This series is currently available, Features but not recommended for new n Shielded construction designs. The newer SRP1245A n Unit height of 5.9 mm series is recommended. n Inductance range: 0.22 to 10 μH 100 1725 n Current up to 45 A n RoHS compliant* SRP1250 Series - Shielded Power Inductors Electrical Specifications General Specifications Test Voltage .......................................1 V Inductance I rms I sat DCR Test Frequency .........................100 KHz Bourns Part No. L (μH) ±20 % (A) (A) (mΩ) Max. Reflow Soldering ..230 °C; 50 sec. max. SRP1250-R22M 0.22 45 80 1.0 Operating Temperature SRP1250-R36M 0.36 41 75 1.1 ................................-55 °C to +150 °C SRP1250-R47M 0.47 38 65 1.3 (Temperature rise included) Storage Temperature SRP1250-R50M 0.50 36 55 1.5 ................................-55 °C to +150 °C SRP1250-R56M 0.56 36 55 1.5 Resistance to Soldering Heat SRP1250-R68M 0.68 34 54 1.7 .............................+260 °C for 10 sec. SRP1250-R82M 0.82 31 53 2.3 Materials SRP1250-1R0M 1.00 29 50 2.5 Core ..................................................Iron SRP1250-1R2M 1.20 27 49 3.3 Wire ............................Enameled copper SRP1250-1R5M 1.50 23 48 4.1 Terminal ........................................Cu/Sn SRP1250-1R8M 1.80 21 40 4.7 Rated Current .....Ind. drops 20 % at Isat SRP1250-2R2M 2.20 20 32 5.5 Temperature Rise .....40 °C at rated Irms Packaging .......500 pcs. per 13-inch reel SRP1250-2R7M 2.70 17 32 7.3 SSRRPP11225500--34RR37MM 34..3700 1152 3227 MAX. 195..20 Product Dim(01.35e.49n7)sMiAoXn.s (.52.025) 5.9 MAX. SSSRRRPPP111222555000---667RRR088MMM 667...088000 911.10(50.(1501(20.035.017..3 359 ±1±.3 9) 010M.).03MA1X2A).X. 121418 ((M..522(M..0A35225X2A.39)).X2).112080...055 13.5 (0(.015(.201501.020.735 .0 ±7.4± 9 ±7 0±0 ). 0.00M3.1.03A21)X2.) (.M51(..9MA55207X..0A02).5X). SRP1250-9R0M 9.00 13.5 10(0.1520.07 ±± 00..0312) 18 (.52.025)22.5 (0M.5A3X1.) 100 (.M19A7X). SRP1250-100M 10.0 (0M.5A4X7.) 9 1R5 16 MAX.25.5 (01.35.351) 1170205 13.5 MAX. Soldering Profile (0.547) 1R5 1725 MAX. 12.7 ± 0.3 12.7 ± 0.3 275 (0.500 ± 0.012) 275 (0.500 ± 0.012) 260 °Cpeak <1>Maximum of 10 seconds <1>5 seconds maximum between +255 °C and +260 °C <1>1 225.75 ± ° C0.3 2.5 ± 0.5 at +245 °C12.7 ± 0.3 <1> 245 °C °C) 225 (02.25000 ° C± 0.012) (0.098 ± 0.020) °C) 225 (0.500 ± 0.012) ure( 175 190°C 6m0asxeicmo(nu0dm.0s29.58 ±± 00..5020) R5 a°mCp/sDecoownnd ure( 175 170 °C 183 °C Temperat 125 150 °C 120-150(s0e.c13o1.n08 d±±s 00..5020) Temperat 125 15(00 .°13C1.308. 0±± ±00 ..050.250) 120-150seconds 6m0asxeicmounmds R5 a°mCp/sDecoownnd 10secondsminimum (0.118 ± 0.020) 2.5 ± 0.5 10secondsminimum 75 3.0 ± 0.5 75 (0.098 ± 0.020) Ramp Up (0.118 ± 0.020) Ramp Up 4 °C/secondmaximum 4 °C/secondmaxim2.u5 m± 0.5 25 25 (0.098 ± 0.020) 0 50 100 150 200 250 300 0 50 100 150 200 250 300 Time (Second15s.)0 4.5 Recommended LayoutTime (Seconds) (.177) (0.591) 15.0 4.5 15.0 4.5 (0.591) (.177) (0.591) (.177) 2.5 15.0 (.099)4.5 (0.591) (.177) 7.0 4.5 7.0 (.276) (.177) (.276) 7.0 1.5 M7.M0 (.276) DIMENSIO(.N06S0:) (IN(.C27H6E)S) WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Electrical Schematic 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 o f this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

