{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DFEH10040D-100M=P3","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"DFEH10040D-100MP3","canonicalUrl":"https://icboms.com/murata-electronics/DFEH10040D-100MP3","factsUrl":"https://icboms.com/api/mcp/products/DFEH10040D-100M%3DP3","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics DFEH10040D series shielded power inductor, DFEH10040D-100M=P3, 10 µH ±20%, 5.7 A rated, 7.3 A saturation, 33 mOhm DCR, AEC-Q200, surface mount, nonstandard package.","salesMarkdown":"## 10.9 × 10.0 mm shielded power inductor for automotive DC-DC stages The Murata DFEH10040D-100M=P3 is a 10 µH shielded power inductor in the DFEH10040D series, rated for 5.7 A continuous current with a 7.3 A saturation floor. The 33 mOhm max DCR sets the I²R conduction loss — at full rated current the self-heating is roughly 1.1 W, which the iron powder core and 4.0 mm seated height must dissipate into the board copper. ## Last Buy — the procurement window is closing Murata has flagged the DFEH10040D-100M=P3 as Last Buy. This is the final production run — once the allocated inventory clears, the part enters end-of-life and is no longer manufactured. For a BOM that already carries this order code, the decision is whether to buy the lifetime requirement now or qualify a replacement before the window closes. The Last Buy status applies to this specific inductance-tolerance variant; other values in the same family may still be active. ## Current rating, saturation, and the real thermal ceiling Two current limits govern the usable range: the 5.7 A rated current is the DC current at which the temperature rise reaches the datasheet limit, typically 40 °C above ambient. The 7.3 A saturation current is where the inductance drops by 30 % — beyond this the inductor behaves more like a wire and the ripple current in a buck converter rises sharply. In practice, the thermal limit (5.7 A) binds first in a 85 °C ambient; the saturation limit (7.3 A) only becomes the ceiling in low-duty or pulsed applications where the RMS current stays below 5.7 A but the peak exceeds it. The iron powder core has a soft saturation characteristic — the inductance rolls off gradually rather than collapsing, which gives some margin in transient events. ## Board-fit and thermal management The nonstandard surface-mount package measures 10.90 × 10.00 mm with a 4.00 mm seated height. The footprint is larger than a standard 10×10 mm power inductor — the extra 0.9 mm on the length side accommodates the wider core and thicker winding for the 5.7 A rating. The bottom face has a large solder pad that carries the winding current and conducts heat into the PCB copper. For the 1.1 W dissipation at full load, a 2-ounce copper pour on the top layer under the part, with vias to an inner ground plane, keeps the core temperature within the -40 °C to +155 °C operating range. The ±20 % tolerance is typical for power-grade ferrite and iron-powder inductors — the DC bias characteristic shifts the inductance down by 10-15 % at rated current, so the tolerance and bias derating together mean the effective inductance at load is closer to 7-8 µH.","metaTitle":"Murata DFEH10040D-100M=P3 Power Inductor, 10 µH, 5.7 A","metaDescription":"Murata DFEH10040D-100M=P3 shielded power inductor, 10 µH, 5.7 A, 33 mOhm DCR, AEC-Q200.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","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":"10 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Last Time Buy","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)":"33mOhm Max","Current Rating (Amps)":"5.7 A","Height - Seated (Max)":"0.157\\\" (4.00mm)","Operating Temperature":"-40°C~155°C","Supplier Device Package":"-","Frequency - Self Resonant":"-","Current - Saturation (Isat)":"7.3A","Inductance Frequency - Test":"100 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7af062c940733a821f973d8209399ac8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the DFEH10040D-100M=P3 or check current availability?","answer":"The DFEH10040D-100M=P3 is in Last Buy status. Submit an RFQ with your target quantity and required delivery window; pricing and lead time are quoted against that request."},{"question":"What is the closest alternative to the DFEH10040D-100M=P3 in the same series?","answer":"Other inductance values within the DFEH10040D series share the same 10.90 × 10.00 mm footprint and AEC-Q200 rating, but a different inductance value would require re-tuning the converter's compensation and ripple current. A parametric search for 10 µH, 5.7 A, shielded, AEC-Q200 in a similar package is the practical replacement path."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/DFEH10040D-100MP3","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-100MP3 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}}