{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4744AUR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4744AUR","canonicalUrl":"https://icboms.com/microchip/1N4744AUR","factsUrl":"https://icboms.com/api/mcp/products/1N4744AUR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4744AUR Zener Diode, 15 V nominal, 1 W, ±5% tolerance, DO-213AB MELF surface-mount package, -65°C to 175°C operating range.","salesMarkdown":"## 15 V regulation at 1 W — active production, no obsolescence risk The 1N4744AUR: Rated at 1 W maximum power dissipation, the part can handle steady-state regulation or transient clamping within that thermal envelope — the DO-213AB glass body conducts heat through the solder end caps to the board pads. ## DO-213AB MELF — surface-mount integration note The DO-213AB MELF (Metal Electrode Leadless Face) package is a cylindrical glass body with solderable end caps. It sits flat on the PCB and reflows like a chip resistor — the footprint is a simple two-pad layout with the cathode band identified by a polarity mark on the body. Because the MELF has no leads, the solder joint is the sole mechanical and thermal attachment. The pad geometry should match the manufacturer's recommended land pattern to avoid tombstoning during reflow. ## -65°C to 175°C — extreme-temperature qualification The full military temperature range (-65°C to 175°C) qualifies this diode for downhole instrumentation, aerospace avionics, and engine-bay electronics where the ambient exceeds standard industrial limits.","metaTitle":"Microchip 1N4744AUR Zener Diode, 15 V, 1 W, DO-213AB MELF","metaDescription":"Active-production 15 V zener diode, 1 W, ±5% tolerance. DO-213AB MELF surface-mount package. -65°C to 175°C range. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Series":"-","Package":"Bulk","Tolerance":"±5%","Power - Max":"1 W","Mounting Type":"Surface Mount","Package / Case":"DO-213AB, MELF","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N4744","Impedance (Max) (Zzt)":"14 Ohms","Operating Temperature":"-65°C~175°C","Supplier Device Package":"DO-213AB","Voltage - Zener (Nom) (Vz)":"15 V","Current - Reverse Leakage @ Vr":"5 µA @ 11.4 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.3900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bc4f081abf264e3fbd0ed0846e93ec3c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package is the 1N4744AUR supplied in?","answer":"It comes in a DO-213AB MELF (Metal Electrode Leadless Face) surface-mount package. The package is supplied in Bulk, not tape-and-reel, so plan for manual or tube-fed placement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4744AUR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4744AUR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}