{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ4731E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ4731E3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ4731E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ4731E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ4731E3/TR13 Zener diode, 4.3 V nominal, 2 W, ±10% tolerance, DO-214AC SMA package, Tape & Reel.","salesMarkdown":"## 4.3 V Zener in a 2 W SMA package The Microchip SMAJ4731E3/TR13 is a 4.3 V Zener diode rated for 2 W continuous power dissipation in the DO-214AC (SMA) surface-mount package. The 9 Ohms maximum Zener impedance at the test current means the regulation voltage shifts about 9 mV per mA of load change — a figure to budget when the diode is the shunt element in a rail or reference circuit. Reverse leakage is 10 µA maximum at 1 V reverse — low enough that it won't steal bias current from a high-impedance divider in a monitoring loop. ## Package and board-fit note Tape & Reel (TR) packaging feeds directly into pick-and-place lines; the reel quantity matches typical volume builds without a changeover mid-strip. Tolerance is ±10% — a 4.3 V nominal part regulates between 3.87 V and 4.73 V at the test current. If the downstream circuit needs tighter regulation (a 5% or 2% band), the SMAJ family includes Zener grades with those tolerances; this ±10% variant is the general-purpose choice for bias rails and clamp protection where the absolute voltage matters less than the clamp ceiling.","metaTitle":"Microchip SMAJ4731E3/TR13 Zener Diode, 4.3 V, 2 W, DO-214AC","metaDescription":"Microchip SMAJ4731E3/TR13 Zener diode, 4.3 V nominal, 2 W, ±10% tolerance, DO-214AC SMA package. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±10%","Power - Max":"2 W","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"SMAJ473","Impedance (Max) (Zzt)":"9 Ohms","Operating Temperature":"-55°C~150°C","Supplier Device Package":"DO-214AC","Voltage - Zener (Nom) (Vz)":"4.3 V","Current - Reverse Leakage @ Vr":"10 µA @ 1 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6150","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ebad8f820d8ea0d9e07e6ed7b505adea.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I request pricing and lead time for SMAJ4731E3/TR13?","answer":"Submit an RFQ through this listing."},{"question":"What package does SMAJ4731E3/TR13 use?","answer":"The device comes in the DO-214AC (SMA) surface-mount package, supplied on Tape & Reel (TR). The SMA footprint is shared across the SMAJ Zener family, so a single land pattern on the PCB supports multiple voltage and power variants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ4731E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ4731E3-TR13 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}}