SRP1250 Series - Shielded Power Inductors L vs. I Charts SRP1250-R22M SRP1250-R36M SRP1250-R47M 0.4 100 0.60 110 0.60 110 Inductance (H)µ000...123642 468000 mperature Rise (°C) Inductance (H)µ0000000.......12334458406284 34567893456789 mperature Rise (°C) Inductance (H)µ0000000.......12334458406284 34567893456789 mperature Rise (°C) 0.08 20 Te 0.12 22 Te 0.12 22 Te 0.06 11 0.06 11 0 0 0 0 0 0 0 12 24 36 48 60 0 5 10 15 20 25 30 35 40 45 50 55 60 0 5 10 15 20 25 30 35 40 45 50 55 60 65 DC Current (A) DC Current (A) DC Current (A) SRP1250-R50M SRP1250-R56M SRP1250-R68M Inductance (H)µ0000000000..........01123344566284062840 123456789112345678910Temperature Rise (°C) Inductance (H)µ0000000000..........01123344566284062840 123456789112345678910Temperature Rise (°C) Inductance (H)µ0000000000..........01234456788642086420 123456789112345678910Temperature Rise (°C) 0 0 0 0 0 0 0 5 10 15 20 25 30 40 45 50 55 60 0 5 10 15 20 25 30 35 40 45 50 55 0 5 10 15 20 25 30 35 40 45 50 55 60 DC Current (A) DC Current (A) DC Current (A) SRP1250-R82M SRP1250-1R0M SRP1250-1R2M Inductance (H)µ0000....12479.0482620 10.6 21.2 31.8 42.4 53024681000000Temperature Rise (°C) Inductance (H)µ 010000000011............08112345679020 5 10 15 20 25 35 40 45 50 602345678910123456789110Temperature Rise (°C) Inductance (H)µ 1100....062840 10 20 30 40 5001481600200Temperature Rise (°C) DC Current (A) DC Current (A) DC Current (A) SRP1250-1R5M SRP1250-1R8M SRP1250-2R2M Inductance (H)µ 0001112223..........3692581470 1234678911246802460280Temperature Rise (°C) Inductance (H)µ 221100......405284 1481600200Temperature Rise (°C) Inductance (H)µ 00011122........36915814 1234678912468024608Temperature Rise (°C) 00 5 10 15 20 25 30 35 400 00 8 16 24 32 400 00 5 10 15 20 25 30 35 400 DC Current (A) DC Current (A) DC Current (A) SRP1250-2R7M SRP1250-3R3M SRP1250-4R7M 4.0 140 0.40 108 6.0 108 Inductance (H)µ 3210....246080 8 16 24 32024681100000200 Temperature Rise (°C) Inductance (H)µ000000000.......1122233..48260480260 5 10 15 20 25 30 01234678924680246 Temperature Rise (°C) Inductance (H)µ 01122334455...........5050550005050 4 8 12 15 20 24 2801234678924680246 Temperature Rise (°C) DC Current (A) DC Current (A) DC Current (A) SRP1250-6R0M SRP1250-6R8M SRP1250-7R8M SUThInductance (H)pµseee rcp1si24680rfi oschdauoticuotlnsds dv aeersreicf rysi ubabecdjteu chatel rtdoeei ncv hiacanend pg teehr wifsoi rtdmhoocauuntmc neeo intnitc taehr.ee24681i rs00000 0usbTemperature Rise (°C)pjeeccitfi tcoInductance (H)µ a sppp12345678e........l00000000cicifiacti olengsa. l disclaimers as set forth on the last page 12346789o24680246f tTemperature Rise (°C)his doInductance (H)µcu1m2345678901..........e0000000000nt, and at www.bourns.com/docs/legal/disclaim1234678924680246er.Temperature Rise (°C)pdf. 0 0 0 0 0 0 0 2 4 6 8 10 12 14 16 18 0 2.8 5.6 8.4 11.2 14 0 3 6 9 12 15 18 21 DC Current (A) DC Current (A) DC Current (A) SRP1250-9R0M SRP1250-100M 16 120 12.0 100 Inductance (H)µ 10428 480261000000 Temperature Rise (°C) Inductance (H)µ1112345678901...........00000000000 891234567000000000 Temperature Rise (°C) 0 3 6 9 12 15 18 0 0 DC Current (A) 0 2 4 6 8 10 12 14 16 DC Current (A)

