DRA125-470-R COILTRONICS, DRA125-470-R Datasheet - Page 2

• Manufacturer Part Number: DRA125-470-R
• Description: INDUCTOR POWER, 20UH, 7.8A, PCB
• Manufacturer: COILTRONICS

Specifications of DRA125-470-R

• Inductance Tolerance: ± 20%
• Dc Resistance Max: 0.081ohm
• Dc Current Rating: 2.59Arms
• Inductor Case Style: SMD
• No. Of Pins: 2
• Lead Spacing: 7.5mm
• Inductor Type: Power
• Inductance: 47µH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Magnetics Solutions
For Automotive Applications
(1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc,
(2) Irms: DC current for an approximate ∆T of 40°C without core loss. Derating is
(3) Isat Amperes peak for approximately 30% rolloff (@25°C)
(4) Isat Amperes peak for approximately 40% rolloff (@125°C)
Part Number
DRA74-R33-R
DRA74-1R0-R
DRA74-1R5-R
DRA74-2R2-R
DRA74-3R3-R
DRA74-4R7-R
DRA74-6R8-R
DRA74-8R2-R
DRA74-100-R
DRA74-150-R
DRA74-220-R
DRA74-330-R
DRA74-470-R
DRA74-680-R
DRA74-820-R
DRA74-101-R
DRA74-151-R
DRA74-221-R
DRA74-331-R
DRA74-471-R
DRA74-681-R
DRA74-821-R
DRA74-102-R
DRA124-R47-R
DRA124-1R0-R
DRA124-1R5-R
DRA124-2R2-R
DRA124-3R3-R
DRA124-4R7-R
DRA124-6R8-R
DRA124-8R2-R
DRA124-100-R
DRA124-150-R
DRA124-220-R
DRA124-330-R
DRA124-470-R
DRA124-680-R
DRA124-820-R
DRA124-101-R
DRA124-151-R
DRA124-221-R
DRA124-331-R
DRA124-471-R
DRA124-681-R
DRA124-821-R
DRA124-102-R
DRA125-R47-R
DRA125-1R0-R
DRA125-1R5-R
DRA125-2R2-R
DRA125-3R3-R
DRA125-4R7-R
DRA125-6R8-R
DRA125-8R2-R
DRA125-100-R
tolerance is ±20%
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 165°C under worst
case operating conditions verified in the end application.
Inductance
Rated
1000
1000
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
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
0.47
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
100
150
220
330
470
680
820
100
150
220
330
470
680
820
OCL (1)
+/-20%
1001.7
1001.0
0.288
0.897
15.14
46.56
81.45
218.9
471.5
815.0
0.423
14.10
209.6
826.7
22.25
33.21
68.37
150.9
328.9
682.8
0.821
10.37
23.00
34.13
46.27
69.77
80.57
151.7
326.9
473.0
682.1
0.453
0.854
1.31
2.33
3.05
4.68
6.51
8.51
9.62
98.5
1.36
2.04
2.79
4.74
7.28
8.88
98.8
1.41
2.12
2.89
4.90
6.23
7.49
9.22
µH
Amperes
Irms (2)
0.996
0.879
0.822
0.661
0.544
0.435
0.383
0.315
0.279
0.260
15.15
11.65
1.454
1.285
1.199
0.967
0.865
0.690
0.568
0.466
0.406
0.380
18.47
15.94
12.89
10.61
7.26
6.01
5.55
4.82
4.16
3.41
2.91
2.66
2.56
2.06
1.68
1.37
1.14
9.36
7.64
6.94
5.47
4.46
3.87
3.67
3.10
2.44
1.98
1.78
9.69
7.67
6.81
6.41
5.57
(5) DCR limits @ 25°C
(6) K-factor: Used to determine B p-p for core loss (see graph).
(7) Part Number Definition: DRAxxx-xxx-R
Amperes
Isat (3)
B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
∆I (Peak to peak ripple current in Amps).
DRAxxx = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
18.40
10.22
1.108
1.034
0.929
0.748
0.626
0.514
0.420
0.352
0.327
0.292
30.80
22.00
17.11
14.00
11.85
2.369
2.232
2.000
1.621
1.363
1.092
0.911
0.759
0.697
0.629
33.20
23.71
18.44
15.09
12.77
8.36
6.13
5.41
4.38
3.68
3.17
2.97
2.36
1.96
1.61
1.37
9.06
7.33
6.70
6.16
5.31
4.16
3.42
2.91
9.76
8.74
7.90
7.22
High Efficiency, Shielded Inductors
Amperes
Isat (4)
14.72
1.099
0.887
0.827
0.743
0.598
0.501
0.411
0.336
0.282
0.262
0.234
2.325
1.895
1.786
1.600
1.297
1.090
0.874
0.729
0.607
0.557
0.503
26.56
18.97
14.76
12.07
10.22
8.18
6.69
4.91
4.33
3.50
2.94
2.54
2.37
1.89
1.57
1.29
24.6
17.6
13.7
11.2
9.48
7.25
5.87
5.36
4.93
4.25
3.33
2.74
7.81
6.99
6.32
5.77
High Power Density,
DCR (5)
0.0054
0.0078
0.0092
0.0019
0.0031
0.0049
0.0016
0.0021
0.0033
0.0048
0.0058
0.0092
0.012
0.016
0.024
0.034
0.040
0.043
0.067
0.100
0.151
0.219
0.286
0.367
0.419
0.648
0.007
0.009
0.014
0.021
0.028
0.031
0.044
0.071
0.108
0.134
0.201
0.257
0.296
0.454
0.568
0.892
0.012
0.013
0.017
Typ.
0.96
1.50
1.93
2.86
3.63
4.19
1.32
1.96
2.57
2.94
(Ω)
DRA Series
K-factor (6)
52.6
29.2
23.9
17.5
15.5
12.5
10.5
16.7
12.0
16.7
12.0
9.1
8.5
6.7
5.6
4.6
3.9
3.2
3.0
2.7
2.1
1.8
1.5
1.2
1.0
0.9
0.8
9.3
7.6
6.4
4.9
4.0
3.6
3.3
2.9
2.3
1.9
1.6
1.3
1.2
1.1
0.9
0.7
0.6
0.5
0.4
0.4
0.3
9.3
7.6
6.4
4.9
4.4
4.0
3.6