Features Applications Height of 2.0 mm Input/output of DC/DC converters Current rating up to 2.7 A Power supplies for: Portable communication equipment RoHS compliant* Camcorders LCD TVs SRR4018 Series - Shielded SMD Power Inductors General Specifications Electrical Characteristics Test Voltage ................................... 0.1 V Inductance DCR Reflow Soldering ...230 C, 50 sec. max. Test SRF 100 kHz Max. Bourns Q Frequency Typ. I rms I sat Operating Temp...........-40 C to +125 C Part Number (H) Tol. % Ref. (MHz) (MHz) (m) (A) (A) (Temperature rise included) Storage Temperature .. -40 C to +125 C SRR4018-1R0Y 1.0 30 9 7.960 219 35 2.70 2.60 Resistance to Soldering Heat SRR4018-1R8Y 1.8 30 9 7.960 105 58 2.35 2.20 ................................ 260 C for 10 sec. SRR4018-2R2Y 2.2 30 8 7.960 90 55 2.10 2.10 Moisture Sensitivity Level......................1 SRR4018-2R7Y 2.7 30 8 7.960 78 60 2.03 1.95 ESD Classification (HBM) ..................N/A SRR4018-3R3Y 3.3 30 8 7.960 61 65 1.95 1.80 SRR4018-3R9Y 3.9 30 8 7.960 60 75 1.82 1.65 Materials SRR4018-4R7Y 4.7 30 8 7.960 55 82 1.72 1.50 Core ............................................. Ferrite SRR4018-5R6Y 5.6 30 7 7.960 57 90 1.64 1.25 Wire ........................... Enameled copper SRR4018-6R8Y 6.8 30 8 7.960 49 100 1.50 1.15 Adhesive ............................... Epoxy resin SRR4018-8R2Y 8.2 30 7 7.960 40 135 1.40 1.10 Terminal .................................... Ag/Ni/Sn SRR4018-100Y 10 30 10 2.520 38 150 1.30 1.00 Rated Current SRR4018-120Y 12 30 9 2.520 32 170 1.15 0.90 ...................Ind. drop 35 % typ. at Isat SRR4018-150Y 15 30 8 2.520 30 220 1.03 0.82 Temperature Rise ................... 30 C typ. at rated Irms SRR4018-180Y 18 30 7 2.520 30 280 0.92 0.75 Packaging .................... 800 pcs. per reel SRR4018-220Y 22 30 7 2.520 29 300 0.88 0.65 SRR4018-270Y 27 30 7 2.520 23 370 0.77 0.60 Product Dimensions SRR4018-330Y 33 30 7 2.520 21 420 0.73 0.50 4.80 0.20 SRR4018-390Y 39 30 8 2.520 19 540 0.64 0.48 (.189 .008) SRR4018-470Y 47 30 8 2.520 20 600 0.62 0.45 SRR4018-560Y 56 30 8 2.520 15 820 0.52 0.40 SRR4018-680Y 68 30 7 2.520 13 860 0.50 0.38 4.80 0.20 SRR4018-820Y 82 30 8 2.520 13 1200 0.43 0.32 6R8 (.189 .008) SRR4018-101Y 100 30 10 0.796 12 1350 0.40 0.30 SRR4018-121Y 120 30 11 0.796 10 1950 0.33 0.28 SRR4018-151Y 150 30 14 0.796 10 2600 0.28 0.26 SRR4018-181Y 180 30 10 0.796 10 4000 0.18 0.25 1.80 0.20 Inductance vs. Current (.071 .008) 1.60 (.063) TYP. 2 10 101 7 5 TYP. 3 1.60 330 (.063) 2 1.60 1 MM (.063) 10 DIMENSIONS: 7 TYP. 100 (INCHES) 5 Recommended Layout 4R7 3 5.30 2.00 REF. (.209) 2 (.079) REF. 0 10 1R0 7 1.80 R (.071) 5 REF. REF. 1.50 1 2 3 4 10 23 5 710 23 5 7 10 23 5 7 10 (.059) DC Current (mA) 2.00 (.079) REF. *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. Users should verify actual device performance in their specic WARNING Cancer and Reproductive Harm applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. *RoHS COMPLIANT Inductance (H) SRR4018 Series - Shielded SMD Power Inductors Soldering Profile Electrical Schematic 275 <1> Maximum of 10 seconds between 260C peak +255C and +260C <1> 255C 225 220C Ramp Down 190C 6C/second 60 - 90 seconds maximum 175 150C 125 120 - 150 seconds 10 seconds minimum 75 Ramp Up 3C/second maximum 25 LCR METER 0 50 100 150 200 250 300 Rev. 02/22/05 Time (seconds) 2.0 0.5 (.079 .020) 178.0 16.5 (7.00) (.650) DIA. DIA. 21.0 0.8 13.0 (.827 .032) (.511) 50.0 - 0 (1.969 - 0) 13.0 DIA. (.511) 14.0 + 0 (.551 + 0) 8.0 4.0 END START (.315) (.157) 6R8 6R8 6R8 6R8 NO COMPONENT NO COMPONENT 200 400 COMPONENTS (7.87) (15.75) USER DIRECTION OF FEED QTY: 800 PCS. PER REEL MM DIMENSIONS: (INCHES) 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. Temperature (C)