Features Applications Available in E12 values Input/output of DC/DC converters Inductance range as low as 1.1 H Power supplies for: - Portable communication equipment Current rating to 10.2 amps - Camcorders RoHS compliant* - LCD televisions SRR1280 Series - Shielded SMD Power Inductors Inductance Test Frequency / Voltage Test SRF I rms RDC I sat Inductance Q Bourns **K- SRR1280-1R1Y to -8R2Y ... 100 kHz/1 V Max. Freq. Typ. Max. Typ. Part Number (Typ.) Factor (H) Tol. (%) SRR1280-100M to -102K........ 1 kHz/1 V (MHz) (MHz) (m) (A) (A) Operating Temperature SRR1280-1R1Y 1.1 30 26 7.96 85 6.5 10.20 14.00 94 ................................-40 C to +125 C SRR1280-1R2Y 1.2 30 28 7.96 83 18.0 6.60 7.80 90 (Temperature rise included) SRR1280-1R4Y 1.4 30 24 7.96 80 9.8 9.80 12.00 90 Storage Temperature SRR1280-2R4Y 2.4 30 20 7.96 45 10.0 9.20 10.50 62 ................................-40 C to +125 C SRR1280-3R3Y 3.3 30 20 7.96 40 12.0 8.80 9.80 54 Resistance to Soldering Heat SRR1280-3R5Y 3.5 30 20 7.96 36 12.0 8.80 9.80 56 .............................+260 C for 10 sec. SRR1280-4R5Y 4.5 30 20 7.96 34 13.5 8.50 9.00 48 Temperature Rise SRR1280-4R7Y 4.7 30 22 7.96 30 15.5 8.20 8.80 48 ....................40 C max. at rated I rms SRR1280-5R6Y 5.6 30 20 7.96 24 16.0 8.00 8.50 44 Inductance Drop .......... 25 % typ. at I sat SRR1280-6R1Y 6.1 30 20 7.96 23 18.0 6.60 7.80 43 Moisture Sensitivity Level .....................1 SRR1280-6R8Y 6.8 30 20 7.96 22 18.5 7.60 8.00 39 .................N/A SRR1280-7R5Y 7.5 30 16 7.96 21 17.5 6.40 7.00 37 SRR1280-7R6Y 7.6 30 15 7.96 21 20.0 5.90 6.50 35 Materials SRR1280-8R2Y 8.2 30 22 2.52 20 20.5 6.20 6.80 35 Core ............................Ferrite DR and RI SRR1280-100M 10.0 20 24 2.52 17 19.5 6.00 6.30 32 Wire ............. Enameled copper wire 130 SRR1280-120M 12.0 20 26 2.52 15 28.0 5.60 6.60 30 Terminal ....................................Cu/Ni/Sn SRR1280-150M 15.0 20 26 2.52 13 28.5 5.20 5.00 28 Packaging .................... 400 pcs. per reel SRR1280-180M 18.0 20 24 2.52 12 35.0 4.80 4.60 23 SRR1280-220M 22.0 20 20 2.52 11 38.6 4.30 4.10 21 Product Dimensions SRR1280-270M 27.0 20 26 2.52 10 52.0 3.90 3.70 20 SRR1280-330M 33.0 20 28 2.52 9.5 57.0 3.50 3.30 17 12.5 0.3 (.492 .012) SRR1280-390M 39.0 20 24 2.52 8.5 70.0 3.20 3.10 16 SRR1280-470M 47.0 20 24 2.52 7.5 80.0 2.90 2.80 15 SRR1280-560M 56.0 20 24 2.52 7.0 100.0 2.60 2.50 13 SRR1280-680M 68.0 20 20 2.52 6.5 120.0 2.40 2.30 12 SRR1280-820M 82.0 20 20 0.796 5.0 130.0 2.30 2.20 11 12.5 0.3 100 (.492 .012) SRR1280-101M 100.0 20 18 0.796 4.5 150.0 2.10 2.00 10 SRR1280-121K 120.0 10 16 0.796 4.3 200.0 1.95 1.95 9 SRR1280-151K 150.0 10 24 0.796 4.1 270.0 1.85 1.90 8 SRR1280-181K 180.0 10 24 0.796 4.0 300.0 1.75 1.88 7 7.5 0.5 SRR1280-221K 220.0 10 24 0.796 3.4 400.0 1.60 1.70 7 (.295 .020) SRR1280-271K 270.0 10 20 0.796 3.1 450.0 1.20 1.60 6 SRR1280-331K 330.0 10 18 0.796 2.9 600.0 1.10 1.40 5 SRR1280-391K 390.0 10 20 0.796 2.7 680.0 1.00 1.40 5 5.0 0.3 SRR1280-471K 470.0 10 20 0.796 2.2 880.0 0.90 1.25 5 (.197 .012) SRR1280-561K 560.0 10 20 0.796 2.0 960.0 0.80 1.15 4 SRR1280-681K 680.0 10 26 0.796 1.7 1300.0 0.75 0.97 4 SRR1280-821K 820.0 10 20 0.796 1.4 1500.0 0.70 0.94 4 SRR1280-102K 1000.0 10 40 0.252 1.3 1700.0 0.68 0.80 3 7.0 TYP. I (peak-to-peak ripple current, (.276) A), determine core loss from Core Loss vs. Flux Density plot. Electrical Schematic Recommended Layout MM 5.4 DIMENSIONS: REF. (INCHES) (.213) * RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specications are subject to change without notice. 6.8 Users should verify actual device performance in their (.268) 2.9 2.9 REF. specic applications. The products described herein and (.114) (.114) this document are subject to specic legal disclaimers as REF. REF. WARNING Cancer and Reproductive Harm set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf www.P65Warnings.ca.gov 470 *RoHS COMPLIANT SRF0504 Series - Line FilterSRR1280 Series - Shielded SMD Power Inductors Core Loss vs. Flux Density 10000 1000 100 10 1 0.1 0.01 0.001 10 100 1000 800 KHz 100 KHz Flux Density Bp-p (gauss) 500 KHz 50 KHz 300 KHz 10 KHz 200 KHz 330 2.0 0.5 DIA. 30.4 (12.99) (.079 .020) (1.197) 13.0 21.0 0.8 (.512) (.827 .031) DIA. 50.0 (1.969) 13.0 DIA. (.512) 24.0 26 (.945) (1.024) 4.0 (.157) END START 24 (.945) 100 100 100 20.0 (.787) NO COMPONENT COMPONENTS NO COMPONENT 400 200 (7.87) (15.75) USER DIRECTION OF FEED QTY: 400 PCS. PER REEL REV. 03/18 Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Core Loss (mW)