{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DFEH10040D-4R7M=P3","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"DFEH10040D-4R7MP3","canonicalUrl":"https://icboms.com/murata-electronics/DFEH10040D-4R7MP3","factsUrl":"https://icboms.com/api/mcp/products/DFEH10040D-4R7M%3DP3","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics DFEH10040D series, shielded power inductor, 4.7 µH, ±20%, 8.8 A rated, 9.3 A saturation, AEC-Q200, surface mount, 10.90mm x 10.00mm x 4.00mm.","salesMarkdown":"## 4.7 µH, 8.8 A Shielded Power Inductor — AEC-Q200 The Murata DFEH10040D-4R7M=P3 is a 4.7 µH shielded power inductor from the DFEH10040D series, rated for 8.8 A continuous current with a saturation current of 9.3 A. The narrow 0.5 A headroom between rated and saturation current means the inductor saturates quickly once the DC bias exceeds the rated current — the designer must size the ripple current margin accordingly in a buck converter's inductor selection. Qualified to AEC-Q200, the part operates from -40°C to 155°C, covering under-hood and powertrain temperature profiles in automotive ECUs. The iron powder core and shielded construction keep the magnetic field contained, reducing EMI coupling to adjacent power traces in a dense PCB layout. ## Parametric Fit for DC-DC Converter Design With a maximum DC resistance of 16 mOhm, the I²R conduction loss at 8.8 A is about 1.24 W — a thermal consideration for the 4.00 mm seated height in a forced-air or natural-convection environment. The 100 MHz test frequency for inductance is typical for power inductors; the actual inductance at the converter's switching frequency (typically 200 kHz to 2 MHz) will be slightly higher than the 4.7 µH value due to the core's frequency-dependent permeability. Tolerance is ±20%, which is typical for power inductors and must be accounted for in the output ripple voltage calculation. ## Obsolete — Sourcing Through Independent Channels Murata has marked the DFEH10040D-4R7M=P3 as obsolete. For a BOM line that requires this exact inductance, current rating, and footprint, the supply posture is last-time-buy inventory — no guarantee of replenishment once existing stock is exhausted. The AEC-Q200 qualification and 155°C rating make this a candidate for automotive or high-temp industrial designs that are already in production and cannot easily respin the PCB. A design-in for a new project should consider a current-production alternative from the same series or a competitor's shielded power inductor family.","metaTitle":"Murata DFEH10040D-4R7M=P3 Power Inductor, 4.7 µH, 8.8 A","metaDescription":"Murata DFEH10040D-4R7M=P3, 4.7 µH shielded power inductor, 8.8 A rated, 9.3 A saturation, AEC-Q200, -40°C to 155°C. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"-","Series":"DFEH10040D","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"AEC-Q200","Features":"-","Q @ Freq":"-","Shielding":"Shielded","Tolerance":"±20%","Inductance":"4.7 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Obsolete","Material - Core":"Iron Powder","lifecycle_stage":"unknown","Size / Dimension":"0.429\\\" L x 0.394\\\" W (10.90mm x 10.00mm)","Base Product Number":"DFEH10040D","DC Resistance (DCR)":"16mOhm Max","Current Rating (Amps)":"8.8 A","Height - Seated (Max)":"0.157\\\" (4.00mm)","Operating Temperature":"-40°C ~ 155°C","Supplier Device Package":"-","Frequency - Self Resonant":"-","Current - Saturation (Isat)":"9.3A","Inductance Frequency - Test":"100 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$224.9600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7af062c940733a821f973d8209399ac8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for DFEH10040D-4R7M=P3?","answer":"Submit an RFQ through this listing. Pricing and lead time are confirmed at quote time based on available surplus inventory. No stock or price figures are published here."},{"question":"What are the key electrical ratings of DFEH10040D-4R7M=P3?","answer":"Inductance is 4.7 µH ±20%, rated current is 8.8 A, saturation current is 9.3 A, and DC resistance is 16 mOhm max. It is a shielded inductor with an iron powder core, qualified to AEC-Q200, and operates from -40°C to 155°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/DFEH10040D-4R7MP3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/DFEH10040D-4R7MP3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}