*R *RoHS oH C S OM CO P M LIA PL N IA T NT Features Applications Shielded construction Input/output of DC/DC converters Mounting height of 7.0 mm max. Power supplies for: * Portable communications equipment * Camcorders * LCD TVs * Car audio systems Current rating up to 41 A RoHS compliant* SRP1270 Series - Shielded Power Inductors Electrical Specifications Bourns Part No. Inductance L (H) 20 % I rms (A) I sat (A) DCR (m) max. SRF (MHz) typ. SRP1270-R32M 0.32 46 65 0.9 95 SRP1270-R47M 0.47 41 65 1.2 85 SRP1270-R68M 0.68 35 60 1.6 65 SRP1270-1R0M 1.0 32 50 2.1 45 SRP1270-1R5M 1.5 27 48 2.6 31 SRP1270-1R8M 1.8 24 41 3.2 31 SRP1270-2R2M 2.2 22 40 4.2 25 SRP1270-3R3M 3.3 18 35 6.6 20 SRP1270-4R7M 4.7 15 30 11.2 15 SRP1270-5R6M 5.6 14 26.5 10.0 13 SRP1270-6R8M 6.8 12 21 14.0 12 SRP1270-8R2M 8.2 11 17 15.5 11 SRP1270-100M 10.0 10 16 16.8 10 General Specifications Test Voltage.....................................1.0 V Test Frequency ..........................100 KHz 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 for 10 sec. Materials Core...................................................Iron Wire .............................Enameled copper Adhesive ...............................Epoxy resin Terminal.....................................Ag/Ni/Sn Rated Current.......Ind. drops 20 % at I sat Temperature Rise..........40 C at rated I rms Packaging .......400 pcs. per 13-inch reel Product Dimensions Temperature (C) 275 <1> Maximum of 10 seconds between +255 C and +260 C 225 MAX. 7.0 (.276) 13.7 MAX. (0.539) 12.9 MAX. (0.508) Soldering Profile 6.5 (.256) MAX. 260 C peak <1> 255 C 13.7 (0.539) MAX. 220 C 190C 60 seconds maximum 175 Ramp Down 5 C/second 1R2 150 C 125 12.9 MAX. (0.508) 120-150 seconds 10 seconds minimum 75 3.0 0.5 (0.118 0.020) Ramp Up 4 C/second maximum 25 0 50 100 150 200 250 300 Time (Seconds) Electrical Schematic 2.5 0.5 (0.098 0.020) Recommended Layout 15.0 (0.591) 4.5 (.177) 7.0 (.276) DIMENSIONS: *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. MM (INCHES) SRP1270 Series - Shielded Power Inductors 40 0.1 20 0 39 52 0 0 13 60 0.6 0.4 0.2 0 30 40 50 40 30 20 10 0 50 100 90 80 70 60 1.5 1.0 0.5 0 0 8 16 24 32 100 40 60 50 1.0 40 30 20 10 0 40 0.5 0 10 20 30 Inductance (H) 80 70 1.5 Temperature Rise (C) Inductance (H) 90 2.0 3.2 2.4 1.6 0.8 0 0 7 7.2 80 5.4 60 3.6 40 1.8 20 0 0 5.3 10.6 15.9 21.2 9.0 6.0 3.0 0 8 50 40 30 20 10 0 48 3.0 8.4 12.6 100 90 80 70 60 1.5 32.8 50 40 30 20 10 0 41 24 100 90 80 70 60 50 40 30 20 10 0 30 1.0 0.5 0 0 8.2 16.4 24.6 100 90 80 70 60 50 40 30 20 10 0 35 SRP1270-4R7M 6.0 5.0 4.0 3.0 2.0 1.0 0 0 6 12 18 16.8 100 90 80 70 60 50 40 30 20 10 0 21 SRP1270-8R2M 14.0 100 11.2 80 8.4 60 5.6 40 2.8 20 0 0 3.2 6.4 9.6 12.8 0 16 DC Current (A) 12 100 90 80 70 60 50 40 30 20 10 0 16 Temperature Rise (C) Inductance (H) 12.0 4 6.0 4.2 10 0 60 DC Current (A) 9.0 0 50 DC Current (A) SRP1270-100M 0 28 0 0 26.5 DC Current (A) 15.0 21 SRP1270-6R8M 12.0 Temperature Rise (C) Inductance (H) 100 Inductance (H) SRP1270-5R6M 9.0 14 40 2.0 DC Current (A) DC Current (A) 30 DC Current (A) SRP1270-3R3M 4.0 20 SRP1270-1R8M 2.5 DC Current (A) SRP1270-2R2M 0 10 DC Current (A) 2.0 DC Current (A) 2.5 0 Inductance (H) 20 0 Inductance (H) 0.8 50 40 30 20 0.4 0.2 Inductance (H) Inductance (H) 1.0 10 52 SRP1270-1R5M 2.5 Inductance (H) 100 90 80 70 Temperature Rise (C) SRP1270-1R0M 0 39 0.6 DC Current (A) DC Current (A) 1.2 26 10 0 65 Temperature Rise (C) 26 0.1 0 65 Temperature Rise (C) 13 0.2 Temperature Rise (C) 0 50 40 30 20 Temperature Rise (C) 0.2 0.4 0.3 100 90 80 70 60 0.8 Temperature Rise (C) 60 0.5 SRP1270-R68M 1.0 Temperature Rise (C) 0.3 100 90 80 70 60 Inductance (H) 80 Inductance (H) 0.4 SRP1270-R47M 0.6 Temperature Rise (C) Inductance (H) 100 Temperature Rise (C) SRP1270-R32M 0.5 Temperature Rise (C) L vs. I Charts DC Current (A) Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. SRP1270 Series - Shielded Power Inductors Packaging Specifications 330.0 (13.00) DIA. 2.0 0.5 (.079 .020) THICKNESS 0.10 (.004) MAX. 13.5 0.5 (0.53 .020) DIA. EMBOSSED CAVITY 100.0 2.0 (3.94 .079) 13.5 0.5 DIA. (.53 .020) EMBOSSED CARRIER 24.0 0.5 (0.95 0.020) 0.50 0.05 (0.020 0.002) 2.0 0.1 (0.079 0.004) 4.0 0.1 (0.157 0.004) 1.5 0.1 (0.059 0.004) DIA. 14.2 0.1 (0.559 0.004) 6.9 0.1 (0.272 0.004) 1.75 0.1 (.069 0.004) 2.7 0.3 (.106 0.012) 13.2 0.1 (0.520 0.004) 0.15 DIA. (0.0006) DIMENSIONS: REV. 08/09 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. MM (INCHES) 20.5 0.1 (0.807 0.004) 24.0 0.3 (0.95 0.012)