±20%
(µH)
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
I
rms
(A)
2
Series Ratings
4
I
sat3
(A)
Peak
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
DCR
Ω
typ.
Volt
µ-sec
5
OCL
1
±20%
(µH)
1.824
3.576
5.912
8.832
12.34
21.10
26.35
32.19
38.62
61.40
89.44
135.0
189.9
271.6
347.6
410.8
604.4
867.2
1330
1892
2719
3312
4032
I
rms
(A)
2
I
sat3
(A)
Peak
16.5
11.8
9.15
7.50
6.35
4.86
4.34
3.93
3.59
2.85
2.36
1.92
1.62
1.35
1.20
1.10
0.905
0.755
0.610
0.510
0.425
0.385
0.350
DCR
Ω
4
typ.
0.0078
0.0096
0.0114
0.0182
0.0253
0.0420
0.0492
0.0705
0.0757
0.120
0.159
0.203
0.297
0.440
0.515
0.682
0.991
1.54
1.93
2.87
4.42
5.96
6.76
Volt
5
µ-sec
6.34
8.86
11.40
13.9
16.5
21.6
24.0
26.6
29.2
36.8
44.4
54.4
64.6
77.2
87.4
95.0
115.2
138
171
204
244
270
298
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
0.0018
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
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
8.80
7.51
6.89
5.46
4.63
3.59
3.32
2.77
2.67
2.13
1.84
1.64
1.35
1.11
1.03
0.892
0.739
0.594
0.530
0.434
0.350
0.301
0.283
1.
Open Circuit Inductance Test Parameters: 100 kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2.
RMS current for an approximate DT of 40 °C without core loss.
It is recommended that the temperature of the part not exceed
+125
°C.
3.
Peak current for approximately 30% roll-off at +20 °C
4.
DCR limits @ +20 °C
5.
Applied Volt-Time product (V-µs) across the inductor. This value represents
the applied V-µs at 100 kHz necessary to generate a core loss equal to 10%
of the total losses for a 40 °C temperature rise.
6. Turns Ratio (1:3):(2-4) 1:1
7. Part number definition: DRQxxx-yyy-
- DRQxxx = product code and size,
- yyy = inductance value in µH,
- R = decimal point. If no R is present, third character = # of zeros
- “-R” suffix = RoHS complian
4
www.eaton.com/electronics
DRQ
Dual winding, high power density, shielded drum core power inductors
Technical Data
DS4311
Effective
September
2017
Product specifications
Parallel Ratings
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
I
rms
(A)
2
Series Ratings
4
Part Number
DRQ127-R47-R
DRQ127-1R0-R
DRQ127-1R5-R
DRQ127-2R2-R
DRQ127-3R3-R
DRQ127-4R7-R
DRQ127-6R8-R
DRQ127-8R2-R
DRQ127-100-R
DRQ127-150-R
DRQ127-220-R
DRQ127-330-R
DRQ127-470-R
DRQ127-680-R
DRQ127-820-R
DRQ127-101-R
DRQ127-151-R
DRQ127-221-R
DRQ127-331-R
DRQ127-471-R
DRQ127-681-R
DRQ127-821-R
DRQ127-102-R
I
sat3
(A)
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
Ω
typ.
Volt
µ-sec
5
OCL
1
±20%
(µH)
1.676
3.284
5.428
8.108
11.32
19.36
29.55
35.44
41.88
56.36
91.72
135.7
188.2
265.9
319.0
397.2
579.6
886.0
1294
1868
2707
3272
4020
I
(A)
2
rms
I
sat3
(A)
Peak
28
20
15.6
12.7
10.8
8.24
6.67
6.09
5.60
4.83
3.78
3.11
2.64
2.22
2.03
1.82
1.51
1.22
1.01
0.838
0.697
0.633
0.571
DCR
Ω
4
typ.
0.0078
0.0104
0.0137
0.0161
0.0229
0.0367
0.0465
0.0627
0.0686
0.0990
0.157
0.241
0.288
0.421
0.573
0.653
0.989
1.50
2.30
3.44
4.32
5.88
6.64
Volt
5
µ-sec
7.00
9.80
12.60
15.4
18.2
23.8
29.4
32.2
35.0
40.6
51.8
63.0
74.2
88.2
96.6
107.8
130.2
161
195
234
282
310
344
17.9
15.5
13.5
12.5
10.4
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
0.00195
0.00261
0.00341
0.00373
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
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
8.94
7.74
6.77
6.23
5.23
4.13
3.67
3.16
3.02
2.51
2.00
1.61
1.47
1.22
1.04
0.980
0.796
0.645
0.522
0.427
0.380
0.325
0.307
1.
Open Circuit Inductance Test Parameters: 100 kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2.
RMS current for an approximate DT of 40 °C without core loss.
It is recommended that the temperature of the part not exceed
+125
°C.
3.
Peak current for approximately 30% roll-off at 20°C
4.
DCR limits @
+20
°C
5.
Applied Volt-Time product (V-µs) across the inductor. This value represents
the applied V-µs at 100
kHz
necessary to generate a core loss equal to 10%
of the total losses for a 40 °C temperature rise.
6. Turns Ratio (1:3):(2-4) 1:1
7. Part number definition: DRQxxx-yyy-
- DRQxxx = product code and size,
- yyy = inductance value in µH,
- R = decimal point. If no R is present, third character = # of zeros
- “-R” suffix = RoHS complian
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