Features This series is currently available, but not recommended for new designs. The newer SRP1038A series is recommended. n Shielded construction n Unit height of 4.2 mm 2R2 5 172 n Inductance range: 0.15 to 15 H n Current up to 34 A n RoHS compliant* SRP1040 Series - Shielded Power Inductors 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. Electrical Specifications Bourns Part No. Inductance L (H) 20 % I rms (A) I sat (A) DCR (m) Max. SRP1040-R20M 0.20 32 40 1.0 SRP1040-R15M 0.15 SRP1040-R36M 34 0.36 SRP1040-R39M 28 0.39 SRP1040-R47M SRP1040-R56M SRP1040-R68M SRP1040-R75M SRP1040-1R0M SRP1040-1R2M 1.2 SRP1040-1R5M SRP1040-1R7M SRP1040-2R2M SRP1040-2R5M 3.9 9.0 15 12 5.6 7.0 10 14 8.0 6.8 24 9.0 35 8.2 5.0 8.0 SRP1040-150M 15 5.0 7.0 5.0 2R2 1725 10.5 (0.413) MAX. 16 11 SRP1040-8R2M 10 14 12 4.2 (.165) MAX. 4.0 (.157) MAX. 11.8 MAX. (0.465) 10.7 0.5 (0.421 0.020) 10 13 6.5 Product Dimensions 8.6 8.7 4.7 SRP1040-100M 7.5 17 14 SRP1040-4R7M SRP1040-6R8M 12 11.5 3.3 SRP1040-5R6M 7.5 18 2.5 SRP1040-3R3M SRP1040-3R9M 4.7 20 15 2.2 3.5 24 15 1.7 3.0 28 18 1.5 2.5 30 20 Materials Core...................................................Iron Wire.............................Enameled copper Terminal.........................................Cu/Sn Rated Current......Ind. drops 20 % at Isat Temperature Rise......40 C at rated Irms Packaging........ 900 pcs. per 13-inch reel 2.4 28 21 1.0 1.9 32 22 0.80 1.9 36 23 0.75 SRP1040-R80M 1.6 32 25 0.68 1.4 38 23 0.56 1.4 32 26 0.50 1.3 40 24 0.47 SRP1040-R50M 40 33 57 10.0 0.5 (0.394 0.020) Soldering Profile <1> Maximum of 10 seconds between +255 C and +260 C 225 190C 175 220 C 60 seconds maximum Ramp Down 5 C/second 150 C 125 120-150 seconds 75 25 275 260 C peak <1> 255 C Temperature (C) Temperature (C) 275 10 seconds minimum 50 100 225 150 200 250 300 175 170 C 2.2 0.5 (0.087 0.020) 150 C 125 25 <1> 245 C 2.9 0.5 (0.114 0.020) Recommended Layout Ramp Up 12.4 4 C/second maximum (0.488) 0 50 100 4.5 (.177) 1.5 (.060) DIMENSIONS: WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov 60 seconds maximum 4.5 (.177) 2.5 150 (.099) 5.4 (.213) MM (INCHES) Electrical Schematic R 5 10 seconds minimum Time (Seconds) Time (Seconds) *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 183 C 120 -150 seconds 75 Ramp Up 4 C/second maximum 0 <1> 5 seconds maximum at +245 C 200 250 SRP1040 Series - Shielded Power Inductors L vs. I Charts 27 36 10 0 40 DC Current (A) 40 0.12 20 22.8 0 38 30.4 0.75 0.60 0.45 50 40 30 0.30 0.15 0 20 10 0 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 SRP1040-R80M 0.6 60 0.5 0.4 50 40 0.3 30 0.2 20 0.1 0 10 0 32 20 24 28 Inductance (H) 70 Temperature Rise (C) Inductance (H) 0.7 SRP1040-1R5M 2.0 1.6 1.2 0.8 50 40 30 2 4 6 8 10 12 14 16 18 20 20 10 0 22 Inductance (H) 70 60 16 20 24 28 32 36 SRP1040-R50M 0.56 80 