{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC68CAHR7G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC68CAHR7G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC68CAHR7G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC68CAHR7G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation, Zener-type unidirectional TVS diode, 1.5SMC68CAHR7G, 58.1V standoff, 64.6V min breakdown, 92V clamping, 17A peak pulse, AEC-Q101 automotive, DO-214AB SMC surface mount, -55°C to 150°C junction.","salesMarkdown":"## What the 1.5SMC68CAHR7G clamping ratings mean for the protection circuit With a typical reverse standoff of 58.1V, the part sits below the 64.6V minimum breakdown — normal operation keeps the TVS invisible to the rail, drawing only leakage current until a transient arrives. The 1500W peak pulse power rating is referenced to the 10/1000µs waveform — this is the standard automotive surge test shape in ISO 7637-2. A faster 8/20µs event delivers the same peak current but in a shorter time, which concentrates energy into the package and derates the allowable peak current; confirm the surge waveform your protection standard actually specifies before committing the design. ## AEC-Q101 qualification and the automotive temperature envelope An ECU mounted in the engine bay, seeing 125°C ambient on a heat-soak day, still has headroom before the junction limit is reached. This is the qualification target for under-hood power-train and chassis electronics, not cabin or interior thermal zones. AEC-Q101 compliance means the part passed the automotive council stress test sequence — humidity, temperature cycling, high-temperature reverse bias, and surge life — with statistical sampling and data package requirements. This is not the same qualification as AEC-Q100 for ICs, but it is the relevant standard for discrete semiconductors in automotive safety and powertrain protection circuits. ## DO-214AB SMC package — board-side integration notes The DO-214AB (SMC) is a rectangular, multi-layer ceramic body with a metalized cathode tab — the cathode is the larger pad and connects to the protected rail; the anode lands on the smaller pad and ties to ground. The exposed bottom metallization provides the primary thermal path to the board; a solid copper pad under the device keeps thermal resistance low during the clamping event, when the transient pulse converts to heat inside the die. Supplied on tape and reel — the 1.5SMC series in this package ships in the standard 12 mm carrier width. Check the anode/cathode polarity orientation against your layout before reflow; the package orientation relative to the feed direction is specified in the individual reel labeling and varies by assembly house.","metaTitle":"1.5SMC68CAHR7G TVS Diode, 1500W, 58.1V","metaDescription":"1.5SMC68CAHR7G — unidirectional Zener-type TVS diode, 58.1V standoff, 92V clamping, AEC-Q101 automotive, DO-214AB. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5SMC","Package":"Tape & Reel (TR)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC68","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Voltage - Breakdown (Min)":"64.6V","Voltage - Clamping (Max) @ Ipp":"92V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"17A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC68CAHR7G/alternatives.json"},"ai":{"faq":[{"question":"Is 1.5SMC68CAHR7G unidirectional or bidirectional?","answer":"Unidirectional — it has one bidirectional channel per, meaning it clamps one polarity only. For AC rails or bidirectional protection, a matching bidirectional part from the same 1.5SMC family would be needed, identified by the CA vs CB suffix convention."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC68CAHR7G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5SMC68CAHR7G 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}}