{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ4729CE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ4729CE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ4729CE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ4729CE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology Zener Diode, SMAJ4729CE3/TR13, Voltage - Zener (Nom) (Vz) 3.6 V, Tolerance ±2%, Power - Max 2 W, DO-214AC SMA, Surface Mount, Tape & Reel.","salesMarkdown":"## Parametrics that drive the fit check The SMAJ4729CE3/TR13: Rated to dissipate 2 W continuously (Power - Max) — this sets the DC load ceiling; in a shunt regulator or voltage clamp, the junction-to-ambient thermal path in the SMA footprint governs how much of that 2 W is usable at 85°C ambient. The ±2% tolerance (±72 mV at 3.6 V) is tight enough for a precision reference rail feeding a comparator or ADC bias, but the 10 Ohm maximum Zzt (Zener impedance) means the output voltage shifts with current — the effective regulation is a function of the Zener current, not just the nominal Vz. Reverse leakage is specified at 100 µA max at 1 V reverse bias — well below the self-discharge threshold of most battery-backed rails, so it won't drain a coin cell in storage. ## Temperature grade and board integration The DO-214AC (SMA) package is a standard footprint; reflow profile follows JEDEC MSL-1 (no bake required before assembly) as typical for Microchip Zener diodes in this family. The Tape & Reel (TR) packaging is the production-friendly format for pick-and-place.","metaTitle":"Microchip SMAJ4729CE3/TR13 Zener Diode, 3.6 V, 2 W, DO-214AC","metaDescription":"Microchip SMAJ4729CE3/TR13 Zener diode, 3.6 V, 2 W, ±2% tolerance, DO-214AC SMA. Active production, sourced to order. Request a quote.","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":"±2%","Power - Max":"2 W","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"SMAJ472","Impedance (Max) (Zzt)":"10 Ohms","Operating Temperature":"-55°C~150°C","Supplier Device Package":"DO-214AC","Voltage - Zener (Nom) (Vz)":"3.6 V","Current - Reverse Leakage @ Vr":"100 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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ4729CE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ4729CE3-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}}