HA3778-ALB Coilcraft

Document 684-1 For NSC LM315x Shielded Power Inductor SIMPLE SWITCHER Designed specifically for National Semiconductor LM315x SIMPLE SWITCHER Controllers for applications with output current up to 12 A. L1 on NSC Demonstration Board LM3152-3.3 Soft saturation makes it ideal for use in multi-phase VRM/VRD regulators and high current/high frequency DC/DC converters. Flat wire construction for low DCR The materials used eliminate all thermal aging issues Core material Powdered iron Terminations RoHS compliant tin-silver over copper. Other termina- tions available at additional cost. Weight 3.44 g Ambient temperature 40C to +85C with Irms current Maximum part temperature +125C (ambient + temp rise). Storage temperature Component: 40C to +125C. Packaging: 40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Packaging 100/7 reel 500/13 reel Plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing, 7.5 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. 2 3 4 5 Part Inductance DCR 8% SRF typ Isat Irms 1 number 20% (H) (mOhm) (MHz) (A) (A) HA3778-AL 1.65 2.53 55 17 20 1. When ordering, please specify termination and packaging codes: HA3778-ALC Termination: L = RoHS compliant tin-silver over copper. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic tape (100 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ( 25 charge). D = 13 machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (500 parts per full reel). B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C. 2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD-A fixture in an Agilent/HP 4284A LCR meter or equivalent. 3. SRF measured on an Agilent/HP 8753ES. 4. DC current at which the inductance drops 30% (typ) from its value with- out current. 5. Current that causes a 40C temperature rise from 25C ambient. This information is for reference only and does not represent absolute maxi- mum ratings. 6. Electrical specifications at 25C. Refer to Doc 362 Soldering Surface Mount Components before soldering. inches Dimensions are in mm Document 684-1 Revised 12/21/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 684-2 Shielded Power Inductor HA3778-AL Inductance vs Current Inductance vs Frequency 3.0 3.0 2.5 2.5 2.0 2.0 1.5 1.5 1.65 H 1.65 H 1.0 1.0 0.5 0.5 0 0 0.1 1 10 100 0.1 1 10 100 Current (A) Frequency (MHz) Temperature Rise vs Current 80 70 60 1.65 H 50 40 30 20 10 0 015 10 520253035 Current (Arms) Document 684-2 Revised 12/21/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information. Temperature rise (from 25C) Inductance (H) Inductance (H)