{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ40CA","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ40CA","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ40CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ40CA","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series bidirectional Zener TVS diode, 40V reverse standoff, 1.5kW peak pulse power, DO-214AA SMB package, AEC-Q101 qualified, Tape & Reel.","salesMarkdown":"## 40V bidirectional TVS for automotive bus protection The 1.5SMBJ40CA: Its 40 V reverse standoff voltage (Vrwm) matches 24 V nominal automotive buses with margin for load-dump transients — the 44.4 V minimum breakdown ensures the device stays off during normal operation and clamps at 64.5 V maximum. AEC-Q101 qualification confirms the part meets automotive-grade stress and reliability requirements: -55°C to 150°C junction temperature range, high-temperature reverse bias (HTRB) endurance, and production part approval process (PPAP) readiness. This is the qualification tier for under-hood and chassis-domain electronic modules. ## Clamping voltage and pulse current at the bench At the 23.3 A peak pulse current (Ipp) the clamping voltage holds at 64.5 V maximum — this is the voltage the downstream IC sees during a surge event. For a 24 V system with a 60 V abs-max transceiver, the 64.5 V clamp sits above the IC's survival limit; a secondary clamp or series impedance is needed if the line sees the full 1.5 kW pulse. The single bidirectional channel protects one signal pair or power rail against both positive and negative transients — no polarity concern during installation. ## Active production and sourcing posture Packaged in Tape & Reel (TR) for SMD pick-and-place. The DO-214AA (SMB) footprint is a standard JEDEC outline shared across the 1.5SMBJ family — no board spin required if swapping within the series for different voltage ratings.","metaTitle":"Bourns 1.5SMBJ40CA TVS Diode, 40V, 1.5kW, AEC-Q101","metaDescription":"Bourns 1.5SMBJ40CA bidirectional Zener TVS diode, 40V reverse standoff, 1.5kW peak pulse, AEC-Q101 qualified. Active production, available 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","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":"$0.3525","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 1.5SMBJ40CA and how do I get a price?","answer":"The 1.5SMBJ40CA is sourced through authorized and independent distribution channels."},{"question":"What is 1.5SMBJ40CA's listed type and grade?","answer":"The device type is Zener, and the grade is Automotive with AEC-Q101 qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ40CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ40CA 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}}