{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DFEH10040D-3R3M=P3","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"DFEH10040D-3R3MP3","canonicalUrl":"https://icboms.com/murata-electronics/DFEH10040D-3R3MP3","factsUrl":"https://icboms.com/api/mcp/products/DFEH10040D-3R3M%3DP3","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics DFEH10040D series, DFEH10040D-3R3M=P3, Shielded Power Inductor, 3.3 µH, ±20%, 10 A, 12 mOhm DCR, 13 A Isat, AEC-Q200, -40°C to +155°C, Surface Mount, Nonstandard.","salesMarkdown":"## What the ratings mean for your DC-DC stage The DFEH10040D-3R3M=P3: Rated 10 A continuous with a saturation floor of 13 A (Isat) — the core holds its inductance up to the saturation knee, so a 10 A buck converter running at 8 A peak has margin before the inductance collapses and ripple current spikes. 12 mOhm max DCR keeps the I²R conduction loss under 1.2 W at full rated current — that heat dumps into the board copper, so the surrounding via pattern and plane layer matter for keeping the core below the 155 °C ceiling. Iron powder core material handles the saturation gracefully — no air-gap fringing, and the inductance rolls off smoothly rather than abruptly, which is forgiving in a voltage-mode control loop. ## AEC-Q200 and the 155 °C ceiling AEC-Q200 qualification means this inductor passed the automotive-grade stress tests: thermal shock, biased humidity, mechanical shock, and vibration. The -40 °C to +155 °C operating range covers under-hood and transmission-mounted electronics — the 155 °C upper limit is the hotspot at full load, not the ambient. Shielded construction contains the magnetic field to the package footprint — no stray coupling into adjacent sense traces or RF stages on the same board layer.","metaTitle":"DFEH10040D-3R3M=P3 Murata Shielded Power Inductor, 3.3 µH","metaDescription":"Murata DFEH10040D-3R3M=P3 shielded power inductor, 3.3 µH ±20%, 10 A rated, 13 A sat, 12 mOhm DCR, AEC-Q200, -40 to +155°C. Obsolete, sourced to order.","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":"3.3 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)":"12mOhm Max","Current Rating (Amps)":"10 A","Height - Seated (Max)":"0.157\\\" (4.00mm)","Operating Temperature":"-40°C ~ 155°C","Supplier Device Package":"-","Frequency - Self Resonant":"-","Current - Saturation (Isat)":"13A","Inductance Frequency - Test":"100 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7af062c940733a821f973d8209399ac8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy DFEH10040D-3R3M=P3 and how is it quoted?","answer":"Submit an RFQ for your target quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/DFEH10040D-3R3MP3","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-3R3MP3 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}}