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DRAQ127

Automotive grade

Dual winding, high power density shielded drum core power inductors

Dimensions - mm

Technical Data

4372

Effective January 2018

Product specifications

1. Open Circuit Inductance (OCL) Test Parameters: 100 kHz, 0.25 Vrms, 0.0

Adc

2. Irms: DC current for an approximate temperature rise of 40 °C without core

loss. Derating is 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.

3. Isat1: Peak current for approximately 30% rolloff at +25 °C.

4. Isat2: Peak current for approximately 40% rolloff at +125 °C.

5. K-factor: Used to determine Bp-p for core loss (see graph). Bp-p = K * L * ∆I.

Bp-p:(Gauss), K: (K-factor from table), L: (Inductance in µH), ∆I (Peak-to-peak

ripple current in Amps).

6. Part Number Definition: DRAQxxx-xxx-R

- DRAQxxx = Product code and size

- xxx= Inductance value in uH, R = decimal point, If no R is present then 3rd

digit equals number of zeros.

- “-R” suffix = RoHS compliant

1

3

2

4

Dual Inductor

1

3

2

4

Series Mode

1

3

2

4

Parallel Mode

L1

L2

L1

L2

L1

L2

Parallel Ratings

Series Ratings

±25%

(μH)

I

rms

2

(A)

I

3

(A)

I

4

(A)

DCR (Ω)

@ +20 °C

(Typ.)

DCR (Ω)

@ +20 °C

(Max.)

±25%

(μH)

I

rms

2

(A)

I

3

(A)

I

4

(A)

DCR (Ω)

@ +20 °C

(Typ.)

DCR (Ω)

@ +20 °C

(Max.)

DRAQ127-100-R

9.63

6.02

11.2

8.96

0.018

0.022

24.0

38.5

3.01

5.60

4.48

0.072

0.089

12.0

DRAQ127-150-R

14.9

4.83

9.03

7.23

0.027

0.032

19.4

59.6

2.41

4.52

3.61

0.108

0.128

9.70

DRAQ127-220-R

22.0

3.98

7.57

6.05

0.040

0.047

16.2

88.0

1.99

3.79

3.03

0.162

0.192

8.10

DRAQ127-330-R

32.0

3.22

6.22

4.98

0.060

0.072

13.3

128.0

1.61

3.11

2.49

0.240

0.288

6.65

DRAQ127-470-R

47.9

2.62

5.09

4.07

0.091

0.110

10.9

192.0

1.31

2.54

2.03

0.364

0.440

5.45

Top view

Front view

Bottom view

Part Marking: DRA

Q127, ### = inductance value in µH, R = decimal point; if no R is present, then 3rd digit equals number of zeros wwllyy = Date code,

R = revision level

All soldering surfaces to be coplanar within 0.10 millimeters

Tolerances are ± 0.2 millimeters unless stated otherwise.

Do not route traces or vias underneath the inductor

*Special Characteristic epoxy protrusion or any flashing from the plastic on the header/base can be below the terminal surface and must not exceed 0.08

mm beyond the bottom surface of the terminal.

Recommended pad layout

Schematic