{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ43AE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMCJ43AE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMCJ43AE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMCJ43AE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMCJ43AE3/TR13, Zener TVS diode, 1500W peak pulse power, 43V reverse standoff, 47.8V min breakdown, unidirectional, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"## TVS clamp for a 43V rail – 1500W pulse, 69.4V clamp ceiling The SMCJ43AE3/TR13 is a unidirectional Zener TVS diode from Microchip Technology, rated for 1500W peak pulse power (10/1000 µs waveform) with a reverse standoff voltage of 43V and a minimum breakdown voltage of 47.8V. This part is used for general-purpose transient suppression on DC power rails, signal lines, and I/O ports where the normal operating voltage is 43V or below. ## Breakdown and clamping – where the protection window sits With a 43V reverse standoff, the diode does not conduct at the rail voltage. The breakdown region starts at 47.8V minimum, so a 48V or higher transient triggers avalanche conduction. The clamp voltage of 69.4V maximum at 21.6A peak pulse current sets the upper limit the downstream circuitry must survive. The 1500W peak pulse rating defines the energy the part can absorb in a single 10/1000 µs event before failure. ## Active production – no last-time-buy pressure Microchip lists the SMCJ43AE3/TR13 as Active. The wide range means the breakdown voltage and clamping characteristics shift with temperature, but the datasheet curves (not reproduced here) let you derate the peak pulse power at elevated temperatures.","metaTitle":"SMCJ43AE3/TR13 TVS Diode – Microchip, 1500W, 43V Standoff","metaDescription":"Microchip SMCJ43AE3/TR13 Zener TVS – 1500W peak pulse, 43V reverse standoff, 47.8V min breakdown, unidirectional. Active production, DO-214AB SMC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Microchip Technology","Type":"Zener","Series":"-","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SMCJ43","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"47.8V","Voltage - Clamping (Max) @ Ipp":"69.4V","Voltage - Reverse Standoff (Typ)":"43V","Current - Peak Pulse (10/1000µs)":"21.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5550","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is SMCJ43AE3/TR13 unidirectional or bidirectional?","answer":"Unidirectional. It has one TVS diode in a single direction, so it clamps positive transients referenced to ground. For AC lines or bidirectional protection, a different part (e.g., a bidirectional SMCJ series variant) would be needed."},{"question":"What is the closest pin-compatible alternative to SMCJ43AE3/TR13 in this Circuit Protection family?","answer":"Within the same SMCJ series, any unidirectional TVS in the DO-214AB (SMC) package with the same footprint is pin-compatible. For a different voltage, choose the appropriate standoff voltage variant (e.g., SMCJ5.0A through SMCJ170A). The TR13 suffix indicates Tape & Reel packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMCJ43AE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMCJ43AE3-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}}