{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ18AQ-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMBJ18AQ-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMBJ18AQ-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMBJ18AQ-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMBJ18AQ-13-F, Automotive Zener TVS, 600W, 18V Standoff, Unidirectional, DO-214AA (SMB), Surface Mount, Tape & Reel.","salesMarkdown":"## AEC-Q101 grade and what it means for your BOM The SMBJ18AQ-13-F carries AEC-Q101 qualification — the automotive discrete semiconductor stress test. That means the part has passed the full suite: temperature cycling, moisture resistance, high-temperature reverse bias, and electrostatic discharge sensitivity per the AEC-Q101 rev E standard. For a Tier-1 or OEM auditor, this is the documentation they expect in a PPAP package. Junction temperature range spans −55°C to +150°C. This covers the under-hood ambient profile with margin — a 125°C engine-bay soak leaves 25°C of junction headroom before derating begins. ## Transient protection envelope for an 18V rail The 18V reverse standoff voltage (VRWM) means the part does not conduct at the normal 12V or 18V supply rail; it starts avalanching at 20V minimum breakdown. Peak pulse power is rated 600W for a 10/1000µs waveform. At that pulse condition the clamping voltage maxes at 29.2V while the peak current hits 20.5A — a 24V-rated downstream IC sees headroom before the clamp fires. The part does not include power line protection — it is designed for signal or low-power supply bus clamping, not AC mains or high-current DC bus. The unidirectional polarity suits a single-rail 12V or 18V automotive bus where the negative terminal is chassis ground. ## Package, mounting, and board-fit DO-214AA (SMB) surface-mount package — the standard JEDEC footprint for this power class. The copper pad area under the cathode tab sets the junction-to-ambient thermal resistance; a 600W pulse at 25°C ambient leaves the junction well within the 150°C limit for the pulse duration. Supplied on tape and reel — the '13-F' suffix denotes the 13-inch reel quantity. Cut tape is also available for prototype or low-volume builds.","metaTitle":"SMBJ18AQ-13-F Diodes Inc Automotive TVS, 600W, 18V, DO-214AA","metaDescription":"AEC-Q101 qualified unidirectional Zener TVS. 600W peak pulse power, 18V standoff, 29.2V clamping. Active production. Sourced against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Grade":"Automotive","Series":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AA, SMB","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ18","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMB","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"20V","Voltage - Clamping (Max) @ Ipp":"29.2V","Voltage - Reverse Standoff (Typ)":"18V","Current - Peak Pulse (10/1000µs)":"20.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0d80e9f6d96844506db23424c1e4ff98.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Diodes Incorporated provide for SMBJ18AQ-13-F?","answer":"The part carries AEC-Q101 automotive qualification documentation. RoHS compliance is standard for Diodes Incorporated surface-mount products. REACH and conflict-minerals declarations are available from the manufacturer upon request. No UL or IEC certification is listed for this specific order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMBJ18AQ-13-F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMBJ18AQ-13-F 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}}