PL IA NT CO M *R oH S Features Applications High impedance value Noise suppression Current rating up to 400 mA Personal computers RoHS compliant* and halogen free** Display panels SRF2012A Series - Common Mode Chip Inductors Electrical Specifications General Specifications Impedance @ 100 MHz Rated Voltage (VDC) Withstanding Voltage (DC) Insulation Resistance (M) Min. DCR Max. () IDC Max. (mA) Part Number () 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 Soldering Profile 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 Materials Core ..............................................Ferrite Wire ........................... Enameled copper Terminal ................................... Ag/Ni/Sn Packaging.......2000 pcs. per 7-inch reel Product Dimensions 2.0 0.2 (.079 .008) 275 <1> Maximum of 10 seconds between +255C and +260C 260C peak <1> 255C 225 220C Temperature (C) 190C Ramp Down 6C/second maximum 60 - 90 seconds 175 150C 0.15 0.1 (.006 .004) 125 120 - 150 seconds 1 2 4 3 0.46 0.1 ( .018 .004) 10 seconds minimum 75 Ramp Up 3C/second maximum 25 0 50 100 150 200 Time (seconds) How to Order 250 300 Rev. 02/22/05 0.55 0.1 ( .022 .004) Schematic SRF2012 - 201 Y A 1 0.55 0.1 ( .022 .004) 2 Model 1.2 0.2 (.047 .008) Value Code (see table) Tolerance Code 0.46 0.1 ( .018 .004) 4 3 Model Suffix 1.2 0.2 (.047 .008) Recommended Layout 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 * 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. 1 2 4 3 1.1 (.043) 1.25 (.049) 0.45 (.018) 2.6 (.102) DIMENSIONS: MM (INCHES) SRF2012A Series - Common Mode Chip Inductors Typical Impedance vs. Frequency Curves SRF2012-670YA SRF2012-900YA 1000 Impedance (Ohms) Impedance (Ohms) 1000 100 Common Mode 10 Normal Mode 1 100 Common Mode 10 Normal Mode 1 0.1 0.1 1 10 100 1000 1 10000 10 100 SRF2012-121YA 100 Common Mode 10 Normal Mode 1 Common Mode 100 10 Normal Mode 1 0.1 0.1 1 10 100 1000 1 10000 10 100 SRF2012-181YA Common Mode 100 10000 SRF2012-201YA 1000 Impedance (Ohms) Impedance (Ohms) 1000 1000 Frequency (MHz) Frequency (MHz) 10 Normal Mode 1 Common Mode 100 10 Normal Mode 1 0.1 0.1 1 10 100 1000 1 10000 10 SRF2012-221YA 100 1000 10000 SRF2012-261YA 1000 Impedance (Ohms) 1000 100 Frequency (MHz) Frequency (MHz) Impedance (Ohms) 10000 SRF2012-161YA 1000 Impedance (Ohms) Impedance (Ohms) 1000 1000 Frequency (MHz) Frequency (MHz) Common Mode 10 Normal Mode 1 Common Mode 100 10 Normal Mode 1 0.1 0.1 1 10 100 Frequency (MHz) 1000 10000 1 10 100 1000 10000 Frequency (MHz) Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. SRF0504 Series - Line Filter Mode Chip Inductors SRF2012A Series - Common Typical Impedance vs. Frequency Curves (Continued) SRF2012-361YA Impedance (Ohms) 10000 1000 Common Mode 100 10 Normal Mode 1 0.1 1 10 1000 100 10000 Frequency (MHz) Packaging Specifications 9.0 0.5 (.354 .020) 13.5 0.5 (.531 .020) DIA. 20.5 (.807) 13.5 0.5 R (.531 .020) 60 2 (2.362 .079) R 10.5 (.413) 0.5 R (.020) R 1.9 (.075) 178 2 (7.008 .079) 120 2.0 0.05 (.079 .002) 4.0 0.1 (.157 .004) 1.75 0.1 (.069 .004) 1.5 + 0.1 DIA. (.059 + .004) A 0.22 0.05 (.009 .002) 8.0 0.1 (.315 .004) 3.5 0.05 (.138 .002) 2.35 0.1 (.093 .004) 4.0 0.1 (.157 .004) 1.45 0.1 (.057 .004) 1.1 + 0.1 DIA. (.043 + .004) A 1.50 0.1 (.059 .004) SECTION A-A DIMENSIONS: USER DIRECTION OF FEED QTY: 2000 PCS. PER REEL 06/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. MM (INCHES)