DRQ Series

Dual Winding, Shielded Inductors/Transformer

1207

BU-SB07326

Page 1 of 7

Data Sheet 4311

Description

• 125°C maximum total operating temperature

• 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 amps to 56 amps

• RMS current ratings from 0.128 amps to 17.9 amps

• Inductance ratings from 0.33µH to 4.02mH

• Surface Mount

• 200Vac Isolation between windings

• Ferrite core material

Applications

• 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

Environmental Data

• Storage temperature: -40°C to +125°C

• Operating temperature: -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 (DRQ73),

1100 (DRQ74), 600 (DRQ125), and 350 (DRQ127) per reel

Parallel Ratings

Series Ratings

Part Number

Rated

DCR Ω

DCR Ω

Inductance

+/-20%

Amps

Amps

typ.

µ-Sec

+/-20%

Amps

Amps

typ.

µ-Sec

(µH)

(µH)

Peak

(µH)

Peak

DRQ73-R33-R

0.33

0.306

6.19

14.4

0.0074

1.98

1.224

3.10

7.18

0.0296

3.96

DRQ73-1R0-R

1.00

0.992

5.25

7.97

0.0103

3.56

3.968

2.63

3.99

0.0411

7.12

DRQ73-1R5-R

1.50

1.482

4.64

6.52

0.0132

4.36

5.928

2.32

3.26

0.0527

8.72

DRQ73-2R2-R

2.20

2.070

4.11

5.52

0.0167

5.15

8.280

2.06

2.76

0.0669

10.3

DRQ73-3R3-R

3.30

3.540

3.31

4.22

0.0259

6.73

14.16

1.66

2.11

0.1035

13.5

DRQ73-4R7-R

4.70

4.422

3.09

3.78

0.0297

7.52

17.69

1.55

1.89

0.1188

15.0

DRQ73-6R8-R

6.80

6.480

2.55

3.12

0.0435

9.11

25.92

1.28

1.56

0.1742

18.2

DRQ73-8R2-R

8.20

8.930

2.19

2.66

0.0592

10.7

35.72

1.10

1.33

0.2368

21.4

DRQ73-100-R

10.0

10.30

2.08

2.47

0.0656

11.5

41.20

1.04

1.24

0.2623

23.0

DRQ73-150-R

15.0

15.01

1.83

2.05

0.0844

13.9

60.04

0.916

1.03

0.339

27.8

DRQ73-220-R

22.0

22.65

1.62

1.67

0.107

17.0

90.60

0.811

0.83

0.429

34.0

DRQ73-330-R

33.0

34.41

1.31

1.35

0.166

21.0

137.6

0.653

0.68

0.665

42.0

DRQ73-470-R

47.0

48.62

1.08

1.14

0.241

24.9

194.5

0.542

0.57

0.965

49.8

DRQ73-680-R

68.0

68.91

0.89

0.96

0.358

29.7

275.6

0.444

0.48

1.43

59.4

DRQ73-820-R

82.0

80.37

0.86

0.89

0.384

32.1

321.5

0.430

0.44

1.54

64.2

DRQ73-101-R

100

101.4

0.73

0.79

0.527

36.0

405.6

0.367

0.39

2.11

72.0

1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc

Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)

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 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 100KHz 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-R

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 compliant