*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

SRF2012 Series - Common Mode Chip Inductors

Features

■

High impedance value

■

Current rating up to 450 mA

■

RoHS compliant*

Applications

■

Noise suppression

■

Personal computers

■

Display panels

Electrical Specifications

Product Dimensions

0.40

(.016)

TYP.

0.40

(.016)

TYP.

TYP.

0.45

(.018)

TYP.

0.45

(.018)

1.25 ± 0.2

(.049 ± .008)

1.25 ± 0.2

(.049 ± .008)

2.05 ± 0.2

(.081 ± .008)

1

4

2

3

General Specifications

Reflow soldering.....230 °C; 50 sec max.

Operating Temperature ..-55 °C to +125 °C

(Temperature rise included)

Storage Temperature..-55 °C to +125 °C

Resistance to Soldering Heat

............................260 °C, 10 sec. max.

Materials

Core...............................................Ferrite

Wire .............................Enameled copper

Terminal.....................................Ag/Ni/Sn

Packaging...................2000 pcs. per reel

Recommended Layout

REF.

0.90

(.035)

REF.

0.35

(.014)

REF.

0.35

(.014)

REF.

0.80

(.032)

REF.

0.50

(.020)

REF.

0.90

(.035)

DIMENSIONS:

MM

(INCHES)

Impedance

Rated

Withstanding

Insulation

DCR

IDC

@ 100 MHz

Voltage

Voltage

Resistance

Max.

Max.

Bourns Part No.

(

Ω

Ω)

Tolerance (%)

(DC)

(DC)

(M

Ω

Ω)(Ω)(mA)

SRF2012-300Y

30

±25

50

125

10

0.20

450

SRF2012-670Y

67

±25

50

125

10

0.25

400

SRF2012-900Y

90

±25

50

125

10

0.35

330

SRF2012-121Y

120

±25

50

125

10

0.30

370

SRF2012-161Y

160

±25

50

125

10

0.40

300

SRF2012-181Y

180

±25

50

125

10

0.35

330

SRF2012-201Y

200

±25

50

125

10

0.35

330

SRF2012-221Y

220

±25

50

125

10

0.35

310

SRF2012-261Y

260

±25

50

125

10

0.40

300

SRF2012-301Y

300

±25

50

125

10

0.40

290

SRF2012-361Y

360

±25

50

125

10

0.45

280

SRF2012-371Y

370

±25

50

125

10

0.45

280

SRF2012-501Y

500

±25

50

125

10

0.55

170

SRF2012-671Y

670

±25

50

125

10

0.60

140

SRF2012-901Y

900

±25

50

125

10

0.60

80

Common Mode

Normal Mode

Z

(f)

1 MHz 3 MHz 10 MHz 30 MHz 100 MHz 300 MHz 1 GHz

1 MHz 3 MHz 10 MHz 30 MHz 100 MHz 300 MHz 1 GHz

300

0.64

1.94

5.99

14.34

31.33

53.67

93.89

0.200

0.240

0.470

1.180

3.490

9.850

34.370

670

1.45

4.42

13.62

32.45

70.17

117.65

201.20

0.250

0.290

0.550

1.340

3.830

10.560 34.260

900

1.04

3.09

10.14

28.96

90.46

254.50

491.35

0.280

0.330

0.610

1.520

4.150

11.260 38.760

121

2.64

7.96

23.80

56.67

126.11

218.67

417.23

0.330

0.380

0.670

1.640

4.710

13.030 43.460

161

1.79

5.35

17.50

49.70

153.36

327.38

574.77

0.390

0.440

0.760

1.850

5.290

14.560 53.660

171

3.87

11.68

35.09

82.74

180.25

314.98

587.53

0.400

0.450

0.750

1.800

5.050

13.770 48.810

261

5.33

15.85

46.54

109.83

263.01

479.42

895.05

0.450

0.500

0.850

2.040

5.770

15.820 62.080

371

4.16

12.42

40.38

113.88

369.14

802.72 1135.60 0.510

0.560

0.890

2.070

5.760

15.600 72.730

Impedance vs. Frequency

1000

CH1

T & B 3.5 k

Ω, 1 Ω

Z

+

IP

100

10

1

0.1

Common Mode

Normal Mode

1

0

100

1000

261

371

121

670

300

900

181

161

371

261

181

161

121

900

670

300