T PL IA N M CO *R oH S Features Applications ■ Semi-shielded construction ■ DC/DC converters ■ Miniature size ■ Notebook computers ■ Low profile: 1.2 mm ■ Digital video cameras ■ Inductance range: 0.24 to 2.2 µH ■ HDDs ■ Rated current up to 4.7 A ■ Cellphones ■ RoHS compliant* and halogen free** ■ Televisions, LCD displays SRN2512 Series - Semi-shielded Power Inductors Electrical Specifications @ 25 °C Inductance @ 1 MHz / 0.1 V General Specifications Bourns Part No. L (μH) Tol. % Q (Ref.) Test Freq. (MHz) SRN2512-R24M 0.24 20 7 1 330 0.024 4.7 8.0 SRN2512-R33M 0.33 20 7 1 300 0.032 4.5 5.7 SRN2512-R47M 0.47 20 8 1 190 0.032 4.4 5.5 SRN2512-R68M 0.68 20 9 1 140 0.043 3.6 4.5 SRN2512-1R0M 1.0 20 10 1 120 0.057 3.5 3.9 SRN2512-1R5M 1.5 20 10 1 90 0.096 2.5 3.0 SRN2512-2R2M 2.2 20 11 1 80 0.102 2.3 2.7 SRF (MHz) Min. DCR (Ω) Max. Irms (A) Isat (A) Soldering Profile Peak Temperature260 ഒ max. Max. Peak Temperature 260 ഒ40 sec. max. Max. Time Above 217 ഒ: 60~150 sec. max. Operating Temperature ................................. -55 °C to +125 °C (Temperature rise included) Storage Temperature .... -40 °C to +85 °C Resistance to Solder Heat ...............................+260 °C for 40 sec. Temperature Rise .....40 °C at rated Irms Rated Current ............ Inductance drops 30 % at Isat Materials Core ..............................................Ferrite Wire ............................Enameled copper Terminal Finish ...................................Sn Coating .................Magnetic epoxy resin Packaging ....... 2000 pcs. per 7-inch reel Product Dimensions Preheating Soldering Natural Cooling 2.5 +0.2/-0.1 (.098 +.008/-.004) 20~40 Sec. Temperature (°C) Peak Temperature (260 °C, 40 Sec. Max.) 200 °C 150°C 217 °C 2.0 +0.35/-0.05 (.079 +.014/-.002) 60~150 Sec. 60~180 Sec. 480 Sec. Max. 25 Time (Seconds) Reflow Times: 3 Times Max. Electrical Schematic How to Order SRN2512 - R24M Model 0.85 (.033) REF. 0.85 (.033) REF. 0.8 (.031) REF. Value Code (see table) Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211 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 and RoHS Recast 2011/65/EU June 8, 2011. **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. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 1.2 (.047) MAX. Recommended Layout 2.9 (.114) 0.8 (.031) DIMENSIONS: 2.4 (.094) MM (INCHES) SRF0504 Filter SRN2512 Series Series -- Line Semi-shielded Power Inductors L vs. IDC SRN2512-R33M SRN2512-R24M 0.2 0.1 0.8 0.4 Inductance (μH) Inductance (μH) Inductance (μH) 0.3 0.3 0.2 0.1 0 0 0 2 4 6 0 8 SRN2512-R68M 4 6 0 0.4 0.2 0 5 6 8 SRN2512-1R5M 2.5 1.5 1.0 0.5 0 4 4 DC Current(A) Inductance (μH) Inductance (μH) 0.6 3 2 SRN2512-1R0M 0.8 2 0.2 8 2.0 1 0.4 DC Current(A) 1.0 0 0.6 0 2 DC Current(A) Inductance (μH) SRN2512-R47M 0.5 0.4 2.0 1.5 1.0 0.5 0 0 DC Current(A) 1 2 3 4 0 DC Current(A) 0.6 1.2 1.8 2.4 3.0 DC Current(A) SRN2512-2R2M Inductance (μH) 4 3 2 1 0 0 0.5 1.0 1.5 2.0 2.5 DC Current(A) Packaging Specifications 8.4 ± 1.0 (.331 ± .004) 4.0 ± 0.1 (.157 ± .004) 2.0 ± 0.05 (.079 ± .002) 0.23 ± 0.05 (.009 ± .002) 2.85 ± 0.1 (.112 ± .004) 8.0 ± 0.1 (.315 ± .004) 13.0 ± 0.8 (.512 ± .031) 50.0 (1.969) MIN. 178 ± 2.0 (7.008 ± .079) 1.40 ± 0.1 (.055 ± .004) 4.0 ± 0.1 (.157 ± .004) USER DIRECTION OF FEED 2.45 ± 0.1 (.096 ± .004) QTY: 2000 PCS. PER REEL DIMENSIONS: MM (INCHES) REV. 12/14 Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.