PL IA NT CO M *R oH S Features Applications Shielded construction Input/output of DC/DC converters Unit height of 5.5 mm Power supplies for: * Portable communications equipment * Camcorders * LCD TVs * Car audio systems Inductance range: 0.36 H to 8.8 H Current up to 28 A RoHS compliant* SRP1055 Series - Shielded Power Inductors Electrical Specifications Inductance L (H) Bourns Part No. SRP1055-R36Y SRP1055-R80M SRP1055-1R4M SRP1055-2R2M SRP1055-3R2M SRP1055-4R3M SRP1055-5R7M SRP1055-7R2M SRP1055-8R8M 0.36 0.80 1.40 2.20 3.20 4.30 5.70 7.20 8.80 30 20 20 20 20 20 20 20 20 % % % % % % % % % I rms (A) I sat (A) DCR (m) max. 28.0 20.0 16.0 12.0 11.0 10.0 7.6 7.0 6.0 26.0 18.0 14.0 10.0 9.0 8.0 7.0 6.2 5.6 1.7 2.5 3.2 5.8 7.2 8.5 13.2 15.5 17.2 General Specifications Test Voltage........................................1 V Test Frequency ..........................100 KHz Reflow Soldering .....230 C; 50 sec max. Operating Temperature ..-55 C to +150 C (Temperature rise included) Storage Temperature..-55 C to +150 C Resistance to Soldering Heat ..............................+260 C for 10 sec. Materials Core .........................................Ferrite ER Wire .............................Enameled copper Terminal.....................................Cu/Ni/Sn Rated Current.......Ind. drops 25 % at I sat Temperature Rise..........40 C at rated I rms Packaging .......300 pcs. per 13-inch reel Inductance vs. DC Superposition Characteristics 10.0 Product Dimensions 8R8 9.35 0.30 (0.368 0.012) 8.0 1R4 Inductance (H) 7R2 6.0 5.50 0.30 (0.216 0.012) 11.00 0.30 (0.422 0.012) 5R7 2.10 (0.083) TYP. 4R3 4.0 3R2 TYP. 2.0 TYP. (0.079) 1.00 (0.039) 6.0 TYP. (0.236) 1.50 TYP. (0.059) 2.0 0 2.5 5 7.5 10 DC Current (A) Inductance (H) 3.0 Recommended Layout 2R2 2.0 1R4 1.0 R36 0.0 10 20 DC Current (A) Electrical Schematic 3.0 (0.118) 6.0 (0.236) R80 0 5.8 (.228) 3.0 (0.118) 30 40 3.0 (0.118) 3.0 (0.118) 2.8 (0.110) 2.0 (0.079) 1.4 (0.055) 10.0 (0.394) DIMENSIONS: MM (INCHES) *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. SRP1055 Series - Shielded Power Inductors Soldering Profile Temperature (C) 275 260 C peak <1> Maximum of 10 seconds between +255 C and +260 C 225 <1> 255 C 220 C 190C Ramp Down 5 C/second 60 seconds maximum 175 150 C 125 120-150 seconds 10 seconds minimum 75 Ramp Up 4 C/second maximum 25 0 50 100 150 200 250 300 Time (Seconds) Packaging Specifications 2.0 0.5 (.079 .020) 330.0 (13.00) DIA. THICKNESS 0.10 (.004) MAX. 13.0 0.5 (.512 .020) DIA. 21.0 0.8 (.827 .031) EMBOSSED CAVITY 50.0 - 0 (1.969 -0) 13.0 0.5 DIA. (.512 .020) EMBOSSED CARRIER 26.0 + 0 (1.024 +0) 16.0 (0.629) 4.0 (0.157) END 1R4 1R4 1R4 NO COMPONENT 160 (6.299) 1R4 NO COMPONENT 400 (15.748) COMPONENTS MIN. MIN. USER DIRECTION OF FEED DIMENSIONS: REV. 05/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. START MM (INCHES)