{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91AHR7G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC91AHR7G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91AHR7G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91AHR7G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation Automotive, AEC-Q101, 1.5SMC Zener TVS diode, 1.5SMC91AHR7G, unidirectional 1-channel, 1500W peak pulse, 77.8V reverse standoff, 125V clamping, 12.6A peak pulse, DO-214AB SMC surface mount.","salesMarkdown":"The 1.5SMC91AHR7G: The 77.8 V reverse standoff is the working voltage the line sits behind; the 86.5 V minimum breakdown is where the device begins clamping, and the 125 V maximum clamping voltage is what the downstream circuitry sees at the rated 12.6 A peak current. In a 12 V automotive rail, a 77.8 V standoff gives roughly 6× headroom above the nominal supply — enough to survive cold-crank transients and inductive dump events without conducting continuously. The AEC-Q101 qualification means the die and assembly have passed the automotive stress grade: temperature cycling, humidity bias, and surge testing to the JEDEC JESD22 profile. That is the gate a Tier-1 ECU supplier's procurement spec requires before this part enters a BOM for an under-hood module. Junction temperature limit is 150 °C, which maps to the -55 to 150 °C operating range — the full under-hood ambient band in most markets, with margin left before the thermal shutdown ceiling. ## DO-214AB SMC package for automated line feed Surface-mount DO-214AB (SMC) is the standard automotive TVS footprint — the 2.8 mm body height sits flat for reflow, and the wide cathode band on the sleeve makes optical inspection unambiguous on the AOI station. Tape-and-reel packaging at the supplier device package level is what a kitting lead needs to confirm feeder-ready cut tape versus full reel for a high-volume build run. One unidirectional channel means no bidirectional confusion on the layout — the cathode band connects to the positive rail. Power line protection is flagged No, which is expected for a point-of-load TVS rather than a bus-level suppressor.","metaTitle":"1.5SMC91AHR7G TVS Diode 77.8V 125V Clamping AEC-Q101","metaDescription":"Taiwan Semiconductor 1.5SMC91AHR7G unidirectional TVS Zener, 1500W peak pulse, 77.8V standoff, 125V clamping, AEC-Q101 qualified for automotive.","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":"1.5SMC91","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91AHR7G/alternatives.json"},"ai":{"faq":[{"question":"What series is the 1.5SMC91AHR7G?","answer":"The 1.5SMC91AHR7G belongs to the 1.5SMC series, AEC-Q101 qualified for automotive deployment. The base product number is 1.5SMC91."},{"question":"What type is the 1.5SMC91AHR7G listed as?","answer":"It is classified as a Zener type — a unidirectional Zener-based TVS diode in the DO-214AB SMC package, suitable for clamping transient overvoltage on automotive power rails."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91AHR7G","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/1.5SMC91AHR7G 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}}