{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ40E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMCJ40E3-TR13","canonicalUrl":"https://icboms.com/microchip/SMCJ40E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMCJ40E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMCJ40E3/TR13, Zener TVS Diode, Unidirectional, 1500W Peak Pulse Power, 40V Reverse Standoff, DO-214AB (SMC) Surface Mount Package","salesMarkdown":"## Surge protection for 40V rails The SMCJ40E3/TR13 is a unidirectional Zener TVS diode from Microchip Technology, rated for 1500W peak pulse power at 10/1000µs waveform. It clamps transients on a 40V nominal rail, with a breakdown voltage of 44.4V min and a clamping voltage of 71.4V max at 21A peak pulse current. The 40V reverse standoff voltage means the diode does not conduct at normal operating levels up to 40V, only clamping when a surge pushes the line above the breakdown threshold. ## Clamping voltages and pulse current The 44.4V minimum breakdown ensures the diode starts clamping before the protected circuit's absolute maximum rating is reached. The 71.4V clamping voltage at 21A peak pulse current defines the worst-case voltage the downstream components see during a surge event. For shorter pulses (e.g., 8/20µs), the peak power capability is higher, but the 1500W figure is the conservative baseline for derating calculations. ## Active production and package","metaTitle":"SMCJ40E3/TR13 TVS Diode - Microchip, 1500W, 40V Standoff","metaDescription":"SMCJ40E3/TR13 from Microchip Technology: 1500W peak pulse power, 40V reverse standoff, unidirectional Zener TVS in DO-214AB. Active production, surface mount.","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":"SMCJ40","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)":"44.4V","Voltage - Clamping (Max) @ Ipp":"71.4V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"21A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5550","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power of SMCJ40E3/TR13?","answer":"This is the maximum surge energy it can dissipate in a single pulse without damage."},{"question":"Is SMCJ40E3/TR13 a unidirectional TVS diode?","answer":"Yes, it is a unidirectional Zener TVS diode, meaning it clamps positive transients relative to ground and conducts only in one direction. Use it on DC rails where polarity is fixed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMCJ40E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMCJ40E3-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}}