{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ4731AE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ4731AE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ4731AE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ4731AE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ4731AE3/TR13 zener diode, 4.3 V, 2 W, ±5% tolerance, DO-214AC SMA package, Tape & Reel.","salesMarkdown":"## Active production — 4.3 V zener in DO-214AC The SMAJ4731AE3/TR13: The ±5% tolerance on the nominal zener voltage means the regulation point sits between 4.085 V and 4.515 V across the full operating temperature range of -55°C to 150°C — wide enough for general-purpose shunt regulation but tight enough for most bias and clamp circuits. ## 9 Ohm max impedance — regulation under load Maximum dynamic impedance (Zzt) is 9 Ohms at the test current — this sets the voltage shift when the load current varies. A 10 mA change in zener current shifts the output by up to 90 mV, which is within the ±5% tolerance band for most bias applications. ## Tape & Reel — feeder-ready for volume assembly Supplied on Tape & Reel (TR), the part is feeder-ready for automated pick-and-place lines — no manual handling or re-reeling needed for standard SMA pad layouts.","metaTitle":"SMAJ4731AE3/TR13 Zener Diode, 4.3 V, 2 W, DO-214AC","metaDescription":"Microchip Technology SMAJ4731AE3/TR13 zener diode, 4.3 V nominal, 2 W, ±5% tolerance, DO-214AC SMA package, -55°C to 150°C. 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":"±5%","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":"What is SMAJ4731AE3/TR13's listed tolerance?","answer":"The tolerance is ±5% on the nominal 4.3 V zener voltage. This means the actual Vz at the test current falls between 4.085 V and 4.515 V — standard precision for general-purpose shunt regulation and voltage clamping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ4731AE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ4731AE3-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}}