{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ43E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMBJ43E3-TR13","canonicalUrl":"https://icboms.com/microchip/SMBJ43E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMBJ43E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMBJ43E3/TR13, Zener TVS diode, 43V reverse standoff, 600W peak pulse power, single unidirectional channel, DO-214AA (SMB) surface-mount package, Tape & Reel.","salesMarkdown":"## Active Zener TVS for 43 V rail protection It clamps a 7.8 A surge to 76.7 V max, making it a fit for protecting 43 V DC power rails in general-purpose industrial or telecom equipment. ## Clamping voltage and surge current at the rail With a minimum breakdown voltage of 47.8 V and a clamping ceiling of 76.7 V at 7.8 A, this part leaves a 4.8 V margin above the 43 V standoff before the avalanche starts — enough headroom for a regulated 48 V bus with normal ripple. The 600 W peak pulse rating assumes the standard 10/1000 µs double-exponential waveform; shorter pulses (e.g. 8/20 µs) allow higher peak current without exceeding the junction temperature limit of 150°C. ## Active production — order to BOM quantity ## DO-214AA footprint and reflow profile The cathode band marks the unidirectional channel; the opposite end is the anode.","metaTitle":"SMBJ43E3/TR13 Microchip Zener TVS Diode 43V Standoff 600W","metaDescription":"SMBJ43E3/TR13 Zener TVS diode, 43V reverse standoff, 600W peak pulse power, DO-214AA SMB package. 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-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ43","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMBJ (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"47.8V","Voltage - Clamping (Max) @ Ipp":"76.7V","Voltage - Reverse Standoff (Typ)":"43V","Current - Peak Pulse (10/1000µs)":"7.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2850","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f566c62ad8bf6be9ecf452f6999d0b7a.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMBJ43E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMBJ43E3-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}}