{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4125IUFD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4125IUFDPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4125IUFDPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4125IUFD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4125IUFD#PBF, 5W Autoresonant Wireless Power Transmitter, 3V to 5.5V supply, 1mA supply current, -40°C to 125°C, 20-WFQFN Exposed Pad, Tube.","salesMarkdown":"## 5 W autoresonant wireless power transmitter — what it is and where it fits The LTC4125IUFD#PBF from Analog Devices is a 5 W autoresonant wireless power transmitter designed for contactless power delivery across an air gap. It operates from a 3 V to 5.5 V supply and draws a 1 mA quiescent current, making it suitable for battery-powered or low-standby-power systems. The part is rated over the full industrial temperature range of -40°C to 125°C, so it can live in an engine bay, a factory-floor sensor node, or an outdoor enclosure without derating. The QFN package (4x5 mm) keeps the board footprint small, and the exposed pad helps pull heat out when driving a transmit coil at the full 5 W. ## Active lifecycle — no obsolescence risk for new designs The LTC4125IUFD#PBF carries an Active lifecycle status and is ROHS3 compliant. There is no NRND or EOL notice, so it is safe to qualify into a production BOM today. ## Package and mounting — design-in note The part comes in a QFN Exposed Pad package (4x5 mm body) and is specified for surface-mount assembly. The Tube shipment format is typical for prototype or low-volume builds; for reel quantities, confirm the packing option with your supplier. The exposed pad must be soldered to a thermal land on the PCB to meet the rated power dissipation — a standard QFN footprint with a via array under the pad works.","metaTitle":"LTC4125IUFD#PBF 5W Autoresonant Wireless Power Transmitter","metaDescription":"LTC4125IUFD#PBF is an active 5W autoresonant wireless power transmitter from Analog Devices. 3V-5.5V supply, -40°C to 125°C range, 20-QFN package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Applications":"Wireless Power Transmitter","Mounting Type":"Surface Mount","Package / Case":"20-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"1mA","Voltage - Supply":"3V ~ 5.5V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"20-QFN (4x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.14000","currency":"USD"},{"qty":10,"price":"$10.07500","currency":"USD"},{"qty":25,"price":"$9.27920","currency":"USD"},{"qty":100,"price":"$8.48400","currency":"USD"},{"qty":250,"price":"$7.95376","currency":"USD"},{"qty":500,"price":"$7.42350","currency":"USD"},{"qty":1000,"price":"$7.05232","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/4125f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the alternatives to LTC4125IUFD#PBF for wireless power transmission?","answer":"The closest functional peer is the LTC4125EUFD#PBF, which shares the same 5 W power rating, supply voltage range, and industrial temperature grade. The primary difference is the package suffix — the 'I' grade denotes the -40°C to 125°C range, while the 'E' grade covers -40°C to 85°C. For a wider temperature requirement, the IUFD variant is the correct choice."},{"question":"Can LTC4125IUFD#PBF be used for 12V input applications?","answer":"No, the supply voltage range is 3 V to 5.5 V. A 12 V input requires a preregulator (e.g., a buck converter) to step down to 5 V before feeding this transmitter."},{"question":"Can LTC4125IUFD#PBF be used for 10W wireless power?","answer":"The part is rated for 5 W. Operating at 10 W would exceed the rated power and is not supported."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4125IUFDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4125IUFDPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}