0.7 0.6 70 60 0.42 60 0.5 0.4 0.3 50 40 30 0.28 40 0.2 0.1 0 20 10 0 40 0.14 20 0 4 8 12 16 20 24 28 32 36 SRP1040-R68M 0 0 7.2 14.4 DC Current (A) 80 0.9 60 0.6 40 0.4 0.2 0 20 10 0 33 9 12 15 18 21 24 27 30 SRP1040-R75M 1.2 50 40 30 6 0.3 0 100 90 80 1.4 1.2 70 60 1.0 0.8 0.6 50 40 30 0.4 0.2 0 20 10 0 30 6 9 12 15 18 21 24 27 20 0 6.2 12.4 SRP1040-1R7M 1.8 60 1.2 40 0.6 20 0 4 8 12 24.8 SRP1040-1R2M 3 100 2.4 80 1.8 60 1.2 40 0.6 0 20 0 4.4 8.8 13.2 16 SRP1040-2R2M 4.0 100 80 DC Current (A) 18.6 0 31 17.6 0 22 DC Current (A) 2.4 0 100 DC Current (A) SRP1040-1R0M 3 0 36 80 1.0 0.8 0.6 3 28.8 1.5 70 60 0 21.6 100 100 90 1.4 1.2 3 Temperature Rise (C) Inductance (H) 80 0 12 DC Current (A) DC Current (A) 100 90 2.8 2.4 0.4 0 8 80 DC Current (A) 4.0 3.6 3.2 4 0.8 2.0 1.8 1.6 100 90 80 16 0 DC Current (A) 0.9 0.8 12 36 0.7 DC Current (A) 8 32 Inductance (H) 70 60 4 28 SRP1040-R47M 2.0 1.8 1.6 Inductance (H) 80 1.05 0.90 Temperature Rise (C) Inductance (H) 100 90 1.20 0 24 DC Current (A) SRP1040-R56M 1.0 20 100 90 DC Current (A) 1.50 1.35 16 Inductance (H) 15.2 12 Inductance (H) 7.6 8 Inductance (H) 60 0.24 Inductance (H) 0.36 Temperature Rise (C) Inductance (H) 80 0 4 1.0 0.9 100 0.48 0 0 DC Current (A) SRP1040-R39M 0.6 20 10 0 40 20 0 0 45 Temperature Rise (C) 18 0.2 0.1 0 30 0.05 Temperature Rise (C) 9 50 40 30 40 Temperature Rise (C) 0 0.5 0.4 0.3 50 0.1 Temperature Rise (C) 0 70 60 Temperature Rise (C) 20 80 0.7 0.6 60 Temperature Rise (C) 0.06 0.8 70 0.15 100 90 Temperature Rise (C) 40 80 Temperature Rise (C) 0.12 1.0 0.9 90 3.2 2.8 2.4 80 2.0 1.6 1.2 0.8 50 40 30 0.4 0 0 20 100 3.6 70 60 0 2 4 6 8 20 10 0 10 12 14 16 18 20 22 24 Temperature Rise (C) 60 SRP1040-R36M 90 Inductance (H) 0.18 100 0.2 Inductance (H) 80 Temperature Rise (C) Inductance (H) 0.24 SRP1040-R20M 0.25 100 Temperature Rise (C) SRP1040-R15M 0.3 DC Current (A) DC Current (A) 80 70 4.8 80 e (C) 90 6.4 5.6 H) 7.2 e (C) 80 H) H) 3.2 e (C) Specifications are subject to change without notice. Users should verifySRP1040-2R5M actual device performance in their specific applications. SRP1040-3R9M SRP1040-3R3M 4.0 6.0 100 8.0 legal disclaimers as set forth on the last100 The products described herein and this document100 are subject to specific page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 28 3 6 9 12 SRP1040-1R5M 2.0 1.6 1.2 0.8 50 40 30 8 10 12 14 16 18 20 1.8 60 1.2 40 0.6 20 SRP1040-2R5M 100 80 2.4 60 1.6 40 0.8 20 0 4 8 0 4 8 12 80 4.0 3.2 2.4 1.6 50 40 30 70 60 4 6 8 10 SRP1040-4R7M 14 12 20 10 0 16 SRP1040-5R6M 90 13.5 90 6.4 5.6 4.8 80 12.0 10.5 9.0 80 4.0 3.2 2.4 1.6 50 40 30 7.5 6.0 4.5 3.0 50 40 30 2 4 6 8 10 12 20 10 0 16 Inductance (H) 7.2 0 SRP1040-8R2M 1.5 0 100 0 1 2 3 4 80 7.5 6.0 4.5 3.0 50 40 30 70 60 2 3 4 5 6 7 8 20 10 0 9 2 4 6 21 60 50 40 14 30 7 20 0 10 0 6.0 4.8 8 SRP1040-3R9M 