{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ4729E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ4729E3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ4729E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ4729E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ4729E3/TR13 Zener diode, 3.6 V, 2 W, ±10% tolerance, DO-214AC SMA package, Tape & Reel.","salesMarkdown":"## Active production — 3.6 V Zener in a standard SMA outline The SMAJ4729E3/TR13 is a 3.6 V Zener diode from Microchip Technology, rated for 2 W maximum power dissipation in the DO-214AC (SMA) surface-mount package. The ±10% tolerance on the nominal Zener voltage means the actual breakdown sits between 3.24 V and 3.96 V — wide enough for general-purpose shunt regulation or voltage clamping, but worth checking if the downstream circuit needs a tighter reference. With a maximum Zener impedance of 10 Ohms at the test current, the regulation voltage shifts about 10 mV per mA of load change — acceptable for most bias and protection roles, though a lower-impedance Zener would be preferred for precision references. ## Temperature grade and package fit The DO-214AC (SMA) footprint is a JEDEC standard outline shared across thousands of Schottky and Zener diodes. The Tape & Reel (TR) packaging on a 13-inch reel feeds directly into a pick-and-place line; the reel quantity is confirmed at quote time. ## Leakage and forward characteristics Reverse leakage is specified at 100 µA maximum when 1 V is applied — well below the Zener knee, so the diode draws negligible current in a reverse-biased protection circuit until the transient exceeds 3.6 V. Forward voltage is 1.2 V maximum at 200 mA forward current — the diode conducts like a standard silicon rectifier in the forward quadrant, which matters if the circuit uses it as a bidirectional clamp.","metaTitle":"Microchip SMAJ4729E3/TR13 Zener Diode, 3.6 V, 2 W, DO-214AC","metaDescription":"Active Microchip SMAJ4729E3/TR13 Zener diode, 3.6 V nominal, 2 W max, ±10% tolerance, DO-214AC SMA package, -55°C to +150°C. Quoted 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":"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":"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":[{"question":"What is the closest pin-compatible alternative to SMAJ4729E3/TR13 in the same family?","answer":"The SMAJ4729 series shares the same DO-214AC footprint and 2 W power rating across all voltage options. The base product number SMAJ472 covers the full family; a different Zener voltage (e.g., 3.3 V or 3.9 V) is the only parametric change — the package and land pattern are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ4729E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ4729E3-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}}