D1787-AL COILCRAFT | Alldatasheet
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© Coilcraft, Inc. 2006 Specifications subject to change without notice. Please check our website for latest information. Document 484-1 Document 484-1 Revised 11/09/06 The D1787-AL was developed for use with the National Semiconductor LM5115 Secondary Side Post Regula- tor Controller and LM5025 Primary Side Controller. This flat wire power inductor offers extremely low dc resis- tance and very high current ratings (up to 23 A rms). The flat core allows for exceptional heat dissipation and provides an excellent surface for pick and place operation. This inductor is ideal for power supply applications where high current handling is essential and is perfect for low- voltage dc-dc converters. Custom inductance values are also possible. Request free evaluation samples by contacting Coilcraft or visiting www.coilcraft.com. DCR SRF Part Inductance1 max typ 2 Isat3 Irms4 number ±10% (µH) (mOhms) (MHz) (A) (A) SMT Power Inductor 1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using Coilcraft SMD-D fixture in Agilent/HP 4284A impedance analyzer. 2. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD-D test fixture. 3. DC current at which the inductance drops 20% (typ) from its value without current. 4. Average current for a 40°C rise above 25°C ambient. 5. Operating temperature range -40°C to +85°C. 6. Electrical specifications at 25°C. See Qualification Standards section for environmental and test data. 5Temperature rise (from 25°C) Current (A rms) 0 5 10 15 20 25 Temperature Rise vs Current For National Semiconductor LM5115 DC Controller IC
© Coilcraft, Inc. 2006 SMT Power Inductor - D1787-AL Specifications subject to change without notice. Please check our website for latest information. Document 484-2 Document 484-2 Revised 11/09/06 Typical L vs Frequency Typical L vs Current 100 1000 0.1 1 10010 Inductance (µH) Frequency (MHz) 0.1 1 10010 Current (A) 100 1000 Inductance (µH) Recommended Land Pattern 0.004/0,102 COILCRAFT D1787-AL CCI0525 1.10 27,9 max 0.77 19,6 0.655 16,6 0.150 3,8 0.270 6,9 1.100 27,94 0.160 4,06 0.240 6,10 max max max 0.190 4,83 0.210 5,33 0.220 5,59 0.455 11,56 CL Terminations: Tin-silver over copper Weight: 34.9 g Packaging: 25 pieces per tray