4.8 80 3.6 60 2.4 40 1.2 20 0 3 6 9 12 SRP1040-6R8M 12 70 60 6.0 50 40 4.5 30 3.0 20 1 2 3 4 5 6 7 8 80 8 70 6 50 40 60 4 30 20 10 2 0 0 4 6 0 16 12 SRP1040-150M 25 100 10 0 9 90 80 20 70 15 60 10 50 40 30 5 0 20 0 1.4 100 70 90 80 56 70 30 60 20 50 40 30 10 20 0 10 0 5 1 2 3 DC Current (A) 2.8 4.2 5.6 10 0 7.0 DC Current (A) SRP1040-330M 0 0 15 100 90 10 100 80 0 Temperature Rise ( 100 DC Current (A) 40 Inductance (H) 70 DC Current (A) 0 20 10 0 10 12 14 16 18 20 22 24 90 50 Temperature Rise (C) 80 3.6 9 7.5 0 100 28 2.4 8 1.5 90 1.2 50 40 30 DC Current (A) SRP1040-220M 0 7 9.0 DC Current (A) 35 6 10.5 Inductance (H) 12.0 10.5 9.0 1 5 20 10 0 10 11 12 SRP1040-100M 12.0 Temperature Rise (C) 90 0 2.0 1.6 1.2 0.8 70 60 DC Current (A) 13.5 1.5 0 80 0 100 70 60 DC Current (A) 15.0 90 DC Current (A) 15.0 70 60 100 3.2 2.8 2.4 6.0 100 6.4 5.6 4.8 2 0 22 DC Current (A) 90 0 17.6 SRP1040-2R2M DC Current (A) Temperature Rise (C) Inductance (H) 16 100 0.8 0 Inductance (H) 12 7.2 0.8 0 0 16 13.2 3.6 0.4 0 0 20 SRP1040-3R3M 8.0 DC Current (A) 8.0 8.8 DC Current (A) 3.2 Inductance (H) 80 Inductance (H) 6 4.4 4.0 100 2.4 0 0 DC Current (A) Inductance (H) 4 20 10 0 22 0 Inductance (H) 2 4.0 Inductance (H) 27 4 SRP1040-470M 100 90 Inductance (H) 0 L vs. I Charts DC Current (A) 0 24 SRP1040 Series - Shielded Inductors 3312 - 2 mm SMD TrimmingPower Potentiometer Inductance (H) 0.4 0 Inductance (H) 70 60 Temperature Rise (C) 2.8 2.4 21 SRP1040-1R7M 3 Temperature Rise (C) Inductance (H) 100 90 80 18 20 DC Current (A) DC Current (A) 4.0 3.6 3.2 15 0.6 Temperature Rise (C) 24 40 Temperature Rise (C) 20 Temperature Rise (C) 16 Temperature Rise (C) 12 Temperature Rise (C) 8 4 20 10 0 30 Temperature Rise (C) 0 0.4 0.2 0 1.2 Temperature Rise (C) 20 10 0 32 60 Temperature Rise (C) 0.2 0.1 0 1.8 80 70 42 60 28 50 40 30 14 20 0 10 0 3.0 0 0.6 1.2 1.8 2.4 Temperature Rise (C) 30 50 40 30 Inductance (H 0.3 1.0 0.8 0.6 Inductance (H) 0.4 50 40 70 60 Temperature Rise 0.5 1.4 1.2 Temperature Rise (C) 60 Inductance ( 70 0.6 Temperature Rise ( Inductance (H) 0.7 DC Current (A) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. SRP1040 Series - Shielded Power Inductors Packaging Specifications 2.0 0.5 (.079 .020) 330.0 (13.00) DIA. THICKNESS 0.10 (.004) MAX. 13.5 0.5 (0.53 .020) DIA. 21.0 0.8 (.827 .031) EMBOSSED CAVITY 75.0 2.0 (2.96 0.08) 13.0 0.5 DIA. (.512 .020) EMBOSSED CARRIER 26.0 - 0.00 (1.02 - 0.00) 0.35 0.05 (0.014 0.020) 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. 11.8 0.1 (0.465 0.004) 4.5 0.1 (0.177 0.004) 2.2 0.3 (.087 0.012) 0.15 DIA. (0.0006) 1.75 0.1 (.069 0.004) 24.0 0.3 (0.95 0.012) 16.0 0.1 (0.629 0.004) 10.5 0.1 (0.413 0.004) DIMENSIONS: MM (INCHES) REV. 06/19 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. 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