{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ40A-H","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ40A-H","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ40A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ40A-H","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series automotive Zener TVS diode, 1.5SMBJ40A-H, 1500W peak pulse power, 40V reverse standoff, single unidirectional, DO-214AA SMB, AEC-Q101 qualified.","salesMarkdown":"## Protection window and derating The 1.5SMBJ40A-H: The reverse standoff voltage is 40V — the 40V rail sits safely below this, so the diode does not leak appreciably during normal operation. Breakdown occurs between 44.4V min and the clamp voltage of 64.5V max at the rated 23.3A peak pulse current. That 20V window between standoff and clamp is the margin the protected circuit must survive. Peak pulse power is specified at 1500W for a 10/1000µs exponential waveform. The junction temperature rating of 150°C means power derating applies above 25°C ambient — the datasheet derating curve shows the permissible power at elevated temperatures, which matters for sustained high-temperature environments like an engine bay. ## Package and board integration The DO-214AA SMB package is a standard surface-mount footprint compatible with reflow soldering. No power line protection feature is claimed — this is a signal or low-power rail protector, not a mains transient suppressor.","metaTitle":"Bourns 1.5SMBJ40A-H TVS Diode, 1500W, 40V Standoff, AEC-Q101","metaDescription":"Active Bourns 1.5SMBJ40A-H automotive TVS diode, 1500W peak pulse power, 40V reverse standoff, AEC-Q101 qualified, DO-214AA SMB. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Bourns Inc.","Type":"Zener","Grade":"Automotive","Series":"1.5SMBJ","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMBJ","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"64.5V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"23.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2461","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMBJ40A-H?","answer":"The commercial-grade 1.5SMBJ40A (no '-H' suffix) shares the same DO-214AA SMB package, 1500W rating, and protection window but lacks the AEC-Q101 automotive qualification. The '-H' suffix indicates the automotive-grade screening — the raw TVS die and package are the same; the difference is the qualification and traceability for automotive PPAP."},{"question":"How can I order 1.5SMBJ40A-H and check availability?","answer":"This active-production part is sourced through authorized and independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ40A-H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ40A-H 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}}