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) 12 4 3 features high impedance value current rating up to 400 ma rohs compliant* and halogen free** applications noise suppression personal computers display panels srf2012a series - common mode chip inductors * rohs directive 2002/95/ec jan 27, 2003 including annex. ** bourns follows the prevailing de? nition 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. speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications. re ow soldering .... 230 ?; 50 sec max. operating temperature ............................... -40 ? to +125 ? (temperature rise included) storage temperature ............................... -40 ? to +125 ? resistance to soldering heat .......................... 260 ?, 10 sec. max. temperature rise ......30 ? max. at idc electrical speci cations part number impedance @ 100 mhz rated voltage (vdc) withstanding voltage (dc) insulation resistance (m ) min. dcr max. ( ) idc max. (ma) ( ) tolerance (%) srf2012-670ya 67 ?5 50 125 10 0.25 400 srf2012-900ya 90 ?5 50 125 10 0.3 400 srf2012-121ya 120 ?5 50 125 10 0.3 400 srf2012-161ya 160 ?5 50 125 10 0.35 350 srf2012-181ya 180 ?5 50 125 10 0.35 350 srf2012-201ya 200 ?5 50 125 10 0.4 300 srf2012-221ya 220 ?5 50 125 10 0.4 300 srf2012-261ya 260 ?5 50 125 10 0.4 300 SRF2012-361YA 360 ?5 50 125 10 0.45 300 general speci cations 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 suf x *rohs compliant 1 4 2 3 soldering pro le temperature (c) 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) 120 - 150 seconds 60 - 90 seconds 260c peak 190c 150c 220c ramp down 6c/second maximum <1> 255c <1> maximum of 10 seconds between +255c and +260c ramp up 3c/second maximum 10 seconds minimum rev. 02/22/05 1.25 (.049) 0.45 (.018) 1.1 (.043) 2.6 (.102) 12 4 3 asia-paci c: 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) recommended layout
1000 100 10 1 0.1 1 10 100 frequency (mhz) srf2012-670ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 1 10 100 frequency (mhz) srf2012-121ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 110100 frequency (mhz) srf2012-900ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 110100 frequency (mhz) srf2012-161ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 110100 frequency (mhz) srf2012-201ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 1 10 100 frequency (mhz) srf2012-181ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 1 10 100 frequency (mhz) srf2012-221ya impedance (ohms) 1000 10000 common mode normal mode 1000 100 10 1 0.1 110100 frequency (mhz) srf2012-261ya impedance (ohms) 1000 10000 common mode normal mode speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. srf2012a series - common mode chip inductors typical impedance vs. frequency curves
user direction of feed 1.45 ?0.1 (.057 ?.004) 0.22 ?0.05 (.009 ?.002) 2.35 ?0.1 (.093 ?.004) 1.5 + 0.1 (.059 + .004) dia. 1.1 + 0.1 (.043 + .004) dia. a a 1.50 ?0.1 (.059 ?.004) section a-a 8.0 ?0.1 (.315 ?.004) 1.75 ?0.1 (.069 ?.004) 3.5 ?0.05 (.138 ?.002) 4.0 ?0.1 (.157 ?.004) 4.0 ?0.1 (.157 ?.004) 2.0 ?0.05 (.079 ?.002) srf0504 series - line filter packaging speci cations dimensions: mm (inches) qty: 2000 pcs. per reel 06/11 speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. srf2012a series - common mode chip inductors 9.0 ?0.5 (.354 ?.020) 60 ?2 (2.362 ?.079) 178 ?2 (7.008 ?.079) 13.5 ?0.5 (.531 ?.020) dia. 120 1.9 (.075) r 13.5 ?0.5 (.531 ?.020) r 20.5 (.807) 0.5 (.020) r 10.5 (.413) r 1000 10000 100 10 1 0.1 1 10 100 frequency (mhz) SRF2012-361YA impedance (ohms) 1000 10000 common mode normal mode typical impedance vs. frequency curves (continued)
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