SRP1250-R22M SRP1250-R36M SRP1250-R47M 0.4 100 0.60 110 0.60 110 Inductance (H)µ000...123642 468000 mperature Rise (°C) Inductance (H)µ0000000.......12334458406284 34567893456789 mperature Rise (°C) Inductance (H)µ0000000.......12334458406284 34567893456789 mperature Rise (°C) 0.08 20 Te 0.12 22 Te 0.12 22 Te 0.06 11 0.06 11 0 0 0 0 0 0 0 12 24 36 48 60 0 5 10 15 20 25 30 35 40 45 50 55 60 0 5 10 15 20 25 30 35 40 45 50 55 60 65 DC Current (A) DC Current (A) DC Current (A) SRP1250-R50M SRP1250-R56M SRP1250-R68M Inductance (H)µ0000000000..........01123344566284062840 123456789112345678910Temperature Rise (°C) Inductance (H)µ0000000000..........01123344566284062840 123456789112345678910Temperature Rise (°C) Inductance (H)µ0000000000..........01234456788642086420 123456789112345678910Temperature Rise (°C) 0 0 0 0 0 0 0 5 10 15 20 25 30 40 45 50 55 60 0 5 10 15 20 25 30 35 40 45 50 55 0 5 10 15 20 25 30 35 40 45 50 55 60 DC Current (A) DC Current (A) DC Current (A) SRP1250-R82M SRP1250-1R0M SRP1250-1R2M Inductance (H)µ0000....12479.0482620 10.6 21.2 31.8 42.4 53024681000000Temperature Rise (°C) Inductance (H)µ 010000000011............08112345679020 5 10 15 20 25 35 40 45 50 602345678910123456789110Temperature Rise (°C) Inductance (H)µ 1100....062840 10 20 30 40 5001481600200Temperature Rise (°C) DC Current (A) DC Current (A) DC Current (A) SRP1250-1R5M SRP1250-1R8M SRP1250-2R2M Inductance (H)µ 0001112223..........3692581470 1234678911246802460280Temperature Rise (°C) Inductance (H)µ 221100......405284 1481600200Temperature Rise (°C) Inductance (H)µ 00011122........36915814 1234678912468024608Temperature Rise (°C) 00 5 10 15 20 25 30 35 400 00 8 16 24 32 400 00 5 10 15 20 25 30 35 400 DC Current (A) DC Current (A) DC Current (A) SRP1250-2R7M SRP1250-3R3M SRP1250-4R7M 4.0 140 0.40 108 6.0 108 Inductance (H)µ 3210....2460803S3R1P218 2- 520 m 16Smer iSe24Ms -D S T32h0246811r00000200iimeTemperature Rise (°C)lmdInductance (H)µei0000000d00.......n1122233..48260480260 gP oP5wotee1r0n Itni1o5dmuc2e0ttoe2rr5s 30 01234678924680246 Temperature Rise (°C) Inductance (H)µ 01122334455...........5050550005050 4 8 12 15 20 24 2801234678924680246 Temperature Rise (°C) L vs. I ChartsDC Current (A) DC Current (A) DC Current (A) SRP1250-6R0M SRP1250-6R8M SRP1250-7R8M Inductance (H)µ124680 24681000000Temperature Rise (°C) Inductance (H)µ 12345678........00000000 1234678924680246 Temperature Rise (°C) Inductance (H)µ12345678901..........0000000000 1234678924680246 Temperature Rise (°C) 0 0 0 0 0 0 0 2 4 6 8 10 12 14 16 18 0 2.8 5.6 8.4 11.2 14 0 3 6 9 12 15 18 21 DC Current (A) DC Current (A) DC Current (A) SRP1250-9R0M SRP1250-100M 16 120 12.0 100 Inductance (H)µ 10428 480261000000 Temperature Rise (°C) Inductance (H)µ1112345678901...........00000000000 891234567000000000 Temperature Rise (°C) 0 3 6 9 12 15 18 0 0 DC Current (A) 0 2 4 6 8 10 12 14 16 DC Current (A) Packaging Specifications 330.0 2.0 ± 0.5 (13.00) (.079 ± .020) DIA. THICKNESS 0.10 13.5 ± 0.5 (.004) (0.53 ± .020) MAX. DIA. EMBOSSED 75.0 ± 2.0 CAVITY (2.96 ± 0.08) 13.5 ± 0.5 DIA. (.53 ± .020) EMBOSSED CARRIER 24.0 ± 0.5 (0.95 ± 0.020) 4.0 ± 0.1 2.0 ± 0.1 1.5 ± 0.1 0.35 ± 0.05 (0.157 ± 0.004) (0.079 ± 0.004) (0.059 ± 0.004) 1.75 ± 0.1 DIA. (.069 ± 0.004) (0.014 ± 0.020) 13.9 ± 0.1 2.7 ± 0.3 (0.547 ± 0.004) (.106 ± 0.012) 24.0 ± 0.3 (0.95 ± 0.012) 5.6 ± 0.1 13.5 ± 0.1 16.0 ± 0.1 (0.220 ± 0.004) 0.15 DIA. (0.520 ± 0.004) (0.629 ± 0.004) (0.0006) MM DIMENSIONS: (INCHES) REV. 06/19 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.

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