0.46 ± 0.1

( .018 ± .004)

0.55 ± 0.1

( .022 ± .004)

0.55 ± 0.1

( .022 ± .004)

0.46 ± 0.1

( .018 ± .004)

1.2 ± 0.2

(.047 ± .008)

0.15 ± 0.1

(.006 ± .004)

1.2 ± 0.2

(.047 ± .008)

2.0 ± 0.2

(.079 ± .008)

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Features

Applications

SRF2012A Series - Common Mode Chip Inductors

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

** Bourns follows the prevailing definition of “halogen free” in the industry. Bourns considers a product to be

“halogen free” if (a) the Bromine (Br ) content is 900 ppm or less; (b) the Chlorine ( Cl ) content is 900 ppm or less;

and (c) the total Bromine (Br) and Chlorine ( Cl ) content is 1500 ppm or less.

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

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

Operating Temperature

............................... -40 °C to +125 °C

(Temperature rise included)

Storage Temperature

............................... -40 °C to +125 °C

Resistance to Soldering Heat

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

Temperature Rise ......30 °C max. at IDC

Electrical Specifications

Part Number

Impedance

@ 100 MHz

Rated

Voltage

(VDC)

Withstanding

Voltage

(DC)

Insulation

Resistance

(M

Ω) Min.

DCR

Max.

(

Ω)

IDC

Max.

(mA)

(

Ω)

Tolerance

(%)

SRF2012-670YA

67

±25

50

125

10

0.25

400

SRF2012-900YA

90

±25

50

125

10

0.3

400

SRF2012-121YA

120

±25

50

125

10

0.3

400

SRF2012-161YA

160

±25

50

125

10

0.35

350

SRF2012-181YA

180

±25

50

125

10

0.35

350

SRF2012-201YA

200

±25

50

125

10

0.4

300

SRF2012-221YA

220

±25

50

125

10

0.4

300

SRF2012-261YA

260

±25

50

125

10

0.4

300

SRF2012-361YA

360

±25

50

125

10

0.45

300

General Specifications

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

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

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

Packaging.......2000 pcs. per 7-inch reel

Materials

Product Dimensions

Schematic

How to Order

SRF2012 - 201 Y A

Model

Value Code (see table)

Tolerance Code

Model Suffix

1

4

2

3

Soldering Profile

25

75

125

175

225

275

0

50

100

150

200

250

300

Time (seconds)

120 - 150 seconds

60 - 90

seconds

260°C peak

190°C

150°C

220°C

Ramp Down

6°C/second

maximum

<1> 255°C

<1> Maximum of 10 seconds between

+255°C and +260°C

Ramp Up

3°C/second maximum

10 seconds minimum

Rev. 02/22/05

1.25

(.049)

0.45

(.018)

1.1

(.043)

2.6

(.102)

12

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3

Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116

Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510

The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700

www.bourns.com

DIMENSIONS:

MM

(INCHES)

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